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....
Software comparisons, alternatives, and tool decision notes.
Fit
Decision
Migration
Latest comparisons
Browse labHow to Fix Windows Defender Real-Time Protection Stuck
Windows Defender’s real-time protection sometimes gets stuck—either refusing to turn on after bei...
Fix OneDrive File Locked by Office Document Sync Issue
You open an Office file from OneDrive and see an error that the file is locked or in use by anoth...
Fix Windows Update Token Expired via Group Policy
When Windows Update fails with a "token expired" error, it often indicates a problem with the com...
How to Fix the BitLocker Recovery Key Invalid Error
You enter your BitLocker recovery key at the Windows startup screen, but the system says it's inv...
Fix Windows Defender Error 0x80070643 – Version Mismatch
You update Windows Defender and see error code 0x80070643. The update fails, and Defender may dis...