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

Windows Restore Point Missing After Update – How to Fix

You updated Windows, and now your System Restore points are gone. This is a known issue after maj...

How to Fix Command Prompt Not Opening in Windows

When Command Prompt (cmd.exe) refuses to open—either by clicking, typing 'cmd' in Run, or via the...

Fix Windows Search Access Denied for Administrator Account

Why You See 'Access Denied' as Administrator

You're logged in as an administrator, but Wi...

Fix Windows Security Cannot Connect to the App

When you see 'Windows Security cannot connect to the app' while trying to open Windows Security o...

How to Fix Chrome DNS Error Code 105 (ERR_NAME_NOT_RESOLVED)

If you see "DNS error code 105" or "ERR_NAME_NOT_RESOLVED" in Chrome, it means the browser cannot...

Chrome Profile 404 Not Found: Troubleshooting Checklist

You try to open Chrome and get a 404 error for your profile, or you see a message that the profil...