Fix Windows Defender 404 Not Found After Update
After installing a recent Windows update, some users find that Windows Defender is missing or sho...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix BitLocker Authentication Failed: Permission Denied Access
You try to unlock a BitLocker drive, and Windows returns "Authentication failed. Permissi...
Fixing Nginx Permission Denied for Upstream Unix Socket
If you see connect() to unix:/var/run/php-fpm.sock failed (13: Permission denied) in...
Fix Windows Search Service Not Running
You open the Start menu or File Explorer to search for a file, and nothing happens — or you see a...
Fix Windows Search Authentication Failed Configuration Error
You may see a notification that Windows Search indexing couldn't start due to an authentication f...
Fix PowerShell Authentication Token Expired in Automation Scripts
When running PowerShell automation scripts that interact with cloud services or APIs, you may enc...
Issue queue
SitemapOutlook Not Receiving Emails from One Sender: How to Fix
How to Resolve Store Backup Failure
Fix Windows Search Offline Installer Error 0x80070005 (Permission Denied)
Troubleshoot Windows Search Offline Installer Hang
How to Stop a Stuck Windows Update Cleanup Service
Setup Guide for Windows Terminal Rate Limit Issues
Fix Windows Update Component Not Found Error
Resolve Port Already Allocated in Windows Store
How to Fix 'Security Module Not Found' in Windows Security
Chrome Blank Screen on Windows 10 – Fix Guide
Chrome Gateway Timeout Fix After Browser Update
How to Enable and Troubleshoot Windows Terminal Logging
How to Resolve Store Backup Failure
Fix Windows Search Offline Installer Error 0x80070005 (Permission Denied)
Troubleshoot Windows Search Offline Installer Hang
How to Stop a Stuck Windows Update Cleanup Service
Setup Guide for Windows Terminal Rate Limit Issues
Fix Windows Update Component Not Found Error
Resolve Port Already Allocated in Windows Store
How to Fix 'Security Module Not Found' in Windows Security
Chrome Blank Screen on Windows 10 – Fix Guide
Chrome Gateway Timeout Fix After Browser Update
How to Enable and Troubleshoot Windows Terminal Logging