Windows Defender Troubleshooting Checklist
Windows Defender (now Microsoft Defender Antivirus) usually runs quietly in the background, but s...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesCheck for Malware When Windows Activation Causes High CPU Usage
If your computer's CPU usage spikes after a Windows activation attempt, malware may be the culpri...
Fix OneDrive Sync Fails with 504 Gateway Timeout Configuration
You start OneDrive sync and see a 504 Gateway Timeout error. This usually means the sync request ...
Fix OneDrive Download Files Not Syncing
You see files in OneDrive online but they won't download or sync to your PC. The sync icon shows ...
How to Fix Microsoft Store Error 0x80073cf0
You open Microsoft Store to install or update an app, and get error code 0x80073cf0. Usually this...
How to Fix Outlook Slow Performance After an Update
After a recent Office update, Outlook may become noticeably slower—taking longer to open, lagging...
Issue queue
SitemapFix Windows Defender Error 0x800704ec
How to Fix pip SSL Certificate Error with Proxy
Fix Nginx 502 Bad Gateway Behind Cloudflare
How to Resolve Task Scheduler Proxy Sync Problems
Troubleshoot systemd Service Dependency Failure
Chrome Error 0xc0000022: How to Fix
Resolve npm Conflicting Dependency Tree
Restore Lost Chrome Data from Backup
Windows SSL Certificate Error in Chrome: How to Resolve
Windows Defender Network Error Permission Denied Fix
Windows Search Not Working? Reset Configuration
Chrome Profile Module Not Found: Troubleshooting Guide
How to Fix pip SSL Certificate Error with Proxy
Fix Nginx 502 Bad Gateway Behind Cloudflare
How to Resolve Task Scheduler Proxy Sync Problems
Troubleshoot systemd Service Dependency Failure
Chrome Error 0xc0000022: How to Fix
Resolve npm Conflicting Dependency Tree
Restore Lost Chrome Data from Backup
Windows SSL Certificate Error in Chrome: How to Resolve
Windows Defender Network Error Permission Denied Fix
Windows Search Not Working? Reset Configuration
Chrome Profile Module Not Found: Troubleshooting Guide