Category Archives: Uncategorized

How to install .NET Framework 3.5 on Windows Server 2012 and Windows Server 2012 R2

Symptom: When trying to add the .NET Framework 3.5 feature through the Add Roles and Features Wizard in Server 2012 (R2), you receive the following error:

Do you need to specify an alternate source path?  One or more installation selections are missing source files on the destination server.  The server will try to get missing source files from Windows Update, or from a location that is specified by Group Policy.  You can also click the “Specify an alternate source path” link on this page to provide a valid location for the source files.

NET Framework 3-5 - Do you need to specify an alternate source path

Solution: Complete the steps below to manually install .NET Framework 3.5 from the Server 2012 (R2) installation media.  You can complete this task via command line or via the wizard.

  1. Option 1: Command Line
    1. Insert the Windows Sever 2012 installation media
      Server 2012 - Installation Media
    2. Open up an elevated command prompt
      Elevated Command Prompt
    3. Execute the following command
      1. dism /Online /Enable-Feature /FeatureName:NetFX3 /All /Source:D:\Sources\SxS\ /LimitAccess
        dism netfx3 from disk

        1. Here is a breakdown of the following command:
          /Online                 – Targets the running operating system.
          /Enable-Feature – Enables a specific feature in the image.
          /All                          – Enables all parent features of the specified feature.
          /LimitAccess        – Prevents DISM from contacting WU/WSUS.
  2. Option 2: GUI
    1. Insert the Windows Sever 2012 installation media
      Server 2012 - Installation Media
    2. On the Add Roles and Features wizard, click on Specify an alternate source path
      NET Framework 3-5 - Specify an alternate source path
    3. Enter D:\Sources\SxS\ to point to the Server 2012
      NET Framework 3-5 - Specify an alternate source path - Dialog

Once done installing through the GUI or command prompt, if you navigate back to the Add Roles and Features Wizard, you should see the feature has been successfully installed now.

Add Roles and Features Wizard - Server 2012 R2 - NET Framework 3

Windows 7 – Windows created a temporary paging file on your computer because of a problem that occured with your paging file configuration when you started your computer.

Symptom: Every time you boot your Windows 7 machine or access system settings, you receive the following error:

Windows created a temporary paging file on your computer beause of a problem that occurred with your paging file configuration when you started your computer.  The total paging file size for all disk drives may be somewhat larger than the size you specified.

Windows 7 Error - a problem occured with your paging file configuration

Solution: In this case, the page file had grown too large and corrupted itself.  I was able to resolve the issue by deleting the pagefile.sys file and having Windows recreate it from scratch.  Here are the steps on how to complete this task.

  1. Click Start, right-click Computer, and select Properties
  2. In the left pane, select Advanced system settings
  3. On the Advanced tab, click the Settings button under Performance
  4. On the Advanced tab, click the Change button under Virtual memory
  5. Clear the Automatically manage paging file size for all drives check box and check No paging file
  6. Click Set button next to No paging file
  7. Click OK on all open windows and restart your machine
  8. Open up Windows Explorer
  9. Navigate to the root of your system drive (C:\)
  10. Enable the showing of System Files
    1. On the View menu, click Options
    2. On the View tab, click Show All Files, and then click OK
  11. Delete the pagefile.sys file
  12. Click Start, right-click Computer, and select Properties
  13. In the left pane, select Advanced system settings
  14. On the Advanced tab, click the Settings button under Performance
  15. On the Advanced tab, click the Change button under Virtual memory
  16. Check the Automatically manage paging file size for all drives checkbox and click OK
  17. Restart your machine

Cisco VPN Client on Windows 8 – Secure VPN Connection terminated locally by the Client. Reason 442: Failed to enable Virtual Adapter

Symptom: When trying to use the Cisco VPN client under Windows 8 (and 8.1), you receive the following error.

Secure VPN Connection terminated locally by the Client.
Reason 442: Failed to enable Virtual Adapter.

VPN Client - Reason 442 Failed to enable Virtual Adapter

 

Solution: This is caused by an incompatible Windows 8 registry key.  You can fix this issue by running the powershell command below as an administrator or manually opening up the registry editor and changing the following value.

