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

SSH Permission Denied (Publickey) on EC2: Setup Fixes

If you're seeing "Permission denied (publickey)" when trying to SSH into an AWS EC2 instance, the...

Windows Terminal Login Loop: How to Fix

You open Windows Terminal, it prompts for credentials, you enter them, and then it loops back to ...

Fix 'Windows Update Auto Start Service Not Found' Error

You may see a message that the Windows Update auto-start service is not found, often when trying ...

Fix Remote Desktop Error Code 0x4 on Mac

You try to connect to a Windows PC from your Mac using Microsoft Remote Desktop, but the connecti...

Fix 'File Locked by Unknown Process' in Command Prompt

You try to delete, rename, or move a file, but Windows says it's locked by an unknown process. Th...

Outlook Authentication Failed: Checklist to Verify Credentials