Fix Windows Defender 404 Not Found After Update
After installing a recent Windows update, some users find that Windows Defender is missing or sho...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix OneDrive 'Permission Denied' When Accessing Folders
You try to open or sync a folder in OneDrive and get a "Permission Denied" or "Access Denied" mes...
How to Fix DISM Restore Health Error 0x80073712
When running DISM /Online /Cleanup-Image /RestoreHealth, you may see error 0x8007371...
Fix PowerShell Execution Policy Restricted via Registry
When you try to run a PowerShell script and see an error like … cannot be loaded because ru...
Fix Windows Terminal Authentication Failure After Update
After a Windows update, you may see authentication failures in Windows Terminal – prompts for cre...
How to Fix Windows Activation Proxy Error
If you see "We can't activate Windows on this device because of a proxy error" or similar, your s...
Topic paths
Quick titles
Windows Update Dependency Conflict: Step-by-Step FixChrome Profile Corrupted: Step-by-Step Fix GuideFix Windows Security Not Starting on BootHow to Troubleshoot OneDrive Sync ErrorsNew to Chrome Profiles? Start HereHow to Break a Windows Update Loading LoopWindows Activation Command Prompt Access Denied FixHow to Fix BitLocker Recovery Key Rejected