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

Fixing Microsoft Teams Rate Limit Errors in Graph API

When working with Microsoft Teams via Graph API, you may encounter HTTP 429 or similar rate limit...

UFW Port Closed Despite Allow Rule: Fixes

You've added a UFW allow rule for a port, but a port scan or service test shows the port is still...

Fix 'Outlook Path Not Found' Error After Migration

Set Up Outlook Proxy for Exchange: Step-by-Step

When Outlook can't connect to Exchange, a misconfigured proxy is often the culprit. This guide wa...

Fix Windows Update Error 0x800f081f for Offline Install

You’re trying to install a Windows update manually—maybe a cumulative update or a .cab file—and y...

How to Unlock a File in Windows Terminal

If you've ever tried to delete, rename, or move a file and got a message like “The action can't b...