For 64 bit versions of Windows, use the registry value of Cisco Systems VPN Adapter for 64-bit Windows
For 32 bit versions of Windows, use the registry value of Cisco Systems VPN Adapter

Option 1: Execute the following powershell command:

Set-ItemProperty -Path HKLM:\SYSTEM\CurrentControlSet\Services\CVirtA -Name DisplayName -Value ‘Cisco Systems VPN Adapter for 64-bit Windows
PowerShell - Set CVirtA DisplayName - Cisco VPN

Option 2: Navigate to the following key using the registry editor:

Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\CVirtA

Set the DisplayName value to Cisco Systems VPN Adapter for 64-bit Windows
RegEdit - CVirtA - Cisco VPN - DisplayName

[Tutorial] Upgrading from ADFS 2.0 (Server 2008 R2) to ADFS 3 (Server 2012 R2)

Scenario: You want to upgrade your ADFS 2.0 or 2.1 farm using WID (Windows Internal Database) from Server 2008 R2 to Server 2012 R2.  In this scenario, I have 2 ADFS servers (one as the primary and a second for failover purposes), and 2 ADFS Proxy servers (for load balancing/failover purposes).

NOTE: Prior to writing this article I had only found limited documentation provided by Microsoft on a proper upgrade path for this.  Since then, it apperas that tools had been included with the Server 2012 installation media which will greatly cutdown on the number of steps needed as well as provide as little downtime as possible.  I would highly recommend giving this article a read before proceeding with my article: http://blogs.technet.com/b/askpfeplat/archive/2014/03/31/how-to-build-your-adfs-lab-part4-upgrading-to-server-2012-r2.aspx

My article should still work, but it is definitely not the most efficient way to do an upgrade as pointed out in the technet article above.  My guide essentially goes over cutting over to a completely new ADFS deployment “an upgrade”, side-by-side to your production environment. As pointed out below, you cannot add a Server 2012 R2 machine to a Server 2008 R2 ADFS farm as documented in their earlier help articles.

