Outlook Setup Cannot Connect to Server: Fixes to Try - Resolve 'Not Recognized' Error in Command Prompt-OneDrive Error 0x80070194: How to Fix Sync Problems
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.