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

Fix High CPU Usage by MsMpEng.exe (Windows Defender)

If your system feels sluggish and Task Manager shows MsMpEng.exe using 30–100% CPU, Windows Defen...

Fix Microsoft Teams DNS Error After Update

After a Microsoft Teams update, you may see a DNS error preventing sign-in or connection. This us...

Fix PowerShell Authentication Failed Credentials Error

PowerShell High CPU Usage: Setup and Optimization Guide

You launch PowerShell and notice your CPU usage spikes to 80% or more, even when you're not runni...

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 'Outlook Data File Cannot Be Accessed' Error in Outlook 365

You open Outlook 365 and get the message: 'Outlook data file cannot be accessed.' This usually me...