HITS Exchange Migration (October 2021) - Known Post-Migration Outlook Issues

Tags outlook


HITS Exchange, MiWorkspace, Michigan Medicine


What are the known issues with the HITS Exchange/Outlook migration in October 2021?


Health Information Technology & Services (HITS) is upgrading approximately 48,000 Outlook accounts from onsite servers to the cloud — marking the next major step in making the full Microsoft 365 (M365) experience available to everyone across Michigan Medicine.

  • This upgrade will affect MiWorkspace customers in UHS and College of Pharmacy
  • Account upgrades will happen in “waves” from October 4 through the end of December and customers whose accounts are scheduled will be notified ahead of time

Those who use personal mobile (BYO) devices such as phones and tablets to access email, calendar, or other Michigan Medicine resources (including WiFi) will need to switch from Intelligent Hub to Microsoft Intune following their account upgrade. As customers are notified, HITS will provide full details — including step-by-step instructions, how-to videos, and links to virtual (Zoom) “drop-in” sessions hosted by Help Me Now staff. 

Known post migration issues.

  • Outlook prompts users to log in. First login defaults to “umhs\uniqname” which was the old way to do it, and Outlook’s default prompt because it was the last account used.  This results in people trying to put their Level-2 password in until Outlook would stop accepting it. For Outlook to work correctly, users need to choose “Sign in with another account” so they can sign in with their uniqname@med.umich.edu email address
  • In some cases, login loops after users are logged in correctly. Users keep getting random login prompts to log in again, and then Duo prompts. So far, the work around to fix the issue is to remove their Outlook profile and then add their profile back to Outlook
  • In some cases when customers responded to a calendar invite, they would get a message in their inbox saying they did not have permission to send messages on behalf of the user. So far, the work-around to fix the issue is to remove their Outlook profile and then add their profile back to Outlook

Additional Information

So far, customers who had Office/Outlook 365 installed had an easier time connecting vs. someone with Outlook 2016.

HITS "Outlook in the Cloud & Mobile Device Management Migration" page: https://hits.medicine.umich.edu/outlook-cloud-mobile-device-management-migration

Need additional information or assistance?  Contact HITS at 936-8000 or through the contact information at the bottom of the page linked above.

It may be helpful to contact the ITS Service Center if you are an ITS MiWorkspace participant.

If users are experiencing frequent log-in prompts after migration, removing the profile from Windows machines and re-adding the profile has been known to stop these prompts. If the user is on a Mac, removing the key from Keychain associated with Outlook has a similar effect.


Article ID: 6541
Wed 10/6/21 9:29 AM
Wed 11/17/21 2:31 PM