Tutorial

  1. Login to one of your slave ADFS nodes (secondary server) running Server 2008 R2
  2. Remove the node from your load balancer
  3. Stop the AD FS 2.0 Windows Service
  4. Click Start -> Administrative Tools -> Internet Information Services (IIS) Manager Server 2008 R2 - Start - Administrative Tools - Internet Information Services IIS Manager
  5. Select your server and double click on Server Certificates Internet Information Services IIS Manager - Server Home
  6. Right click on your certificate and select Export… Internet Information Services IIS Manager - Export Certificate
  7. Export the certificate to your desktop, type in a password to protect the exported certificate/private key, and select OK
    Export Certificate Properties
  8. Copy the pfx (exported certificate/private key) to your local machine; we will import this on our new server later.
  9. Disjoin the ADFS machine from the domain
  10. Turn the ADFS machine off and retire it
  11. Create a new Server 2012 R2 machine with the same name and IP as your Server 2008 R2 ADFS machine
  12. While the new ADFS machine is being created, login to one of your ADFS proxy servers
  13. Remove the proxy from your load balancer
  14. Stop the AD FS 2.0 Windows Service
  15. Turn the machine off and retire it
  16. Create a new Server 2012 R2 machine with the same name and IP as your Server 2008 R2 ADFS Proxy machine
  17. While the new ADFS proxy machine is being created, login to your new ADFS Server 2012 R2 machine.
  18. Open up Server Manage and select Manage -> Add Roles and Features Server 2012 - Manage - Add Roles and Features
  19. On the Before You Begin screen, click Next > Add Roles and Features Wizard - Before you begin
  20. Select Role-based or feature-based installation and click Next > Add Roles and Features Wizard - Select installation type
  21. Select your server and click Next > Add Roles and Features Wizard - Select destination server
  22. Check Active Directory Federation Services and click Next > Add Roles and Features Wizard - Server Roles - Active Directory Federation Services
  23. Click Next > on Features Add Roles and Features Wizard - Features - Default
  24. Click Next > on AD FS Add Roles and Features Wizard - AD FS
  25. Click Install Add Roles and Features Wizard - Confirmation - Active Directory Federation Services
  26. Click on the Configure the federation service on this server. link once the installation has completed successfully. Add Roles and Features Wizard - Results - Configure the federation service on this server
  27. Check Create the first federation server in a federation server farm on the Welcome screen for the Active Directory Federation Services Configuration Wizard and then click Next > Active Directory Federation Services Configuration Wizard - Welcome
    1. Please see my notes below on why we did not check Create the first federation server in a federation server farm.
  28. Click Next > on the Connect to AD DS step
    Active-Directory-Federation-Services-Configuration-Wizard-Connect-to-AD-DS
  29. Copy the .pfx file we exported from the ADFS server earlier to the new ADFS server
  30. On the Specify Service Properties screen, click on the Import… button Active Directory Federation Services Configuration Wizard - Specify Service Properties - Import
  31. Select your certificate and click Open Select Certificate
  32. Type in the password to the exported certificate and click OK Enter certificate password
  33. Type in a Federation Service Display Name that will be shown to your users when they login to the ADFS service (this can be anything), and click Next > Active Directory Federation Services Configuration Wizard - Specify Service Properties - Federation Service Display Name
  34. On the Specify Service Account screen, click the Select… button Active Directory Federation Services Configuration Wizard - Specify Service Properties - Use an existing domain user account or group Management Service Account
  35. Type in the name of your service account you wish to use for ADFS, click the Check Names button to verify you don’t have any typos, and click OK Active Directory Federation Services Configuration Wizard - Specify Service Properties - Select User or Service Account
  36. Type in the password for the ADFS service account and click Next > Active Directory Federation Services Configuration Wizard - Specify Service Properties - Use an existing domain user account or group Management Service Account - Username password
  37. Click Next > on the Specify Configuration Database Active Directory Federation Services Configuration Wizard - Specify Database - Create a database on this server using Windows Internal Database
    1. Note: I choose to continue to use WID, you can switch to SQL if you would like now, however that is outside of the scope of this document.
  38. Click Next > on the Review Options screen Active Directory Federation Services Configuration Wizard - Review Options
  39. Click the Configure button once all the prerequsite checks have passed successfully Active Directory Federation Services Configuration Wizard - Pre-requisite Checks
  40. Click Close once the server has successfully been configured Active Directory Federation Services Configuration Wizard - Results
  41. Open up Internet Explorer on the new ADFS machine and navigate to https://localhost/adfs/ls/IdpInitiatedSignon.aspx to ensure the service is properly running AD FS 3 Test
    1. Note: you should receive an invalid ssl certificate error; that is OK, we will switch the DNS records over once we are ready to transition from our old farm to the new one.
  42. Next, login to your Server 2008 R2 primary ADFS server and recreate the federation trusts on the new Server 2012 R2 primary ADFS server
    1. Start -> Administrative Tools -> AD FS 2.0 Management; select Trust Relationships -> Relying Party Trusts
    2. Recreate all the rules/trusts from your original ADFS server on your new Server 2012 R2 ADFS machine
      1. Note: If you are recreating rules for Office 365, you will need to wait until you switch over our new Server 2012 R2 environment to production.  The reason is when you setup the new ADFS instance, some of the certificates will change causing a certificate mismatch/preventing your users from logging in.  You will need to make sure you follow the following steps when resetting up the Office 365 trust to ensure your users don’t receive “Error 80041317”: http://support.microsoft.com/kb/2647020/en-us
  43. Login to your new ADFS Proxy server
