Fix Windows Defender Error 0x80073b01 (Crash on Startup)
If Windows Defender crashes on startup with error code 0x80073b01, the antivirus service may be f...
Software troubleshooting desk
Practical fixes for tool errors, setup blocks, and workflow issues.
Symptom
Cause
Fix route
Verify
Fresh repair notes
All notesFix Windows Search Connection Refused Due to Firewall
If Windows Search gives you a "connection refused" error, it usually means the firewall is blocki...
Fix Outlook SMTP 587 Port Already Allocated Error
You try to set up or send email in Outlook, and you see an error about port 587 already being all...
Fix Windows Update Keeps Reverting Changes
You click 'Install updates', wait for the progress bar, and then see the dreaded message: 'Undoin...
Fix 'Path Not Found' Error in Windows Terminal for PowerShell
When you open Windows Terminal and try to start a PowerShell profile, you might see an error like...
Fix Task Scheduler Not Running on Windows 10
Task Scheduler not running tasks can be frustrating. You might see tasks stuck at "Ready" or "Run...
Issue queue
SitemapHow to Recover from BitLocker Lockout After BIOS Update
Resolve Chrome Extension Permission Denied
BitLocker Cache Not Clearing: Troubleshooting Steps
Fix Windows Activation Offline Installer Sync Issues
How to Lower Windows Defender CPU Usage
Outlook Not Starting Automatically After Reinstall
Mac Docker Access Denied Fix When Pulling Images
How to Fix Redis Sentinel Connection Refused
How to Fix Windows Activation High Memory Usage
Windows Update Won't Start Automatically – Solutions
Fix Remote Desktop Port Conflict After Windows Update
How to Fix Teams Permission Denied on Ubuntu
Resolve Chrome Extension Permission Denied
BitLocker Cache Not Clearing: Troubleshooting Steps
Fix Windows Activation Offline Installer Sync Issues
How to Lower Windows Defender CPU Usage
Outlook Not Starting Automatically After Reinstall
Mac Docker Access Denied Fix When Pulling Images
How to Fix Redis Sentinel Connection Refused
How to Fix Windows Activation High Memory Usage
Windows Update Won't Start Automatically – Solutions
Fix Remote Desktop Port Conflict After Windows Update
How to Fix Teams Permission Denied on Ubuntu