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

Fix Chrome Proxy Authentication Failed Errors

When Chrome shows 'proxy authentication failed' or 'ERR_PROXY_AUTHENTICATION_FAILED', it usually ...

How to Backup Chrome Profile Before Reinstalling

When you reinstall Chrome, you risk losing all your bookmarks, saved passwords, extensions, and s...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

If you're dual-booting Windows and Ubuntu, or replacing Windows...

How to Repair Corrupted Windows System Files Using SFC and DISM

You might be seeing blue screens, application crashes, or strange error messages. Corrupted syste...

Checklist for Resolving Windows Terminal Dependency Conflict

You open Windows Terminal and see errors about missing DLLs, package version mismatches, or the t...

Fix Windows Store Error 0x80073cf9 Permission Denied

When you see error 0x80073cf9 in the Windows Store, it usually means the installer can't write to...