  44. Import your SSL cerficate from your old ADFS server (from step 8) onto the server’s Local Machine certificate store
    1. Right click on Start and select Run
      Server 2012 - Start - Run
    2. Type MMC and click OK
      Server 2012 - Run - mmc
    3. Click File -> Add/Remove Snap-in…
      Server 2012 - mmc - Add Remove Snap-In
    4. Select Certificates and click Add > Add or Remote Snap-ins - Certificates
    5. Select Computer account and click Next > Certificates snap-in - Computer Account
    6. Select Finish Certificates snap-in - Select Computer
    7. Click OK on the Add or Remove Snap-ins screen Add or Remove Snap-ins - Certificates - Local Computer
    8. Expand Certificates (Local Computer), select Personal, and right click, select All Tasks -> Import… Server 2012 - Certificates (Local Computer) - Personal - Import
    9. Click Next on the Certificate Import Wizard Certificate Import Wizard - Welcome
    10. Click the Browse… button Certificate Import Wizard - Browse
    11. Select your certificate and click Open Select Certificate
      1. Note: You may need to click on the dropdown box in the bottom right and select All Files for your pfx file to show up.
    12. Click Next on the File to Import screen Certificate Import Wizard - File to Import
    13. Type in the password to the pfx file, check Mark this key as exportable, and click Next Certificate Import Wizard - Private key protection
    14. Ensure Place all certificates in the following store shows Personal and click Next Certificate Import Wizard - Certificate Store
    15. Click Finish Certificate Import Wizard - Completing the Certificate Import Wizard
    16. Click OK on the Certificate Import Wizard successful dialog boxCertificate Import Wizard - Successful
  45. Edit the hosts file to point your DNS record to your new ADFS server
    1. Open Notepad as an Administrator Server 2012 - Notepad - Administrator
    2. Open the following file: C:\Windows\System32\drivers\etc\hosts Server 2012 - Hosts file
    3. Add in your DNS entry and point to your new ADFS server hosts file - adfs manual entry
    4. Save the file
      1. Note: We will come back to this later and update it to point to our load balancer once we switch over everything.  For now, this lets us test our new deployment while switching things over.
  46. Open up Server Manager
    Server 2012 R2 - Server Manager
  47. Click Manage -> Add Roles and Features
    Server 2012 - Manage - Add Roles and Features
  48. Click Next > on the Before you begin screen Add Roles and Features Wizard - Before you begin
  49. Select Role-based or feature based installation and click Next > Add Roles and Features Wizard - Select installation type
  50. Select your server and click Next > Add Roles and Features Wizard - Select destination server
  51. Check Remote Access on the Server Roles screen Add Roles and Features Wizard - Remote Access
  52. Click Next > on the Features screen Add Roles and Features Wizard - Features - Default
  53. Click Next > on the Remote Access screen
  54. Check Web Application Proxy
  55. ClickAdd Features on the Add Roles and Features Wizard dialog boxAdd Roles and Features Wizard - Web Application Proxy
  56. Click Next > on the Roles Services screen Add Roles and Features Wizard - Role Services - Web Application Proxy
  57. Click Install on the Confirmation screen Add Roles and Features Wizard - Confirmation - Web Application Proxy
  58. Click on the Open the Web Application Proxy Wizard link once the installation succeeds Add Roles and Features Wizard - Confirmation - Web Application Proxy - Open the Web Application Proxy Wizard
  59. Click Next > on the Welcome screen Web Application Proxy Configuration Wizard - Welcome
  60. Type in the FQDN to your ADFS server, the credentials of an account with local admin privileges, and then click Next >Web-Application-Proxy-Configuration-Wizard-Federation-Server
  61. Select your certificate on the AD FS Proxy Certificate screen and click Next >
    Web-Application-Proxy-Configuration-Wizard-AD-FS-Proxy-Certificate
  62. Click Configure on the Confirmation screen Web Application Proxy Configuration Wizard - Confirmation
  63. Click Close once the Web Application Proxy has been successfully configured.Web-Application-Proxy-Configuration-Wizard-Results
  64. After you click close a new window should open.  On the Remote Access Management Console, select Publish
    1. Note: This step only needs to be done once.  It will replicate to all other proxy servers when you set those up at a later time.
      Remote Access Management Console - Publish
  65. Click Next > on the Welcome screen
    Publish New Application Wizard - Welcome
  66. Select Pass-through and click Next >
    Publish New Application Wizard - Preauthentication
  67. Enter in a name, external URL, and internal URL for your federated server (mine were both the same since I use split-dns).  Click Next >
    Publish New Application Wizard - Publishing Settings
  68. Click Close
    Publish New Application Wizard - Results
  69. Add the new Server 2012 R2 ADFS machine to your load balancer and remove your Server 2008 R2 machine.
  70. Add the new Server 2012 R2 ADFS Proxy machine to your load balancer and remove your Server 2008 R2 proxy machine.
  71. Update the hosts file on your Server 2012 R2 proxy machine to point to your load balanced Server 2012 R2 ADFS environment
  72. Retire your Server 2008 R2 ADFS environment
    1. Disjoin the ADFS proxy server from the domain and recycle the machine
    2. Open up PowerShell as an Administrator
      Elevated Powershell
    3. Execute the following commands:
      1. Add-PsSnapin Microsoft.Adfs.Powershell
        Get-AdfsProperties
        get-adfsproperties certificatesharingcontainer
    4. Stop the service on your Server 2008 R2 ADFS machine running the old ADFS farm
    5. Execute the following command to remove the ADFS Farm info from AD (substituting in the information from the Get-AdfsProperties command):
      1. $delme = New-Object System.DirectoryServices.DirectoryEntry(“LDAP://CN=484e24a8-5726-4186-8e24-825b77920798,CN=ADFS,CN=Microsoft,CN=Program Data,DC=mydomain,DC=local“)
        $delme.DeleteTree()
        PowerShell DeleteTree
    6. Disjoin the ADFS machine from the domain and recycle the machine
  73. Add a new Server 2012 R2 machine and WAP machine to your new ADFS environment for redudnancy (same steps as above, except in Step 27, you will select Add a federation server to federation server farm

