Fix Windows Security Not Launching at Startup
You restart your PC and notice Windows Security (formerly Windows Defender) isn't running. The ic...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listHow 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 Microsoft Store 404 Not Found Error
Seeing a 404 Not Found error when opening the Microsoft Store is frustrating, but it's often fixa...
Chrome Extension Blocked by Administrator: How to Fix
You see the message "This extension is blocked by your administrator" in Chrome, and you can't en...
How to Fix Remote Desktop Login Loop on Windows 10
You try to log into a Windows 10 machine via Remote Desktop, enter your credentials, and instead ...
How to Fix Rate Limit Errors in Windows Security App
You open Windows Security to run a scan or check protection status, and get a rate limit error. T...
Topic paths
Quick titles
Outlook Proxy Settings Not Saving: Fixes That WorkResolve 504 Gateway Timeout in Azure Functions via PowerShellHow to Set Up Remote Desktop for Multiple Users on Windows 11Windows Defender Credential Loop TroubleshootingWindows Security Not Opening? Fix Error 0x80073cfcFix Permission Denied When Updating Windows DefenderChrome Invalid Configuration File Location Error GuideWindows Search Token Expired: Troubleshooting Guide