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

How to Fix Windows Defender Not Working

If Windows Defender won't open, stops responding, or fails to update, you're not alone. This guid...

Check If Your Windows License Is Retail or OEM

If you're troubleshooting activation issues or planning to transfer Windows to a new computer, kn...

BitLocker Backup Restore Tool Not Detecting Drive: Fixes

You connect a drive that contains a BitLocker backup, but the restore tool doesn't see it. This c...

Fix Outlook Error 0x80040115: Service Unavailable

When Outlook shows error 0x80040115 and says the service is unavailable, it usually means the pro...

Fix Microsoft Teams Offline Installer Not Launching

You've downloaded the Microsoft Teams offline installer but double-clicking it does nothing—or ma...

How to Fix Outlook Proxy Authentication Failed Error