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

Outlook 404 Not Found Web App: Fixes and Checks

If you're seeing a 404 Not Found error when trying to open Outlook on the web (formerly Outlook W...

Enable Windows Security Manually When It Fails to Start

If Windows Security (formerly Windows Defender) fails to start, you may see an error like "This a...

Fix Outlook SSL Certificate Error 0x80048820

You try to connect Outlook to your email server and see error 0x80048820. The full message often ...

Fix PowerShell Cannot Connect to Office 365

You open PowerShell, run a command to connect to Office 365, and get an error: "Cannot connect to...

Fix CMD Service Unavailable Due to Group Policy

Situation

You open Command Prompt and see an error like "Command Prompt has been disabled...

How to Fix Windows Security Error 'Access Denied' on Startup

If you see a Windows Security error saying 'Access Denied' right when your PC boots up, it usuall...