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...

Remote Desktop 502 Bad Gateway Fix: Practical Checklist

You’re trying to connect to a remote desktop and get a 502 Bad Gateway error. This usually means ...

Fix ‘Permission Denied’ When Auto-Starting Remote Desktop

You set your remote desktop client to launch automatically at startup, but instead of connecting,...

How to Fix Chrome DNS Error Code 105 (ERR_NAME_NOT_RESOLVED)

If you see "DNS error code 105" or "ERR_NAME_NOT_RESOLVED" in Chrome, it means the browser cannot...

OneDrive Sync Setup Guide for Ubuntu 22.04

If you're using Ubuntu 22.04 and need to sync files with OneDrive, the official Microsoft client ...

Fix Microsoft Store Permissions Issue in Windows 10