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

Check If Your Windows License Is Retail or OEM

If you're troubleshooting activation issues or planning to transfer Windows to a new computer, kn...

How to Check Which Process Is Using a Port in PowerShell

When a service fails to start or an application complains that a port is already in use, you need...

Fix OneDrive Sync Port Already Allocated Error on Windows 10

You might see the error "OneDrive sync port already allocated" on Windows 10 whe...

Fix Chrome Profile Authentication Failed & Sync Not Working

If you see “Authentication failed” in Chrome and sync has stopped working, it usually means a pro...

Fix KMS Activation Error: Port 1688 Already in Use

Fix Remote Desktop Log File Permission Denied Error

When you try to open a remote desktop log file—often located in %WINDIR%\System32\winevt\Lo...