My SBS 2011 Standard server cannot install updated definitions for Windows Defender (KB915597). Windows Update fails with Error Code 8050A005 ("unknown error"). This problem only affects the server.
I am running Symantec Endpoint Protection so I don't think I need Windows Defender. But I can't figure out how to uninstall or permanently disable Windows Defender on the server or how to un-deploy this update to the server. Windows Updates are managed by Windows Server Update Services.
I tried manually downloading and installing the standalone update package but I didn't see a download for my operating system.
I appreciate your help.