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Update October 8, 2026

The outage has been resolved by Microsoft. Synchronization of Apple Mail, Calendar, and Contacts with Exchange Online on macOS is possible again.

Original message

Currently, in some cases, synchronization of Apple Mail, Calendar, and Contacts with Exchange Online on macOS is not possible. HM-IT is working to resolve the issue.

To access Exchange Online on macOS in the meantime, we recommend using Outlook for macOS: https://www.microsoft.com/de-de/microsoft-365/outlook/outlook-for-mac?market=de

Background: Apple Mail, Calendar, and Contacts use the EWS protocol to connect to Exchange Online. As Microsoft had long announced, the protocol was shut down at the beginning of October. Apple has announced that, with a future update to macOS 27, these apps will be switched to the Microsoft Graph interface. Apple has not yet provided a date.

The use of EWS can be extended manually by having administrators add a corresponding allow list. HM-IT has taken these steps and has explicitly authorized Apple to continue using EWS.

Update 09 Oct 10:00: The disruption has been resolved and Easyroam can be used again as usual.

Update 06 Oct 13:30:

Unfortunately, the disruption has reoccurred: The Easyroam app is currently intermittently available. DFN is continuing to work on a solution. When we receive new information, we will update this notice again.

Update 05 Oct 16:40: The disruption has been resolved and Easyroam can be used again as usual.

Due to a disruption at DFN, it is currently not possible to create new certificates for Eduroam via the Easyroam app. As a result, people who are configuring Easyroam for the first time or need to renew their certificate are currently unable to connect to Eduroam.

At the moment, no outgoing calls to external phone numbers can be made.

The UCC client, desk phones, and the UCware smartphone app are affected.

Please use your mobile phones wherever possible.

We are working urgently on a solution and will inform you as soon as there are any updates.

We are performing a planned software upgrade on several core network switches. The maintenance work will take place from 14:00 to 15:00.

During this period, there may be occasional brief interruptions or restrictions to network connectivity.

Thank you for your understanding.

The monthly CMS update will take place on Wednesday, 23 September 2026, from 07:00 to 09:00. The CMS cannot be used during this period. From 09:00, you will be able to log in again as usual and make changes to the HM websites.

Important and extensive maintenance work; bbb cannot be used during this time.

LimeSurvey is being reinstalled. Until the new version is active, no new surveys can be created on the old system. Existing surveys can continue to be used.

Due to maintenance work, the system will be unavailable for hours at a time over the weekend.

The disruption has been resolved and the switches are back in operation.

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Currently, the power supply to several switches has failed. As a result, LAN/WLAN service in some areas of Buildings B and E is currently affected.

Building management has been notified and we will update this notice as soon as we know more.

Today, September 8, between 4:00 PM and approximately 7:00 PM, the telephone system will be unavailable due to maintenance work.

Affected: telephones, the UCC client/software, and the UCware smartphone app.

Due to a defect in a transformer, LAN/WLAN connectivity is currently affected in some areas of buildings B/E/R.

Colleagues from Facility Management and the Electrical Workshop are working on a solution.

Phone service is currently unavailable. We are updating the system and will be back online shortly.

The monthly CMS update will take place on Wednesday, 26 August 2026, from 07:00 to 09:00. The CMS cannot be used during this period. From 09:00 onwards, you can log in again as usual and make changes to the HM websites.

We are currently experiencing significant infrastructure issues. Our team is already working intensively on analyzing and resolving the disruptions.

We are carrying out a planned software upgrade on several central network switches. The maintenance work will take place from 17:00 to 18:00.

During this period, there may be occasional brief interruptions or restrictions to the network connection.

We ask for your understanding.

VIMP is being updated to a new version. During this time, you will unfortunately not be able to upload new videos. Estimated duration from 8:30 a.m. to 10:00 a.m.

Thank you for your patience!

Update: The search function is working again on all pages.

