Fix Windows Security Authentication Failed Event ID 4625
If you're seeing Event ID 4625 in Windows Security logs, it means an account failed to log on. Th...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Windows Defender Update Error 0x80070643
You try to update Windows Defender and see error 0x80070643. This usually means a Windows Update ...
Fix Windows Update Error 0x80070020: File Locked
You try to install Windows updates but get error 0x80070020. This usually means another program o...
Fix 'Threat Service Stopped' in Windows 10 Defender
If you see a yellow warning in Windows Security that says "Threat service has stopped" or "Restar...
Fix Windows Search Not Finding External Hard Drive Files
You connect an external hard drive, open File Explorer, and see your files. But when you search f...
Slow Windows Activation After Upgrade: Practical Fixes
After upgrading Windows, you may notice that activation takes unusually long—sometimes several mi...
Issue queue
SitemapFix Windows Update Error 0x80070002 (Dependency Conflict)
Chrome Connection Refused: Firewall Block Fix
Shared Mailbox Migration Troubleshooting for Outlook
How to Set Up Guest Access in Microsoft Teams
How to Fix 502 Bad Gateway in Task Scheduler
Fix Windows Defender Network Error in Configuration Tool
How to Fix Remote Desktop Network Error 0x204
How to Get Microsoft Store Offline Installer
Fix OneDrive Version Conflicts Between Devices
SSH Works but Git Clone Fails Publickey
Windows Update Migration Stuck? Disk Space Fix
How to Fix Windows Update Path Not Found on Windows 11
Chrome Connection Refused: Firewall Block Fix
Shared Mailbox Migration Troubleshooting for Outlook
How to Set Up Guest Access in Microsoft Teams
How to Fix 502 Bad Gateway in Task Scheduler
Fix Windows Defender Network Error in Configuration Tool
How to Fix Remote Desktop Network Error 0x204
How to Get Microsoft Store Offline Installer
Fix OneDrive Version Conflicts Between Devices
SSH Works but Git Clone Fails Publickey
Windows Update Migration Stuck? Disk Space Fix
How to Fix Windows Update Path Not Found on Windows 11