Windows Security Troubleshooting Guide
Windows Security (formerly Windows Defender) usually runs quietly in the background, but sometime...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Windows Security Error 0x80073b01: App Install Blocked
When you try to install a Windows app from the Microsoft Store, you might see error code 0x80073b...
Fix Windows Defender Version Mismatch Not Updating
If Windows Defender shows a version mismatch and refuses to update, you might see errors like "Yo...
How to Fix Windows Update Invalid Configuration Registry Error
You may see an error like 'Windows Update encountered an error – 0x80070002' or 'Invalid configur...
Fixing Task Scheduler Version Mismatch Configuration Errors
You see a "version mismatch" error when opening a scheduled task that was created on a different ...
Fix Windows Search Indexing Paused Error 0x80004005
When Windows Search indexing pauses and shows error 0x80004005, search results become incomplete ...
Issue queue
SitemapRemote Desktop Won't Auto-Start on Windows 10
Fix Windows Update Connection Refused When Using VPN
How to Run a Task as a Different User in Task Scheduler
Fix OneDrive Sync Port Already Allocated Permission Denied Error
How to Fix Authentication Failed Product Key Not Valid
Troubleshoot Windows RDP Security Connection Timeout
Microsoft Teams Reset Settings Guide
Fix Task Scheduler Stuck on Loading with Service Not Running
Fix Microsoft Store 404 Error: Practical Steps That Work
How to Reinstall Windows Defender in Windows 10
How to Fix Windows Update on Mac Boot Camp
BitLocker File Locked: Troubleshooting Checklist
Fix Windows Update Connection Refused When Using VPN
How to Run a Task as a Different User in Task Scheduler
Fix OneDrive Sync Port Already Allocated Permission Denied Error
How to Fix Authentication Failed Product Key Not Valid
Troubleshoot Windows RDP Security Connection Timeout
Microsoft Teams Reset Settings Guide
Fix Task Scheduler Stuck on Loading with Service Not Running
Fix Microsoft Store 404 Error: Practical Steps That Work
How to Reinstall Windows Defender in Windows 10
How to Fix Windows Update on Mac Boot Camp
BitLocker File Locked: Troubleshooting Checklist