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

Fix Windows Defender Real-Time Protection Grayed Out

You open Windows Security, go to Virus & threat protection, and see Real-time protection is turne...

How to Fix Microsoft Teams 404 Error by Clearing Cache

If you're seeing a 404 error in Microsoft Teams—often when opening a chat, channel, or file—it's ...

PowerShell Connection Refused: Troubleshooting Checklist

When you see "connection refused" in PowerShell, it usually means the remote machine isn't listen...

Fix Windows Update Auto Start Not Working After Update

After a recent Windows update, you might notice that Windows Update no longer starts automaticall...

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...

Fix 'Permission Denied' When Opening System32 in Command Prompt