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 listRemote Desktop Token Expired After Password Change: Fixes
If you changed your Windows password and now remote desktop connections fail with a token expired...
Chrome Extension Install Failed: Common Fixes That Work
You try to install a Chrome extension, but Chrome shows "Install failed" or "Could not install" —...
Fix Windows Defender Permission Denied Access Error
You try to open Windows Defender Security Center or run a scan, and you get a 'permission denied'...
Chrome 502 Bad Gateway Error: Causes and Fixes
You're browsing in Chrome and suddenly see 502 Bad Gateway. This error means tha...
How to Reset VMware Network Adapter Settings
If your VMware virtual machine loses network connectivity, shows an unconfigured adapter, or fail...
Topic paths
Quick titles
Microsoft Store Error 0x80073cf0 TroubleshootingWindows 7 Chrome Not Installing? Try These FixesWindows 10 Outlook Service Unavailable TroubleshootingOutlook for Mac Search Broken? Here's How to Fix ItWindows Activation Login Loop Password Not Accepted FixHow to Resolve Microsoft Store Update ProblemsRemote Desktop Token Expired Error FixHow to Resolve Go Proxy Authentication Failure