Fix Windows Defender Service Not Starting (Error 404)
If you see error 404 when trying to start Windows Defender, it usually means the service executab...
Checklists for software errors, setup, and tool workflows.
1. Reproduce
2. Isolate
3. Apply
4. Verify
Latest checklists
View listWhere to Find Windows Search Log Files in Windows 10
If Windows Search isn't working as expected—missing files, slow results, or high CPU usage—the lo...
How to Fix Microsoft Store Not Working After Update
After a Windows update, the Microsoft Store may fail to open, load slowly, or show error codes. T...
Fix Windows Terminal Proxy Not Working: Practical Steps
If your Windows Terminal isn't routing traffic through your system proxy, you're likely seeing co...
How to Fix Chrome Profile Update Error: A Practical Guide
If you see a message like “Your profile could not be opened correctly” or “Update failed” when st...
Fix Microsoft Store Error 0x80073cf3 After Update
If you see error 0x80073cf3 when opening the Microsoft Store after a Windows update, the store ap...
Topic paths
Quick titles
Fix Blank Screen After Windows Update in Safe ModeHow to Fix Command Prompt Not Opening After Windows 11 UpdateOutlook 502 Bad Gateway Error Antivirus FixHow to Resolve Chrome Token Expired on Windows 10Setup Chrome Profile Download Location on WindowsResolve venv Activation Syntax Error on LinuxCommand Prompt Token Expired vs PowerShell: Key DifferencesHow to Restore Windows Defender After an Update