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

BitLocker Authentication Failed: USB Key Not Recognized Fix

When BitLocker prompts "Authentication failed" and your USB key isn't recognized, the drive is lo...

Fix Windows Defender Error 0x800106ba: Failed to Start

If you see “Windows Defender failed to start” with error code 0x800106ba, the Windows Defender se...

Fix Maven Dependency Resolution Failed in IntelliJ

Fix Windows Update Authentication Failed Due to Group Policy

You try to run Windows Update and get an error like "Authentication failed" or "0x80070005" – and...

Fix VS Code Extension Host Crashing on Startup

If Visual Studio Code opens but then immediately shows an error that the extension host has termi...

Fix BitLocker DNS Error Permission Denied

If you see a BitLocker DNS error permission denied message, it usually means the...