Fix Remote Desktop Port Already Allocated Error - Troubleshooting Error 0x80070643 with Windows Defender on Mac-Troubleshooting Guide for Remote Desktop Error 0x800704cf
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.
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