Due to a system migration, the search function (site-wide search) on the HM faculty websites may be unavailable all day on August 18.

On Monday, August 17, from 4:30 PM to 4:45 PM, we will be performing maintenance on the FORMCYCLE production environment. During this time, the system will be unavailable, so no work can be carried out in FORMCYCLE.

We will be performing a scheduled software upgrade on several core network switches. The maintenance will take place from 10:00 to 12:00.

During this period, there may be occasional brief interruptions or degradation of network connectivity.

We appreciate your understanding.

We will be performing a scheduled software upgrade on several core network switches. Maintenance will take place from 10:00 AM to 12:00 PM.

During this period, there may be occasional brief interruptions or reduced network connectivity.

We appreciate your understanding.

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:

1. Employees
2. Functional mailboxes
3. 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!

Update 16:55: The issue has been resolved.

Unfortunately, there are currently intermittent errors with SSO login. We are working on a fix.

Currently, due to an outage, it is not possible to log in via SAML or OIDC.

During the planned power outage from Wednesday, August 5, 4:00 p.m., to Thursday, August 6, approx. 3:00 p.m., no content will be updated on the HM websites. You can make changes to your content in the CMS during this period, but they will not be published until Thursday after 3:00 p.m.

HM IT is currently operating in minimal IT mode due to the planned power shutdown by Stadtwerke München during the period

from Wednesday, 05.08.26 at 4 p.m. to Thursday, 06.08.26 at approx. 3 p.m.

Minimal operation includes the following services:

• Authentication with university account & MFA (and thus access to external services such as Zoom, Outlook, BayernCollab & OneDrive)
• Telephony with UCware
• Door access with Salto (via token) and Zeus
• DHCP and DNS
• eduVPN
• Desigo
• Primuss

Note: During the power-off times, no IT operations will be possible at all in buildings B, E, R, and X (not even minimal operations).

At the end of September, the same restrictions will occur again. We will inform you again once the exact period has been set.

On Friday, August 7, from 11:00 to 12:00, we will update the FORMCYCLE staging (test) environment. During this time, the system will be unavailable, so no work can be performed in FORMCYCLE.

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.

Update 25.09.26 12:00 hrs:

As already communicated in the affected tickets: There have repeatedly been problems with door access via PCS readers in the past and again currently, leading to time-consuming repairs and considerable time investment and stress for everyone involved. The system is currently being replaced by Salto; over the next few weeks, all PCS readers will be replaced accordingly.

Given the effort and capacity constraints, we will unfortunately no longer be able to repair existing or new problems with the PCS readers themselves. However, problematic readers will be replaced with higher priority during the rollout.

Update 07.08.26 17:30 hrs:

Functionality has been restored for the majority of the malfunctioning PCS readers. However, several readers in Building R are still non-functional.

At present, due to a disruption, unfortunately the majority of the PCS readers are out of service, which means that access via them cannot be guaranteed. We are working on it and are actively seeking a solution.

On 7 August 2026, extensive maintenance and cleanup work will be carried out on the Moodle learning platform. For this reason, the system will not be accessible on that day. Please take this unavailability into account in your planning. After the work is completed, expected in the evening, the system will be available again as usual.

There is currently a disruption in the CMS module “Translation Studio.” Translations are not being transferred back into the CMS.

Only the automatic translation feature in the DachmarkePG project is affected. All other projects and functionalities in First Spirit are working as usual.

The provider has been informed and is working on a solution to the problem. We will notify you promptly.

Following the system update in the production environment, there is currently a disruption affecting FormCycle. Affected forms cannot be accessed at the moment, and data already entered cannot be submitted.

We are already working on a fix and will inform you immediately as soon as the issue has been resolved.

FormCycle forms in the production environment are expected to be unavailable until around 12:00.

Edit: The upgrade was completed successfully. FormCycle is accessible again.

We are working on resolving the issue!

