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

Fix Windows Activation Error 0xc004c003 After Hardware Change

If you see error 0xc004c003 after upgrading your PC's motherboard, CPU, or other major hardware, ...

UFW Allow Port Not Working After Reboot: Fixes That Actually Work

You added a UFW rule to allow a port, it works fine until you reboot, then the port is blocked ag...

Fix Outlook Data File Access After Password Change

If you changed your Windows login password or your email account password and now Outlook shows '...

How to Restore Chrome Profile After a Crash

Symptoms of a Corrupted Chrome Profile

After a browser crash, you might see errors like '...

BitLocker Auto-Unlock Not Working with TPM: Fixes

You've set up BitLocker with a TPM, and it used to unlock your drive automatically at startup. No...