Notes: Here is the upgrade compatibility matrix for upgrading ADFS from a specific version to Server 2012: http://technet.microsoft.com/en-us/library/jj647765.aspx

Why did I not check Add a federation server to a federation server farm on the Welcome screen for the Active Directory Federation Services Configuration Wizard?

The reason behind not checking this is I believe Microsoft has a bug in their discovery tool in adding another machine to a farm running ADFS 3.0.  When adding a Server 2012 R2 machine to a farm with only Server 2008 R2 machines running ADFS 2.0, you will receive the following error:

The primary federation server was contacted successfully, but the configuration data was not valid. Ensure that the primary federation server is running Windows Server 2012 R2 or later. Unable to retrieve configuration from the primary server. The primary federation server was contacted successfully, but the configuration data was not valid. Ensure that the primary federation server is running Windows Server 2012 R2 or later. Prerequisites Check Completed One or more prerequisites failed.  Please fix these issues and click “Rerun prerequisites check” The primary federation server was contacted successfully, but the configuration data was not valid. Ensure that the primary federation server is running Windows Server 2012 R2 or later

Symptom: You receive the following error while setting up the WAP (proxy) server:

An error occurred when attempting to establish a trust relationship with the federation service. Error: Not Found An error occurred when attempting to establish a trust relationship with the federation service Error Not Found

Resolution: Make sure you update the DNS records of your ADFS deployment to point to your new ADFS server.  Both the ADFS proxy and ADFS server must be running the same OS version (in this case, Server 2012 R2).

Error: DHCP: Credentials for DNS update should be configured if secure dynamic DNS update is enabled and the domain controller is on the same host as the DHCP server.

Symptom: In Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 you receive the following Warning when running the Microsoft Best Practices Analyzer.

Severity: Error
DHCP: Credentials for DNS update should be configured if secure dynamic DNS update is enabled and the domain controller is on the same host as the DHCP server.
BPA - Error DHCP Credentials for DNS update should be configured if secure dynamic DNS update is enabled and the domain controller is on the same host as the DHCP server

What does this mean?

If you have the DHCP service installed on your domain controller without a service account configured, by default, DNS registrations from DHCP clients will be prevented from being registered and will log event 1056 in event viewer.

Solution: Complete the following steps below to change the credentials of the service account used for DHCP.

