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

How to Fix Command Prompt Not Opening as Administrator

You right-click Command Prompt and select "Run as administrator," but nothing happens, or it open...

Fix Microsoft Teams Mic Not Working with External Microphone

You plug in an external microphone, but Microsoft Teams still won't pick up your voice. This is a...

How to Fix Outlook Rate Limit Error in Office 365

Understanding the Error

You may see a message like "Too many requests" or "Server busy" ...

Fix Windows Activation Error 0x80070057: Step-by-Step

When you see "Windows activation failed to start" with error code 0x80070057, it usually means th...

Fix Chrome Authentication Failed by Clearing Cache

You're trying to sign in to a website in Chrome, but you get an "authentication failed" error. Th...

Teams Permission Denied: Troubleshooting Checklist

If you or a user sees a “permission denied” or “access denied” error in Microsoft Teams—whether w...