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

How to Resolve Port Conflicts Using Command Prompt

If you see an error like "port already in use" or "address already in use" when starting a server...

Fix Windows Defender Service Unavailable Error

You open Windows Security and see the message 'Windows Defender service unavailable' or 'Windows ...

Fix Remote Desktop Connection Settings Reset Error 0x4

When you try to start a Remote Desktop session and see error 0x4, the connection settings might h...

Fix OneDrive Authentication Failed in Office 365

You see "OneDrive authentication failed" when signing into Office 365. This usually means OneDriv...

How to Allow an App Through Windows Defender Firewall

If an app can't connect to the internet or network, Windows Defender Firewall may be blocking it....

Fix 'Outlook Path Not Found' Error After Migration