Checklists for software errors, setup, and tool workflows.

Outlook PST File Locked: How to Unlock and Access It

You try to open your Outlook data file (PST) and get an error that it's locked or cannot be acces...

Fix Outlook High CPU Usage on Windows 10

If Outlook is slowing down your Windows 10 PC and showing high CPU usage in Task Manager, it can ...

Fix Windows Defender Service Not Starting (Error 0x80070422)

You try to start Windows Defender but get error 0x80070422: “The service cannot be started, eithe...

Fix Command Prompt Crashing Due to Corrupted System Files

If Command Prompt opens briefly and then closes immediately, or crashes during use, corrupted sys...

Fix PowerShell Blank Screen on Windows 11

If you open PowerShell on Windows 11 and see nothing but a blank window—no prompt, no text—the sh...

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" ...