Update: The issue has been resolved. It was caused by an incompatible outbound email configuration after the switch to Exchange Online.

The monthly CMS update will take place on Wednesday, 29 July 2026, from 07:00 to 09:00. The CMS cannot be used during this period. From 09:00, you can log in again as usual and make changes to the HM websites.

On July 28, our SSO service will be migrated to a different k8s cluster. During the migration phase, there may be brief interruptions to authentication, and existing sessions may be briefly lost.

We expect an impact between approximately 17:00 and 17:15.

Currently, there may be limitations when attempting to access the SALTO access control system. Users who authenticate via smartphone are affected. We are working on a solution and will keep you informed as soon as there is new information.

Update 26.07 - 16:00:

As announced, yesterday at noon (25.07 - 12:00 CEST) HARICA revoked all affected certificates and added them to the corresponding CRLs.

Depending on the browser, it may still take some time before the certificates are marked as invalid. If any certificate was overlooked, please contact the responsible administrator.

The PKI service will remain a proxy for Let’s Encrypt until the issues at HARICA have been fully resolved.

Update 23.07 - 10:00:

HM has quickly converted its own PKI portal into an ACME proxy for Let’s Encrypt. Renewals should now be possible again with minor limitations.

Original notice:

HARICA unfortunately has to revoke various certificates.

Affected: All SSL server certificates that were issued between 27.03.2026 and 20.07.2026 (inclusive) and do not include the AIA OCSP URI access method certificate extension.

This unfortunately also includes the SSL server certificates that were already replaced as part of HARICA’s revocation announcements last week.

The affected SSL server certificates will be revoked on 25.07.2026.

Not affected: User certificates, as well as server certificates that were issued up to 26.03.2026 and from 21.07.2026 (today), inclusive.

The background to this renewed round of revocations is that at the end of March 2026 HARICA removed the AIA OCSP URI access method certificate extension from the issued SSL server certificates, as announced at the beginning of the year, but unfortunately failed to update the CP/CPS document accordingly. Thus, in the period from 27.03.2026 to 20.07.2026, SSL server certificates were issued without the AIA OCSP URI access method certificate extension, even though according to the CP/CPS documents in force at the time this extension should have been included in these certificates. Therefore, revocation of the affected SSL server certificates is unfortunately unavoidable.

Please check, for the systems you manage, when the certificates were issued and replace them if necessary.

The API and portal are currently slow—we unfortunately have no control over this, as HARICA is currently experiencing long response times.

Due to maintenance work, there may be restrictions on phone service.

Currently, incoming external calls in call queues may be displayed incorrectly.

The caller’s number is shown with an additional leading zero.

Example: the number 00172 1234 5678 is incorrectly displayed as 000172 1234 5678.

We are working on a solution and will inform you as soon as there are updates.

Due to maintenance work, there may be restrictions affecting telephone service.

Please switch to mobile phones wherever possible during this time.

Update: The issue in the CMS module “Translation Studio” has been resolved. Translations can once again be carried out as normal.

Original message: Since yesterday’s update, there has been an issue in the CMS module “Translation Studio”. Translations are not being written back to the CMS.

Only the automatic translation function in the DachmarkePG project is affected. All other projects and functionalities in First Spirit are working as usual.

The vendor has been notified and is working on a solution to the problem. We will notify you promptly.

The monthly CMS update will take place on Wednesday, 1 July 2026, from 07:00 to 09:00. The CMS cannot be used during this period. From 09:00 onwards, you can log in again as usual and make changes to the HM websites.

Update 29.06.226 · 16:11 hrs

The services are now available again as usual.

Update 29.06.26 · 08:45 hrs

The air conditioning was put back into operation by Building Management.

The affected services are currently being restored step by step. Please note that there may still be intermittent limitations over the course of the day.

Original notice 27.06.26 · 19:02 hrs

The failure of the air conditioning in the R Building unfortunately forces us to shut down the majority of our IT services. Please also expect restrictions and performance degradation on the other services due to reduced system performance.

