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 listFix Windows Activation Blocked by Proxy Server
If Windows activation fails with an error like “We can’t activate Windows on this device because ...
Fix Chrome 'Permission Denied' Error on Windows 10
You’re trying to download a file, access a local folder, or run a Chrome extension, and instead y...
Fix Windows Defender High CPU Usage in Windows 10
If you notice your PC slowing down and the fan spinning up, Windows Defender might be using more ...
Fix Windows Activation Error 504 Caused by Firewall Settings
You try to activate Windows and get error 504. This often means your firewall is blocking communi...
Fix 'Java JDK Not Recognized' in Linux Bash
When you type java -version in a Linux terminal and get bash: java: command no...
Topic paths
Quick titles
Outlook Sync Error Fix GuideFix Command Prompt Network Error: Permission DeniedTroubleshoot 'Connection Refused' in Command PromptUSB Drive Recovery Key Not Accepted by BitLockerHow to Reset VMware Network Adapter SettingsWindows Search Connection Timeout Registry SolutionFix Windows Search Permission Denied ErrorTroubleshoot Outlook Blank Screen Caused by Add-Ins