This browser is no longer supported.
Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(246.4, 99%, 33%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAS%3C/text%3E%3C/svg%3E)
Dears
Since March 2024 (it seems after the 1st half), if an users changes his password in an Hybrid Exchange envirnoment AND his UPN is no hydentical to this email address (example: UPN=john@adatum.local, Email=******@adatum.com), Outlook Mobile does not accept credentials (error during authentication).
The issue is solved only after UPN alignment
Is anyone experiencing this issue?
Any solution apart from the one above?
Thanks
A robust email, calendaring, and collaboration platform developed by Microsoft, designed for enterprise-level communication and data management.Miscellaneous topics that do not fit into specific categories.
The administration and maintenance of Microsoft Exchange Server to ensure secure, reliable, and efficient email and collaboration services across an organization.
The administration of a hybrid deployment that connects on-premises Exchange Server with Exchange Online, enabling seamless integration and centralized control.
A powerful email and collaboration platform developed by Microsoft, designed to support enterprise-level communication and productivity. Miscellaneous topics that do not fit into specific categories.
john@adatum.local should have never worked I wouldnt think. its not a internet routable domain suffix.
Correct, we use to keep @adatum.local UPNs for accounts that do not use cloud services like teams or similar
These users only have an on-prem email that must be accessed from outlook mobile; untile March no issues but now after password change, if UPN is ...local there's no way to let Outlook MObile works; other apps have no issues.
This is a known issue which is impacting login where domain name is different than the domain in email address. Microsoft have been working on this.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(268.8, 70%, 36%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ESM%3C/text%3E%3C/svg%3E)
Is there some estimation when it can be fixed?
Hi A Ska,
If you have SSO with hybrid Authentication you can still have integration in the identity.
You need to have modern authentication, with outlook clients supported and some considerations if you implement MFA meanwhile.
Do you have hybrid identity?
Version of Outlook?
MFA in login?
Entra ID have a great logs to understand login issues.
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(291.2, 52%, 38%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EJS%3C/text%3E%3C/svg%3E)
Last 14 days it is almost unreal to add account. Sometimes it works after some time (24h). Devices are managed via intune.