Fix Windows Update Black Screen After Restart
After installing a Windows update and restarting, a black screen (with or without a cursor) can b...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Windows Search Auto Start Not Working After Update
After a Windows update, you might notice that the search bar doesn't open or respond when you cli...
How to Fix Windows Update Stuck on Downloading
You click Check for updates, and the progress bar sits at some percentage for hours. Maybe it say...
Fix Windows Defender Token Expired After Update
After a Windows update, you might see an error that Windows Defender's security token has expired...
Fix Windows Activation Failed Due to Product Key Mismatch
You see "Windows activation failed due to product key mismatch" after entering a key or during an...
Fix Windows Defender Path Not Found Error 0x80070643
When you try to update or run Windows Defender, you might see error 0x80070643 with a message lik...
Topic paths
Quick titles
How to Fix Security Token Expired Permissions Denied in WindowsTroubleshoot Windows Defender Service FailureHow to Fix Windows Update Permission Denied ErrorsWindows Defender Can't Reach Microsoft Server TroubleshootingWindows Search Not Showing Results: Quick FixesBackup and Restore Windows Activation: Step-by-Step GuideWindows 10 DNS Error on Update: Causes and FixesTroubleshoot Windows Update Like an IT Pro