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

UFW Deny Port But Still Accessible: Fixes and Checks

You set a UFW deny rule for a specific port, but the port remains accessible from outside. This i...

How to Set Up Windows Activation on Ubuntu Dual Boot

If you installed Ubuntu alongside Windows and now see an activation warning, you're not alone. Wi...

BitLocker SSL Certificate Error on Windows 10: Fixes

You're trying to unlock a BitLocker-protected drive, but Windows 10 throws an SSL certificate err...

Fix Windows Search Network Error Configuration Issues

When Windows Search fails with a network error, it usually means the search service can't reach i...

Fix Windows Defender High Memory Usage & Error 0x80070002

You might see Windows Defender consuming a lot of memory, and then get error code 0x80070002 when...

Fix nvm not working in CMD or PowerShell on Windows