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

Fix Command Prompt Version Mismatch on Windows 10

When you open Command Prompt and see a message about a version mismatch—or commands behave unexpe...

How to Fix Outlook DNS Error When Sending Email

You're composing an email in Outlook, hit Send, and get an error like "Your server does not suppo...

Fix Windows Update Stuck on 'Pending Install' for Hours

You click 'Check for updates,' see 'Pending install,' and it stays that way for hours. The progre...

Remote Desktop Backup Restore Troubleshooting Checklist

When a remote desktop backup or restore fails, the problem often lies in network connectivity, pe...

Fix "7zip Cannot Open File as Archive" Permission Denied Error

You try to open an archive with 7-Zip and get: "Cannot open file as archive" fol...

MongoDB Authentication Failed: Administrator Checklist