E-Mail – Exchange
Operational
The Exchange server operated by the LRZ provides email services to the university, including mailboxes, distribution lists, and calendars.
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There are currently no issues or notifications. This service is operating normally.
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Email mailbox migration to Exchange Online
Maintenance – Resolved after 10d 9h 9m
The migration to Exchange Online is currently underway. Please start using your new mailbox from now on. You can find the instructions here: https://collab.dvb.bayern/x/4Hyllg
The migration of mailbox contents will take place in the following order:
- Employees
- Functional mailboxes
- Lecturers & guests
Update 17 Aug, 11:00
The synchronization of personal and functional mailboxes is complete. Missing a mailbox? Please open a ticket with IT.
The mailboxes of lecturers and guests will follow.
Update 12 Aug, 17:00
The import of contents has begun. Please note that your profile will fill up gradually. Calendar items appear among the last entries.
Update 12 Aug, 15:00
The first mailbox contents have been provided by the LRZ and are being prepared for import.
Thank you for your patience!
Interruption of synchronization of functional email objects
Maintenance – Resolved after 6d 2h 34m
In preparation for the upcoming Exchange migration, no changes to functional mail objects, such as distribution lists or shared mailboxes, are currently being synchronized to the LRZ.
All changes that are currently being made will not be lost and will become active on Tuesday.
ICS links cannot be shared.
Disrupted – Resolved after 12d 3h 7m
According to an announcement from LRZ, it is currently not possible to share or use calendar ICS links. Further information on this can be found on the LRZ status page: Outlook Web (OWA) limited | LRZ Service Status
Occasionally, Outlook and OWA cannot be opened.
Disrupted – Resolved after 3h 27m
Currently, there are intermittent disruptions affecting the mail services. Outlook and OWA may not open in some cases or may fail to synchronize new content.
We are already in contact with the LRZ to resolve the issue as quickly as possible.
Migration of student mailboxes - delivery to the old mailbox
Disrupted – Resolved after 3d 20h 5m
UPDATE 02.04.26
The issue has been resolved. You will now receive all messages in your new mailbox. Nevertheless, please check at https://xmail.mwn.de to make sure you haven’t missed any important messages.
ORIGINAL NOTICE 31.03.2026
As part of the migration, there is a delay on the part of the LRZ. As a result, some emails are still being delivered to the old mailbox. Therefore, please check your old mailbox at https://xmail.mwn.de so you don’t miss any important messages. You will be informed separately as soon as the delay has been resolved.
Migration of student mailboxes to Exchange Online
Maintenance – Resolved after 5d 8h 31m
Currently, the migration of student mailboxes to Microsoft Exchange Online is in progress.
Update 05.04.26, 09:30 The migration of the mailbox contents has been completed.
Update 04.04.26, 15:11 The migration of the mailbox contents has begun.
Update 31.03.26, 13:00 The switchover of the HM app has been completed. Please first sign out of the old mailbox and then sign in with your HM Microsoft account.
Update 31.03.26, 12:00 The switchover of the HM app will take place shortly.
Original message Short delays may currently occur when sending and receiving emails. Student access to their mailboxes may be temporarily restricted.
Solved: Display issues with umlauts
Disrupted – Resolved after 42d 16h 47m
RESOLVED 20 March 2026: The issue was fixed with the Outlook updates from March 10, 2026. Update Outlook to one of the versions listed below. If you have a device managed by HM IT, this update will be installed automatically.
- Version 2601 19628.20252
- Version 2602 19725.20164
- Version 2603 19822.20032
UPDATE 15 February 2026: If you are affected by this issue, Microsoft recommends the following steps as a temporary workaround.
- In Outlook, go to File > Options > Advanced.
- Under International options, disable the option “Automatically select encoding for outgoing messages.”
ORIGINAL NOTICE Currently, some users may experience that umlauts (ä, ö, ü, ß) are not displayed correctly in Outlook emails and instead appear as question marks (?). This can occur in both sent and received emails.
Microsoft is aware of the issue and is working on it. https://support.microsoft.com/en-au/topic/classic-outlook-replaces-accented-and-extended-characters-with-question-marks-c1fdb067-38ca-464a-bcb1-bd657a85e1d3