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 Enable DNS over HTTPS in Chrome
If you've noticed that your browser seems to be leaking DNS queries or you want to prevent your I...
Fix Outlook 404 Not Found Error on Windows 10
If you see a '404 Not Found' error when opening Outlook or clicking a link in an email, it usuall...
How to Fix BitLocker 502 Bad Gateway Error
When enabling or managing BitLocker, a '502 Bad Gateway' error can appear in the management conso...
Fix Outlook Connection Errors Due to Firewall Settings
If Outlook cannot connect to your email server and you suspect your firewall is blocking it, you’...
Fix Windows Search Connection Timeout on Domain Network
If Windows Search stops responding or shows a connection timeout error on a domain-joined compute...
Topic paths
Quick titles
Chrome Browser Issues: Step-by-Step Checklist for WindowsHow to Resolve Windows Update ThrottlingCloudflare DNS Configuration Guide for TroubleshootingMicrosoft Store 0x80070424 Troubleshooting GuideHow to Resolve OneDrive Token Expired IssueHow to Restore Store Sync After Failed LaunchWindows Security Cache Clearing GuideOneDrive High Memory Usage: Troubleshooting Checklist