How to Resolve Error Code 0x800f0926: Windows Couldn't Install Updates on Windows Server 2012 R2

Here are some steps you can follow to resolve the error code 0x800f0926:

1. Verify your internet connection: Ensure your internet connection is stable and fast enough to download and install updates.
2. Use the Windows Update troubleshooter: Navigate to Control Panel > Troubleshooting > System and Security > Fix problems with Windows Update. Follow the instructions to run the troubleshooter and see if it can detect and fix the problem.
3. Turn off antivirus software: Occasionally, antivirus programs can block updates. Temporarily disable your antivirus software to see if this resolves the issue.
4. Inspect system files for corruption: Open Command Prompt as an administrator and run the command 'sfc /scannow' to check for and repair any corrupted system files.
5. Download and install the update manually: If other methods fail, manually download and install the update from the Microsoft Update Catalog website. Ensure you select the appropriate update for your version of Windows Server 2012 R2.