Cause of the Malfunction Still Not Resolved
Even though most of the services are up and running again, the root cause of the problem has not been resolved. We are continuing to work behind the scenes to fix the issue. However, this also means that disruptions may still occur.
The work has been completed, and the issue has been successfully resolved.
Outage Affecting Most Services
To resolve the current issues, maintenance work will be performed today between 4:30 p.m. and 5:30 p.m. During this time, there will be a service interruption affecting most of the services at RWTH for approximately 10 minutes. Please take this last-minute announcement into account when planning your work.
The work has been completed, and the issue has been successfully resolved.
RWTH Single Sign-On Disrupted
Login via RWTH Single Sign-On (SSO) is currently disrupted. As a result, it is not possible to log in to any connected services.
There is currently a widespread disruption affecting, among other things, the SSO, though not limited to it. The root cause analysis is still underway.
Most of the services are currently up and running again. The analysis is ongoing. We cannot rule out the possibility of further outages.
Most of the services are up and running again. Please note, however, that the underlying issue has not yet been resolved, and disruptions may therefore continue to occur.
Explanation Following the Outage:
On June 22, 2026, starting at 9:00 a.m., there was a widespread outage affecting our services, which primarily impacted the RWTH Single Sign-On but was not limited to it. By around 12:00 p.m., the situation had largely stabilized, allowing users to log in via RWTH Single Sign-On again; however, other issues (e.g., with the IT Center ticket tool and RWTHmoodle) persisted. On the same day, between 4:30 p.m. and 5:00 p.m., the data center firewall was rebooted, which resolved the remaining issues. The disruption was caused by problems with the data center core switch. To ensure a lasting improvement in the situation, maintenance on the affected system was successfully carried out on June 30, 2026.
RWTH Single Sign-On Disrupted
There may currently be issues logging in via RWTH Single Sign-On (SSO).
This is because a new certificate has been active in the metadata since 9:30 a.m. today.
The relevant department has been notified and is working with the system operators to resolve the issue.
Software Shop Changeover
The SoftwareOne software shop (interim shop) is now being replaced by a new software shop from Academic Software.
The changeover from the interim solution to the new software shop will take place on July 28, 2025.
On July 28, 2025, the A products (software provided centrally by the IT Center) will be deactivated in the interim shop. From July 29, 2025, these will only be available through the new software shop.
The interim shop for students will also be shut down on July 28, 2025. From July 29, 2025, students will also be able to purchase their software via the new software shop.
For further information on the new Software Store please consult the IT Center Help:
https:
help.itc.rwth-aachen.de/service/u7okrwv9h0s2/article/f859d2c091cb437eb9008e8099a98b80/
[Software Shop] Wartung - Bestellvorgang in dieser Zeit nicht möglich
Aufgrund einer Wartung ist in dieser Zeit kein Bestellvorgang möglich.
[Software Shop] Störung - Anmeldung für bestimmte Persononengruppen
Für manche Personengruppen ist die Anmeldung am Software Shop gestört und führt zu einem Fehler.
Wir arbeiten an einer Lösung
[Software Shop] Wartung MySQL-Datenbankservern des IT Centers
Wegen Wartungsarbeiten an den MySQL-Datenbankservern des IT Centers stehen unteranderem die RANF Anwendungen im genannten Zeitraum nicht zur Verfügung:
Die kann die Überprüfung des PSP Elements im Software Shop in dieser Zeit gestört sein.
Die Datenbank Wartung muss verlängert werden
Login via RWTH Single Sign-On not working
There are currently disruptions to RWTH Single Sign-On. After entering your login details, the screen loads and then an Internal Server Error appears. This affects all services that use the RWTH Single Sign-On login.
The specialist department has been informed and is working to resolve the issue.
The problem has been fixed.
Routing über neue XWiN-Router
During this period, the routing of the previous XWiN routers (Nexus 7700) will be switched to the new XWiN routers (Catalyst 9600). These routers are essential for RWTH's network connection. This changeover also requires the migration of the DFN connection, which is switched redundantly to Frankfurt and Hannover, and the RWTH firewall to the new systems.
There will be complete or partial outages of the external connection during the maintenance window. All RWTH services (e.g. VPN, email, RWTHonline, RWTHmoodle) will not be available during this period. The accessibility of services within the RWTH network will be temporarily unavailable due to limited DNS functionality.
Der Uplink nach Frankfurt wurde erfolgreich auf das neue System geschwenkt.
Umbau des Uplinks nach Hannover beginnt.
Uplink nach Hannover auf das neue System umgezogen.
BGP v4/v6 nach Frankfurt und Hannover sind nun über die neue Routern funktional.
Es stehen noch ein paar kleinere Nacharbeiten an.
Wartung ist abgeschlossen. Der Datenverkehr läuft nun vollständig über die neuen Router!
Problematik mit der Anbindung zur Physik identifiziert, Lösung erfolgt morgen früh.
Kurze SSO-Störung
This evening around 20:25 - 21:00 there was a performance low in the SSO service and was checked by the specialist department during this time. The problem has been solved and fast logins without waiting times are possible again.
Single sign-on and MFA mailfunction
At the moment, single sign-on and multi-factor authentication are sporadically disrupted. We are already working on a solution and ask for your patience.
Temporary Loss of Services Due to Defective Hardware
Due to problems with the load balancers (F5), the majority of services such as RWTHmoodle, RWTH Single Sign-On, RWTH E-Mail etc. and all services behind the RWTH Single Sign-On are disrupted.
A technician from the manufacturer has now also been called in to solve the problem.
The fault has been rectified. However, there may still be delays in delivery or receipt.
Short problems while using RWTH Single Sign-On
For a short period of time, there was an error while using RWTH Single Sign-On.
The problem has been solved.
Expired certificate
Due to the expired certificate for idm.rwth-aachen.de, no IdM applications and the applications that use RWTH Single Sign-On can be accessed.
We are working on a solution.
- An insecure connection message is displayed when calling up IdM applications.
- When calling up applications with access via RWTH Single Sign-On, a message about missing authorisations is displayed.
The certificate has been updated and the applications can be accessed again. Please delete the browser cache before accessing the pages again.