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

Jupyter Kernel Not Starting After Update: Fixes

After updating Jupyter or its dependencies, you might see the kernel die immediately or hang with...

How to Resolve Python Dependency Conflicts in Command Prompt

Understanding the Symptom

You're working in Command Prompt on Windows, trying to install ...

Windows Update Stuck at 100% After Restart: How to Fix

You restart your PC after a Windows update, but it hangs at "100% complete" for 10 minutes or mor...

Checklist: Windows Update Service Not Running in Services.msc

When you open Services.msc and see that the Windows Update service (wuauserv) is not running, or ...

UFW Allow Port Range Not Opening: Fixes and Checks

If you've added a UFW rule to allow a range of ports but connections are still being blocked, the...

How to Fix Cloudflare Error 525: SSL Handshake Failed

When you see Cloudflare error 525, it means the SSL handshake between Cloudflare and your origin ...