OneM365 - Home and Learning Resources
Migration Dates, Checklists, Instructions
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Common Issues and Migration-Related FAQs
Issue: Outlook desktop app failing to launch, freezing, or stuck in certificate/authentication loops, while Outlook Web (OWA) works
Solution: Use Outlook Web Access (OWA) instead of the desktop client when desktop Outlook fails.
Issue: Missing or delayed emails, gaps in mailbox history, etc.
Solution: Launch Outlook via shortcuts in the “Mich Med Migration” desktop folderand sign in explicitly with the @uofmhealth.org account.
Issue: Sending failures unless the full legacy address (for example @umhwest.org or @umhsparrow ) is typed.
Solution: Type out the full legacy email address when sending to West/Sparrow users if autocomplete fails.
Issue: Desktop Teams not opening, freezing, or claiming the user is not logged in; web version of Teams works.
Solution: Use Teams in a web browser (Edge) when the desktop app fails. Switch to an Edge Guest profile or create a new Edge profile, then sign in with @uofmhealth.org account.
Issue: Teams meeting button missing in Outlook (only Zoom visible); Favorite chats not persisting.
Solution: Missing Teams icons or add‑ins sometimes required IT to remote in and re‑add them. In some cases, restarting Teams resolves missing features such as favorites or add‑ins.
Issue: Recurring meetings sending multiple daily invites instead of one series.
Solution: Some calendar issues resolved after waiting for sync/cached mode to catch up.
Issue: Shared calendars missing or inaccessible in New Outlook.
Solution: Restarting Outlook or re‑adding shared calendars worked for some users.
Issue: Can't find a shared mailbox.
Solution: If you do not see one of your shared mailboxes, follow these instructions to re-add a shared mailbox. If you cannot add it, submit a ticket.
Issue: OneDrive desktop app errors while web access works.
Solution: Access files temporarily via OneDrive on the web when the desktop client fails.
Issue: Epic exports not showing OneDrive as a destination
Solution: Copy files locally (for example to C:\ or Desktop) as a temporary workaround if apps cannot see the correct OneDrive path.
Issue: Blank or missing notebooks.
Solution: Try opening and signing in to your (new) OneDrive, and wait a bit for your OneNote folders to reconnect.
Issue: Certificate pop‑ups looping
Solution: Click the certificate entry itself before selecting OK during login prompts.
Issue: AADSTS errors for apps like ServiceNow
Solution: Use Edge Guest mode or a fresh Edge profile to avoid cached credentials.
Issue: Outlook and Teams not syncing on phones
Solution: Only one Intune Company Portal profile can exist at a time; users must remove the old profile before adding the new one.