Checklist: Windows Update Service Not Running in Services.msc
When you open Services.msc and see that the Windows Update service (wuauserv) is not running, or ...
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Troubleshoot Windows Activation ProblemsFix Windows Update Hanging on Checking for UpdatesWindows 10/11: How to Control Update InstallationResolve Windows Search Version MismatchResolve PowerShell Certificate Authentication FailureResolve Chrome Extension Permission Errors on macOSResolve Port Already Allocated Error in Windows 10 StoreClear Browser Cache for Chrome 504 Error