  1. Before beginning, make sure you have a service account you can use to set the DHCP Server to run as.  This account should be a domain account (not a local account) and should not have any fancy privileges (standard user account, not an administrator).
  2. Open up Server Manager
    Server 2012 R2 - Server Manager
  3. Click Tools and select DHCP
    Server Manager - Tools - DHCP
  4. Expand your DHCP server and right click on the IPv4 service and select Properties
    DHCP - IPv4 - Properties
  5. Select the Advanced tab and then click the Credentials… button
    DHCP - IPv4 Properties - Advanced - Credentials...
  6. Enter in the User name, domain, password, and confirmation password to the user and click OK
    DNS dynamic update credentials
  7. Click OK on the IPv4 Properties screen
  8. Repeat this step on each of the DHCP servers in your domain.  It is recommended to use the same service account on each of the machines.

Notes: The official KB article from Microsoft on this subject can be found here: http://technet.microsoft.com/en-us/library/ee941181(v=ws.10).aspx
Another very good Technet article written by karammasri on this subject can be found here: http://blogs.technet.com/b/stdqry/archive/2012/04/03/dhcp-server-in-dcs-and-dns-registrations.aspx

Warning: Short file name creation should be disabled

Symptom: In Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 you receive the following Warning when running the Microsoft Best Practices Analyzer.

Severity: Warning
Short file name creation should be disabled
Short file name creation should be disabled

What is short file name creation?

Back in the good ol’ days of windows, filenames were limited to a format of 8 characters for the name, a period, and then 3 characters for a file extension.  The filename was limited by FAT formatted partitions.  Unless running very old legacy applications, this can be safely turned off to help with performance.

Solution: Complete the following steps below to disable short file name creation.

  1. Open up an elevated powershell console
    Server 2012 - PowerShell - Run as Administrator
  2. Execute the following command
    1. Set-ItemProperty -Path “HKLM:\SYSTEM\CurrentControlSet\Control\FileSystem” -Name NtfsDisable8dot3NameCreation -Value 1
      Set-ItemProperty HKLM-SYSTEM-CurrentControlSet-Control-FileSystem
  3. Optionally, you can open up registry viewer and confirm the value has been changed.
    Registry Editor - HKLM-SYSTEM-CurrentControlSet-Control-FileSystem

Notes: An official KB article from Microsoft on this topic can be found here: http://technet.microsoft.com/en-us/library/ff633453(v=ws.10).aspx

Warning: Enable Receive Side Scaling (RSS) on a network adapter

Symptom: In Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, and Windows Server 2012 R2 you receive the following Warning when running the Microsoft Best Practices Analyzer.

Severity: Warning
Enable Receive Side Scaling (RSS) on a network adapter
Server Manager - Best Practices Analyzer - Warning - Enable Receive Side Scaling RSS on a network adapter

What is Receive Side Scaling (RSS)?

Per Microsoft’s website, Virtual Receive-side scaling (RSS) is a feature in Windows Server® 2012 R2 that allows the load from a virtual network adapter to be distributed across multiple virtual processors in a virtual machine.

Solution: Complete the following steps below to enable Receive-side scaling (RSS) on a network adapter.

  1. Open up an elevated command prompt
    Elevated Command Prompt
  2. Execute the following command
    1. netsh interface tcp set global rss=enabled
      command prompt - netsh interface tcp set global rss enabled
  3. At this point, Receive Side Scaling should be enabled.  Optionally, you can verify this in the Windows GUI.  Follow the steps below for verification.
    1. Execute the following command to open up device manager
      1. DEVMGMT.msc
        command prompt - devmgmt
    2. Expand Network adapters, right click on your adapter and select Properties
      device manager - network adapters - properties
    3. Select the Advanced tab and find Receive Side Scaling.  Set this to Enabled if it isn’t already.
      Network Adapter Properties - Advanced - Receive Side Scaling

Notes:
An official KB article on this issue can be found here: http://technet.microsoft.com/en-us/library/gg162712(v=ws.10).aspx
An official KB article about Receive Side Scaling can be found here: http://technet.microsoft.com/en-us/library/dn383582.aspx

Warning: All OUs in this domain should be protected from accidental deletion

Symptom: When running the Microsoft Best Practices Analyzer on Server 2008 – Server 2012 R2, you receive the following warning:

Severity: Warning
All OUs in this domain should be protected from accidental deletion
Server Manager - Best Practices Analyzer - Warning - All OUs in this domain should be protected from accidental deletion

What is accidental deletion?

