This document details how to recreate an Outlook profile when you have syncing issues.
Step 1. Ensure that Outlook is completely closed.
Step 2. Open the Control Panel by searching for the application in the Microsoft search bar near Cortana. Go to the search bar on the top right of the Control Panel and type in Mail.
Step 3. Select the option that says “Mail (Microsoft Outlook 2016)”
Step 4. Select Show Profiles near the bottom of the window.
Step 5. Select Add located at the bottom of the white text box.
Step 6. Rename the new profile (the name of the new profile does not matter). Then select Ok.
Step 7. The next window will prompt you to enter your email address for your Outlook account. Ensure the information you enter is correct and then select Next.
Step 8. Once Outlook has finished connecting (this could take up to 15 minutes) select Finish.
Step 9. Next, in the drop-down menu for "Always use this profile", select the profile you just created. Then, select Apply and Ok.
Step 10. Re-open Outlook (this might take a moment) and the problem should be resolved.