How to Allow an App Through Windows Defender Firewall
If an app can't connect to the internet or network, Windows Defender Firewall may be blocking it....
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listWindows Security App Not Opening After Update: Fixes
After a Windows update, the Security app may refuse to open—clicking the icon does nothing, or it...
How to Fix a Corrupted Chrome Profile: Repair Tools & Steps
If Chrome keeps crashing, shows a "Profile Error" message, or fails to save bookmarks and passwor...
How to Fix Windows Security Real-Time Protection Not Turning On
If you see that Windows Security's real-time protection is stuck off and won't turn on, you're no...
How to Fix Command Prompt Error 0x80070005 (Access Denied)
When you see error code 0x80070005 in Command Prompt, it usually means 'Access Denied.' This ofte...
Fix OneDrive Sync Service Unavailable on Windows 10
You open OneDrive and see 'Sync service unavailable' with no files syncing. This usually means th...
Topic paths
Quick titles
How to Resolve Defender Update Error 0x80240022Permanently Disable Windows Defender Real-Time ProtectionSolving npm ERR! code ERESOLVE in React AppsHow to Stop Outlook Asking for Password RepeatedlyTroubleshoot Microsoft Teams Lag During CallsPowerShell Execution Policy Error FixFix Remote Desktop 404 Error from Missing Web InterfaceFix PowerShell 404 Not Found Error in Scripts