By protecting all OUs in the domain from accidental deletion, you will prevent yourself from being able to simply right click and delete an organizational unit in Active Directory Users and Groups.  By enabling accidental deletion on all OUs, you will have to take an extra step to delete the OU (which can be nice, as you don’t want to accidentally delete an OU with important users or groups in it).

Solution:

Complete the steps below to enable protect all OUs in the domain from accidental deletion.

  1. Open up Server Manager
    Server 2012 R2 - Server Manager
  2. Click Tools and select Active Directory Module for Windows PowerShell
    Server Manager - Tools - Active Directory Module for Windows PowerShell
  3. Optional Step: Execute the following command to see which OUs are not currently protected from accidental deletion
    1. Get-ADOrganizationalUnit -filter * -Properties ProtectedFromAccidentalDeletion | where {$_.ProtectedFromAccidentalDeletion -eq $false} | ft DistinguishedNameList unprotected OUs from Accidental Deletion PowerShell
  4. Execute the following command to protect all OUs in the domain from accidental deletion
    1. Get-ADOrganizationalUnit -filter * -Properties ProtectedFromAccidentalDeletion | where {$_.ProtectedFromAccidentalDeletion -eq $false} | Set-ADOrganizationalUnit -ProtectedFromAccidentalDeletion $trueProtect OUs from Accidental Deletion PowerShell

Notes: An official KB article from Microsoft on this subject can be found here: http://technet.microsoft.com/en-us/library/dd723677(v=ws.10).aspx

Warning: DNS: The DNS server should have scavenging enabled

Symptom: When running the Microsoft Best Practice Analyzer on Windows Server 2008, Windows Server 2008 R2, Windows Server 2012, or Windows Server 2012 R2, you receive the following recommendation/warning:

Severity: Warning
DNS: The DNS server should have scavenging enabled.
Server 2012 - BPA - The DNS server should have scavenging enabled

What is DNS scavenging?

Per Microsoft: Scavenging automates the deletion of old records. When scavenging is disabled, these records must be deleted manually or the size of the DNS database can become large and have an adverse effect on performance.

Solution: Complete the following steps below to enable scavenging of DNS records.

  1. Click Start (right click Start if in Server 2012), and select Run
    Server 2012 - Run
  2. Type dnsmgmt.msc and click OK
    Run - dnsmgmt-msc
  3. Right click on your server and select Properties
    DNS Manager - Properties
  4. Click on the Advanced tab and check Enable automatic scavenging of stale records
    DNS Manager - Properties - Advanced - Enable automatic scavenging of stale records
  5.  Click OK

Notes: The official KB article from Microsoft can be found here: http://technet.microsoft.com/en-us/library/ff807390(v=ws.10).aspx

Enabling SSL on Windows Server Update Services (WSUS)

Here are the steps to configure SSL on your servers running the Windows Server Update Services.  This guide was written using Server 2012 R2, however it should be the same steps for Windows Server 2008 R2 as well.  This guide also assumes you have a working instance of WSUS installed and configured, using default ports.

