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

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...

SSH Public Key Permission Denied vs Password Authentication: Fixes

You can SSH into a server using a password, but when you try the same connection with a public ke...

How to Fix Windows Update Version Mismatch Sync Issues

You may see an error like 'Windows Update version mismatch' or 'Sync failed' when trying to updat...

Windows Update Rate Limit Error: Causes and Fixes

When Windows Update shows a rate limit error, it usually means the update service has been trigge...

Fix Microsoft Store Permissions Issue in Windows 10

Fix Task Scheduler 'Access Denied' When Running as Admin

You set a Task Scheduler task to run with highest privileges (administrator), but it fails with a...