Checklists for software errors, setup, and tool workflows.

Fix Git SSL Certificate Problem: Unable to Get Local Issuer

You run git clone https://example.com/repo.git and get:

fatal: unable to acc...

Fix Windows Update Error 0x80070002: Missing File

If you see error 0x80070002 when running Windows Update, it usually means the system cannot find ...

Docker Container Exits Immediately with Exit Code 137

You start a Docker container, and it exits almost immediately with exit code 137. This usually me...

Fix Windows Update Service Not Running for System Restore

You might see “System Restore did not complete successfully” or “Windows Update service is not ru...

Windows Defender Real-Time Protection Greyed Out: How to Fix

If you open Windows Security and see the real-time protection toggle greyed out, you can't tu...

Fix npm install Permission Denied on Shared Hosting

When you run npm install on a shared hosting server, you might see errors like