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

Outlook Cannot Connect to Exchange Server: Fixes to Try

You open Outlook and see a persistent "Cannot connect to Exchange Server" error. Email stops send...

MongoDB Compass Cannot Connect to localhost:27017 – Fixes

You open MongoDB Compass, enter localhost:27017, click Connect, and get an error: “c...

Fix Chrome Sync Not Working After Windows 10 Update

After a Windows 10 update, Chrome sync may stop working—bookmarks, passwords, and settings won't ...

Avoid Windows Activation Version Mismatch on Reinstall

You reinstall Windows, enter your product key, and get an error: “This product key does not match...

Fix 504 Gateway Timeout with Windows Security Firewall

If you're seeing a 504 Gateway Timeout error on a Windows machine, the Windows Security firewall ...

Windows Security for Ubuntu Installation Checklist

Before You Install Ubuntu

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