Fix 'Port Already Allocated' Error in Windows Defender on Windows 10 - Windows Terminal Settings: Backup, Restore, and Common Fixes-How to Resolve Windows Defender Real-Time Protection Error 0x80070422
Before changing system settings, save your work and note the exact error text so you can compare results after each step.
Extra verification checklist
- Restart the affected app after changing permissions or configuration files.
- Test the same workflow in a clean browser profile or a temporary user account.
- Compare the result on another network if the error may be connection related.
Related Software Guides
Microsoft Store Offline Installer Not Working on Windows 10: Fixes
Fix Windows Update Service Permissions: Access Denied Error
Remote Desktop Authentication Error: Quick Fixes
Fix Windows Search Not Finding Files in a Folder
Fix Firefox Not Responding When Opening a New Tab
Fix Windows Update Not Installing Due to Low Disk Space