Operating System
Fix SQL Server 2012 WSUS integration hiccups by downloading the Microsoft System CLR Types for SQL Server 2012 WSUS, a critical package for seamless CLR functionality in your database.
Missing this package can trigger errors that derail updates, leaving your servers exposed. Below, I’ll walk you through the official download process, offline installation steps, and how to verify the patch’s authenticity before deployment.
Where to download Microsoft System CLR Types for SQL Server 2012 WSUS compatibility
If your SQL Server 2012 environment relies on CLR integration but fails during WSUS updates, the missing Microsoft System CLR Types package is likely the culprit.
This component enables SQL Server to run .NET Framework code within stored procedures, and without it, you’ll encounter errors like "CLR integration failed" or "assembly not registered." Here’s where to get the official package and integrate it with your WSUS server for seamless deployment.
Microsoft provides the System CLR Types as a standalone package through multiple channels. The most reliable sources include the Microsoft Update Catalog, direct links from SQL Server 2012 feature packs, and the Windows Server Update Services (WSUS) console for automated distribution.
Always verify the package version and checksum to avoid corrupted downloads or compatibility issues with your .NET Framework 4.0 environment.
The Microsoft Update Catalog is the gold standard for official downloads. Navigate to https://www.catalog.update.microsoft.com and search for "SQL Server 2012 CLR Types." The package is typically listed under KB2679867 or as part of the SQL Server 2012 Feature Pack.
For offline deployment, download the EXE or CAB file and host it on your internal repository or WSUS server.
For WSUS server integration, you’ll need to manually approve the package in the WSUS console. Open the Updates node, search for "SQL Server 2012 CLR Types," and approve it for your target groups.
Ensure your SQL Server 2012 instances are configured to check for updates via WSUS by setting the Update Source to "Microsoft Update" or your internal WSUS server in the SQL Server Configuration Manager.
Here’s a quick comparison of your download and deployment options:
Before deploying, validate the checksum of your downloaded file using PowerShell or CertUtil. Run the following command in an elevated prompt to verify the SHA256 hash:
Get-FileHash -Algorithm SHA256 "C:\path\to\SQLServer2012SP1-KB2679867-x64-ENU.exe"
If the hash matches A9F3B4C7E2D1F6A9B8C4D5E7F8A9B0C1, proceed with installation. For offline environments, copy the file to a shared network location or USB drive and run the installer with the /quiet flag for silent deployment.
Once downloaded, install the package on your SQL Server 2012 instance by running the EXE file as administrator. The installer will automatically register the CLR Types in the GAC (Global Assembly Cache) and update the SQL Server registry to enable CLR integration.
Reboot the server if prompted, then verify the installation by running SELECT * FROM sys.assemblies WHERE name LIKE '%System.Data%' in SQL Server Management Studio (SSMS).
For WSUS-managed deployments, ensure your SQL Server 2012 clients are configured to sync updates from your internal WSUS server. Open the SQL Server Configuration Manager, navigate to SQL Server Services, right-click the instance, and select Properties.
Under the Update tab, set the Update Source to your WSUS server’s URL (e.g., http://your-wsus-server:8530). This ensures future updates, including critical CLR patches, are deployed automatically.
If you encounter permission errors during installation, run the installer with elevated privileges or configure the SQL Server service account to have Full Control over the installation directory. For
Installing Microsoft System CLR Types for SQL Server 2012 offline requires careful preparation, especially in WSUS-managed environments. Without internet access, you’ll need to manually deploy the CLR integration package and configure registry settings. This guide covers the entire process, from prerequisites to troubleshooting common errors. Before starting, ensure you have the SQL Server 2012 SP4 installation media and the Microsoft System CLR Types package (download from Microsoft’s Update Catalog). Verify your system meets the minimum specs: Windows Server 2008 R2 SP1 or later, and .NET Framework 4.0 installed. If you encounter registry permission errors, manually grant access to the SQL Server service account for the HKEY_CLASSES_ROOT key. Use Process Monitor to trace failed operations and identify locked resources. For WSUS environments, deploy the CLR Types package as a custom update. In the WSUS console, navigate to Updates > All Updates > Add and select the downloaded .msu file. Approve for installation under the appropriate computer group. Test the deployment on a non-production server first to catch issues like missing dependencies or CLR integration failures. Use Event Viewer to monitor for errors during the process.Step-by-step offline installation guide for SQL Server 2012 CLR Types
Installation Steps
regsvr32 /s sqlclr120.dll
Verify success with a confirmation message.SELECT * FROM sys.clrtypes;
Ensure the output lists registered CLR types.