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

Fix Git Clone Permission Denied (publickey) on Mac

When you run git clone and see Permission denied (publickey), Git canno...

Fix PowerShell Profile Causing Blank Screen at Startup

You open PowerShell, see a blank screen with no prompt, and the window appears frozen. This usual...

Fix Microsoft Store Not Opening Due to Corrupted Cache

If the Microsoft Store refuses to open—showing a blank window, a spinning circle, or nothing at a...

Command Prompt Connection Error Troubleshooting Guide

How to Fix Windows Update Error 0x80073712 with a Clean Boot

Windows Update error 0x80073712 usually appears when a system file required for the update is mis...

How to Fix Windows Security 404 Not Found Error

If you see a '404 Not Found' error when opening Windows Security (formerly Windows Defender), the...