Knowledge base for software setup, errors, and daily tool work.

Fix Windows Activation Authentication Failed: Invalid Product Key

You see "Windows activation authentication failed" or "product key not valid" when trying to acti...

Fix Remote Desktop Rate Limit Error on Windows 10

If you see a message like "The remote computer has exceeded the number of connection attempts it ...

Fix Windows Search 502 Bad Gateway Error Code

You may see a 502 Bad Gateway error when using Windows Search, especially if you rely on web sear...

Fix Windows Defender Service Error 577: Step-by-Step

You try to start Windows Defender, but it fails immediately with error 577, often accompanied by ...

Fixing Dependency Conflicts in Microsoft Teams

If Microsoft Teams fails to start, crashes on launch, or shows errors like “Dependency conflict d...

Fix Windows Search Access Denied for Administrator Account

Why You See 'Access Denied' as Administrator

You're logged in as an administrator, but Wi...