Windows Defender 502 Bad Gateway: Troubleshooting Checklist
If you see a 502 Bad Gateway error when opening Windows Security or trying to update Windows Defe...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listFix Chrome Crashing on Windows 11 with Error Code
You're browsing in Chrome on Windows 11 when the browser suddenly closes or freezes, often showin...
Fix Windows Update Service Permission Denied Error
You try to start the Windows Update service via services.msc or an elevated command prompt and ge...
Why OneDrive Sync Is Pending on Mac and How to Fix It
You're working on a file in OneDrive on your Mac, and the sync icon shows a pending status. The f...
Fix Windows Terminal JSON Settings 404 Not Found
You open Windows Terminal, click Settings, and instead of the JSON file you get a blank page or a...
Fix Windows Search SSL Certificate Error: Step-by-Step Guide
You search for a file or setting in Windows, but nothing appears—or you see an error about an SSL...
Topic paths
Quick titles
How to Resolve Windows Update Proxy Errors After Switching NetworksPowerShell Command Not Found After Install: Step-by-Step FixFixing GitHub Actions Self-Hosted Runner Connection IssuesWindows Defender Service Not Starting in Windows 10: FixesOutlook Yahoo Mail Connection Fix GuideWindows Terminal Access Error ChecklistMicrosoft Teams CAA70007: Causes and FixesTroubleshooting 'Windows Activation Server Not Available'