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

Fix Microsoft Teams SSL Certificate Error: Invalid Certificate

When you see "SSL certificate error: invalid certificate" in Microsoft Teams, the app may fail to...

Windows Defender Offline Scan Setup Guide

If your Windows PC is infected with malware that won't go away with a normal scan, a Windows Defe...

Fix Microsoft Teams Unable to Connect Due to Proxy Settings

If Microsoft Teams shows an error like "Can't connect" or "Something went wrong" and you suspect ...

How to Fix OneDrive 404 Error When Opening Shared Files

When you click a shared OneDrive link and see a 404 error, the file is not deleted or corrupted—u...

How to Fix Command Prompt Error 0x80070005 (Access Denied)