Together with Building Management, we are working intensively on a solution.

We will keep you informed here about further developments.

HM Central IT regrets the inconvenience caused!

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

Unfortunately, there are currently restrictions on access to our Moodle system. Together with our service provider, we strive to resolve the problems quickly.

The problem is under investigation.

The FAMOS building management system is currently not available. Central IT supports the colleagues of the building management in resolving the problem as quickly as possible.

Due to a failed automated security update during the night from Wednesday, 3 June to Thursday, 4 June, logging in was not possible between approximately 1:00 AM and 5:30 AM. The disruption was resolved manually and the update was rolled back.

The issue will be investigated afterwards, and configurations will be adjusted so that comparable updates are automatically rolled back in the event of an error.

The monthly CMS update will take place on Wednesday, June 3, 2026, from 07:00 to 09:00. The CMS will be unavailable during this period. From 09:00, you can log in again as usual and make changes to the HM websites.

For about an hour now we have been experiencing a network issue. We are currently working to resolve the problem. As a result, anyone who newly connects to the Q-Bau LAN will not have network access; if you are affected, please use the Wi-Fi instead. The issue is known and we are working urgently on a solution. Thank you for your understanding.

The Moodle platform is fully operational again.

Error in automatic certificate monitoring.

Due to maintenance required on short notice, moodle.hm.edu will be unavailable on 26 May from approximately 6:00 a.m. to approximately 12:00 noon.

We are working to resolve the problem as quickly as possible.

New PILOS frontend

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.

The monthly CMS update will take place on Wednesday, 06.05.2026, from 07:00 to 09:00. The CMS cannot be used during this period. From 09:00 you can log in again as usual and make changes to the HM websites.

Planned Update

Update to a new version.

The monthly CMS update will take place on Wednesday, 08.04.2026, from 07:00 to 09:00. The CMS cannot be used during this period. From 09:00, you can log in as usual and make changes to the HM websites.

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.

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.

The moodle-p.hm.edu server will be archived and updated between March 30, 2026 and April 7, 2026. It will therefore be unavailable.

Update: The template update has been completed. You can resume using the application as usual. You can find further information in the info email and at https://collab.dvb.bayern/x/TJ9mJ

*****

As part of a planned Matoma template update, the templates in all accounts will be revised and new versions will be made available.

After the update, mailings based on old templates (either from drafts or the archive) can no longer be used. All Matoma users will be informed about this separately.

During the affected period, February 23–27, please work in your Matoma account only after prior consultation with us.

There may be disruptions on this day. Please try again later.

Due to maintenance, phone calls are currently unavailable.

This affects desk phones, UCC clients, and the UCware smartphone app.

The work is expected to continue until approximately 6:30 PM.

Currently, our FormCycle frontend server is unavailable.

The monthly CMS update will take place on Wednesday, 11 March 2026, from 07:00 to 09:00. The CMS cannot be used during this period. Starting at 09:00, you can log in again as usual and make changes to the HM websites.

Update: 16:30: The disruption has been resolved

As part of the rollout of 802.1X, there is a disruption to LAN access on the 3rd floor of the Q Building

On March 4, minor maintenance work will be carried out on the eduMFA cluster between 6:45 and approximately 7:30. This may result in brief interruptions in the authentication process.

Please excuse the inconvenience.

We will be performing a planned software upgrade on several key switches. Maintenance is scheduled from 17:00 to 18:00. During this period, there may be brief interruptions or limitations in network services. We appreciate your understanding.

On 19 February 2026, between 06:30 and approximately 08:00, various maintenance work will be carried out on HM’s central firewall cluster. Despite multiple redundancies, brief connection interruptions may occur. We are working to keep the outages to an absolute minimum.

We will be performing a planned software upgrade on several key switches. Maintenance is scheduled from 17:00 to 18:00. During this period, there may be brief interruptions or limitations on the network. Thank you for your understanding.