  1. Login to your WSUS server
  2. Open up Server Manager
    Server 2012 R2 - Server Manager
  3. Select Tools -> Internet Information Services (IIS) Manager
    Server Manager - Tools - Internet Information Services IIS Manager
  4. Generate a SSL certificate
    1. Click on your Server and select Server Certificates
      Internet Information Services (IIS) Manager - Server Certificates
    2. If you have your own PKI environment, follow these steps, if not, jump to step three
      1. Click Create Domain Certificate on the right side
        Internet Information Services (IIS) Manager - Server Certificates - Create Domain Certificate
      2. Fill in the requested information on the Distinguished Name Properties page and click Next
        Internet Information Services (IIS) Manager - Server Certificates - Distinguished Name Properties
      3. Select your certificate authority and enter a friendly name (this can be anything), and then click Finish
      4. Internet Information Services (IIS) Manager - Server Certificates - Create Domain Certificate - Online Certification Authority
    3. If you need to submit a certificate request to an external certificate authority like Goaddy, Verisgn, Comodo; follow these steps
      1. Click Create Certificate Request on the right side
        Internet Information Services (IIS) Manager - Server Certificates - Create Certificate Request
      2. Fill out the Distinguished Name Properties and click Next
        Internet Information Services (IIS) Manager - Server Certificates - Request Certificate - Distinguished Name Properties
      3. Change the Bit length to 2048 and click Next
        Internet Information Services (IIS) Manager - Server Certificates - Request Certificate - Crytographic Service Provider Properties
      4. Select a location on where to place the CSR file that will be generated by the wizard and click Finish
        Internet Information Services (IIS) Manager - Server Certificates - Request Certificate - File Name
      5. At this point, send the request to your certificate authority (like GoDaddy, Verisign, or your own internal certificate authority). You should receive back a .cer file once the claim has been fulfilled.
      6. Click on Complete Certificate Request on the right side
        Internet Information Services (IIS) Manager - Server Certificates - Complete Certificate Request
      7. Select the .cer file that your public certificate authority provided you, type in a friendly name (this can be anything), select Web Hosting for the certificate store, and click OK
        Internet Information Services (IIS) Manager - Server Certificates - Request Certificate - Specify Certificate Authority Response
  5. Next, we need to bind the SSL certificate to your network adapter.
    1. Expand your server, expand Sites, and select WSUS Administration
      IIS - Sites - WSUS Administration
    2. Select Bindings… on the right side
      IIS - Bindings
    3. Select the https site and hit the Edit… button
      Site Bindings - Port 8531
    4. Select https for the type, select the SSL certificate you created above, and click OK
      IIS - Edit Site Binding - WSUS
    5. Click Close on the Site Bindings window
      IIS - Site Bindings - https
  6. Next, we need to enforce SSL encryption on the following virtual roots
    • ApiRemoting30
    • ClientWebService
    • DSSAuthWebService
    • ServerSyncWebService
    • SimpleAuthWebService

    1. Expand WSUS Administration and foreach of the directories above, complete the following steps
      1. Select the virtual site
        IIS - WSUS Administration
      2. Double click on SSL Settings
        IIS - WSUS Administration - SSL Settings
      3. Check Require SSL and leave client certificates to ignore
        IIS - WSUS Administration - SSL Settings - Require SSL
      4. Click Apply in the top right corner
        IIS - SSL Settings - Apply
  7. Next, we need to execute a command to tell WSUS to use ssl
    1. Open up an elevated command prompt
      Server 2012 - Administrative Command Prompt
    2. Navigate to your WSUS installation folder
      1. cd “c:\Program Files\Update Services\Tools”
        cmd - program files - update services - tools
    3. Execute the following command (replace your server with the correct FQDN)
      1. WSUSUtil.exe configuressl myserver.mydomain.local
        wsusutil configuressl
  8. Restart the WSUS server to make sure all changes take effect.  You should be able to bring up the WSUS management console if all went well.
  9. Configure your clients to connect via SSL to the WSUS server via Group Policy
    1. Login to your domain controller
    2. Open up Server Manager
      Server 2012 R2 - Server Manager
    3. Open up Group Policy Management
      Server Manager - Tools - Group Policy Management
    4. Right click on the policy you want to edit and select Edit
      Edit GPO
    5. Expand Computer Configuration -> Polices -> Administrative Templates -> Windows Components -> Windows Update
    6. Double click on Specify intranet Microsoft update service location
      Specify intranet Microsoft update service location
    7. Change the intranet update service url to https and specify port 8531 and then click Apply.
      Specify intranet Microsoft update service location - options

That should do it!  Try doing a gpupdate /force on your local machine and the check for windows updates.  If windows successfully completes checking for updates, you should be good to go! 🙂

Notes: Official documentation from Microsoft in regards to using SSL and WSUS can be found here: http://technet.microsoft.com/en-us/library/hh852346.aspx#consswsus