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

Outlook 404 Not Found on Shared Mailbox: Fixes & Checks

You try to open a shared mailbox in Outlook and see a 404 Not Found error. This usually means Out...

How to Fix an Outlook File Locked Due to Sync Issue

You try to open Outlook and see a message that your data file (.pst or .ost) is locked. Often thi...

Fix OneDrive Sync Module Not Found Registry Error

If you see an error like "OneDrive sync module not found" or a registry-related message when star...

Fix OpenVPN Authentication Error: Step-by-Step Guide

If you're seeing "authentication error" when trying to connect to an OpenVPN server, the connecti...

Fix PowerShell Proxy Authentication Failed Errors

PowerShell Version Mismatch: A Sysadmin Checklist

You run a script that worked yesterday, and today it throws errors about missing cmdlets, incompa...