We are performing a planned software upgrade on some key switches. Maintenance is scheduled from 17:00 to 18:00. During this period, there may be brief interruptions or limitations in the network. Thank you for your understanding.

Update: We have corrected the faulty setting. Login should be working again.

Original message: Due to an unclear configuration error, there are problems signing in to certain FormCycle forms. We are working on a fix.

Update: The issue has been resolved. Matoma is working again as intended.

Due to an expired certificate, there is currently a disruption in the Matoma bulk email tool. Links in mailings/newsletters cannot be opened, and images in mailings and in the tool itself are not displayed.

We have already contacted the provider and hope to be able to resolve the issue soon.

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.

1. In Outlook, go to File > Options > Advanced.
2. 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

There is currently a disruption in the Element/Matrix chat service. Work is underway to resolve the problem.

UPDATE: Resolved

Update Jan 31, 2026: The issue has been fixed

Original message Jan 30, 2026: Unfortunately, there are restrictions on video access

Update 19:00: The issue has been resolved. We will continue to monitor the service.

Original report 15:23: Limited availability: Since January 29, 2026 at 09:00, streaming has been experiencing intermittent issues. We are already working on a fix. Thank you for your patience.

Dear colleagues,

You can log in to FirstSpirit again!

Background: The FirstSpirit provider Crownpeak had reported a general disruption affecting logins to the CMS cloud. Logging in was not possible.

You can also find the latest information directly from the provider: https://firstspiritstatus.crownpeak.com/

The “Baukasten” was not affected by this disruption.

Update 10:00: The incident has been resolved.

Update 18:45: The error was identified in a database and fixed. A reindexing of the videos is currently underway. This process will likely run through the night.

Original notice 13:00: Limited availability: Since 09:00 on January 22, 2026, there have been occasional disruptions with streaming. We are already working on a solution. Thank you for your patience.

Due to a misconfiguration, there were issues with internal requests to the IDM between January 15, 2026 at approximately 20:30 and January 16, 2026 at approximately 07:00.

As a result, processing of certain user changes was delayed.

Normal user authentication via Shibboleth/SSO was not affected.

Outage: The entire recursive DNS service at LRZ was down on January 14, 2026, from 09:10 to 09:30.

Update: The issue has been resolved.

Currently, logging in to eduroam is disrupted. Existing connections are not affected.

We are currently working to identify and fix the issue.

Update 09:40: The issue has been resolved and a fix has been implemented. We are monitoring the database’s behavior and will take further measures if needed.

Original message: As a direct consequence, there may also be problems with Salto permissions linked to the digital ID.

Security updates have been installed.

Last night, the Mediapool deployment was aborted before all images were synchronized with the web server. As a result, some images are currently missing from your websites. The issue has since been identified, and the missing images should be live again after the regular nightly Full Deployment in the morning, provided the issue does not recur. The overall performance of the CMS is back to normal, and all projects can be edited without any problems.

The Matomo server is being migrated and will be shut down at 4 p.m. After two to four hours, Matomo should be up and running again.

Outage: Confluence has been unavailable since 9:10 AM on December 2, 2025.

Resolution of the telephony quality issues that have existed since November 18, 2025, 3:40 p.m.

Thanks to our targeted optimization measures in collaboration with an external service provider, we were able to improve all systems associated with telephony so that you once again have access to a high-quality telephone connection.

If further disruptions occur, these are often not attributable to the telephone system itself. Rather, they frequently arise from individual usage scenarios, such as connection issues with Wi-Fi in the home office or problems with volume control, e.g., on the monitor. We therefore recommend checking your local environment.

If you still need support, please create a ticket in the Service Desk and describe the details of your environment: place of work (office or home office), device used (phone/PC), exact time of the incident, and whether it was an internal or external call.

Thank you for your patience and understanding.