Fix Microsoft Teams Not Opening on Startup in Windows 11 - Windows Activation Error 0x80070002 Fix-Resolve Access Denied Error in Defender Logs
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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