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

Fix 'Cannot Open as Archive' Error for 7-Zip Password Files

You try to open a password-protected .7z or .zip file with 7-Zip and get the error 'Cannot open a...

Fix Windows Defender Dependency Conflict Registry Error

You might see an error like "Windows Defender can't start because of a dependency conflict" or a ...

Windows Defender 404 Not Found Registry Fix

You open Windows Security and see a blank page or a '404 Not Found' error. This often happens aft...

How to Repair an Outlook Data File (.pst/.ost)

If Outlook suddenly won't open, shows error messages about a data file, or you can't see certain ...

How to Fix Network Errors in Command Prompt