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

Docker Daemon Not Running After Installing Docker Desktop

You installed Docker Desktop, but when you open the application, the Docker daemon never starts—t...

Fix Windows Security Authentication Error 0x80070035

How to Fix Outlook Data File Cannot Be Accessed Error

You open Outlook and see: "Outlook data file cannot be accessed." This usually means Outlook can'...

Fix Outlook Module Not Found Permission Denied Error

When you see 'module not found' or 'permission denied' in Outlook, it usually means Outlook canno...

UFW Deny Port But Still Accessible: Fixes and Checks

You set a UFW deny rule for a specific port, but the port remains accessible from outside. This i...

How to Kill a Process Using a Port in Command Prompt

When you try to start a local server or application and see an error like "port already in use" o...