Fix 'Windows Defender Firewall Has Blocked' Error
You see a notification that Windows Defender Firewall has blocked an app or feature. This usually...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow to Fix Remote Desktop File Locked Error
When you see a 'file locked' error in Remote Desktop, it usually means a file on the remote compu...
Fix Network Error 0x80070035 in Command Prompt
When you try to access a shared folder or network drive using command prompt and get error 0x8007...
Fixing Windows Security Proxy Configuration Issues
When Windows Security (formerly Windows Defender Security Center) can't update virus definitions ...
Microsoft Teams 502 Bad Gateway Error: Troubleshooting Checklist
When you see a 502 Bad Gateway error in Microsoft Teams, it usually means the server received an ...
Fix BitLocker 502 Bad Gateway During Recovery Key Retrieval
When you're locked out of a BitLocker-encrypted drive and the recovery key page returns a 502 Bad...
Topic paths
Quick titles
Troubleshooting Error 0x4 in Microsoft Remote Desktop for MacFix Teams Won't Open: A Practical GuideFix OneDrive Sync Stuck Due to Network IssuesMicrosoft Store SSL Certificate Error: Troubleshooting ChecklistHow to Set Up a New Chrome Profile After an ErrorFind Task Scheduler History Log in Windows 10Fix Chrome Backup Restore Permission Denied ErrorMicrosoft Store Error 0x80073d02: Causes and Fixes