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

How to Fix Command Prompt 504 Gateway Timeout Issues

If you're seeing a 504 Gateway Timeout error while using command prompt tools li...

How to Fix Postman Self-Signed Certificate Error

When using Postman to test APIs that use self-signed certificates, you may encounter an error lik...

How to Manually Resolve Windows Update Dependency Conflicts

You run Windows Update, and it fails with an error like 0x80073701 or 0x800f0982. The problem oft...

How to Bypass Proxy in PowerShell Commands

When running PowerShell commands that make web requests, a configured proxy can sometimes block o...

Fix Nginx Config Test Fails with 'upstream host not found'

You run nginx -t and get upstream host not found. The config test fails...

Fix Outlook Blank Screen After Office Installation

Symptom and likely cause

After installing or updating Microsoft Office, Outlook may open ...