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

Fix a Corrupted Windows Update Configuration

If Windows Update fails with errors like 0x80070002, 0x80073712, or simply hangs, the update conf...

Fix Error 0x80070422 Windows Security Version Mismatch

You may see error code 0x80070422 when opening Windows Security, often accompanied by a message a...

BitLocker Blank Screen: No Password Prompt Fix

You boot your Windows PC and see a blank screen instead of the BitLocker password prompt. The sys...

Fix Windows Security Offline Installer Error 0x80070643

You're trying to install Windows Security (formerly Windows Defender) using an offline installer,...

Fix WSL Ubuntu Internet Not Working After Windows Restart