Fix Outlook Not Redirecting After Exchange Hybrid Migration to Microsoft 365
Question details
Users need to resolve a connection issue where Outlook clients fail to redirect to Microsoft 365 after their mailboxes have been migrated from an on-premises Exchange server.

- Product
- Microsoft Outlook / Exchange
- Device & OS
- Windows, Android
- Scenario
- Accessing mailboxes post-migration in an Exchange Hybrid environment.
- Observed behavior
- Outlook desktop and Outlook for Android clients continue connecting to the on-premises Exchange server instead of redirecting to Microsoft 365.
Ensure that your mailbox migration to Microsoft 365 has fully completed and that you have your updated Office 365 login credentials available.
Create a New Mail Profile in Outlook Desktop
This clears the cached Autodiscover information that forces Outlook to connect to the old on-premises server.
When a mailbox is migrated, the existing Outlook profile often retains outdated Autodiscover XML files. Creating a completely new profile forces the client to fetch the latest Microsoft 365 Autodiscover settings.
Ensure that the Microsoft Outlook application is completely closed on your desktop.
Open the Windows Control Panel, change the view to 'Large icons' or 'Small icons', and click on 'Mail (Microsoft Outlook)'.
In the Mail Setup window, click on the 'Show Profiles' button.
Click 'Add', type a name for the new profile, and follow the setup prompts to configure your Microsoft 365 email account.
Select 'Always use this profile', choose your newly created profile from the dropdown menu, and click 'OK'.
Reconfigure the Outlook Mobile App
Resolves redirection failures for Outlook on Android devices by flushing old server configurations.
Update the Exchange Hybrid Configuration Wizard
An administrative step to ensure proper Hybrid Mobile Access and OWA redirection.
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Frequently Asked Questions
How do I access my email on the web after a Microsoft 365 migration?
Once your mailbox is migrated, you should access Exchange Online using the Outlook on the web (OWA) portal at https://outlook.office365.com/owa.
Why is Outlook desktop still trying to connect to my old server?
Outlook caches the Autodiscover settings from your old on-premises server within your mail profile. Deleting the old profile and creating a new one forces Outlook to securely retrieve the updated Microsoft 365 server details.
Does WPS Office include an email client like Outlook?
WPS Office focuses on core document productivity (Writer, Spreadsheet, Presentation, and PDF) and does not include a dedicated email client. However, it functions perfectly alongside any standalone or web-based email application you prefer to use.




