Ensure you have delivery set to the Exchange mailbox and not a .pst. If it is already set that way, then you may want to run Office Diagnostics. Lastly, you may want to create a new mail profile to see if that fixes the problem.

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Milly Staples [MVP - Outlook]
Post all replies to the group to keep the discussion intact. All
unsolicited mail sent to my personal account will be deleted without
reading.
After furious head scratching, North Star asked:
| Good Afternoon,
|
[quoted text clipped - 5 lines]
|
| Thank you in advance for your time and consideration!