Webex

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.

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.

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.

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.

Due to the replacement of central switches in the data center at the Seffenter Weg and Wendlingweg locations, there may be brief outages of the services operated in the data center between 4 p.m. and 7 p.m., or 10 p.m. at the latest.

As a result, authentication for Wi-Fi and VPN will also be temporarily unavailable, meaning that logging into Wi-Fi (eduroam, RWTH institutes, RWTH devices) and all VPN areas may be temporarily disrupted.

The maintenance will also affect various IT Center services, which may also experience brief outages. This message has been extended to the affected services.

Die Wartung wurde erfolgreich beendet.

Currently, an error message may appear in the application after initial registration or re-registration with Webex.
“An error has occurred. The login service does not have a compatible way to respond to the requesting application. [...]”
“Error while processing SAML response”
“Hmmm...unfortunately, this page is not available”

If the error occurs after logging in, telephony via the telephone connection via Webex (softphone mode) cannot be carried out.
The chat and meeting functions are still available.
In special cases, logging in to the application may also be affected.

The specialist department has already been informed and is working hard to find a solution.

To temporarily resolve the issue, please use the following workaround:

• Open Webex
• Click on your initials/picture in the top left corner
• Select Help
• Select Status Check
• Select Reset Database Status in the bottom left corner

If this does not immediately resolve the issue, please repeat the process several times in succession.

As a further step in the analysis, we need to restart the entire Cisco telephone system.
This may result in calls being interrupted and telephones having to be re-registered.

The restart fixed the problem.

We have determined that not all of the certificates required for our new certification authority “HARICA” are available in some Windows operating systems.
If the “HARICA TLS RSA Root CA 2021” certificate is missing on your computer, services that operate with HARICA certificates will no longer function here. This affects telephony (softphone, Webex), for example.
To fix the problem, the “HARICA TLS RSA Root CA 2021” certificate must be installed on the affected computers.
The official certificate can be downloaded from the manufacturer at the following link:
https:
repo.harica.gr/certs/HARICA-TLS-Root-2021-RSA.der

RWTH Single Sign-On login ist not possible at the moment.
Existing sessions are not affected.
We are working on fixing the problem.

The problem has been solved.

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.

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.

Im Rahmen der Implementierung des Lifecycle Managements deaktivieren wir heute Accounts, die nach uns vorliegenden Angaben keine Gültigkeit mehr haben sollten.
Sollte ihr Account unberechtigt deaktiviert worden sein, melden Sie sich bitte beim ServiceDesk.

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.

Due to a brief disruption, there are various network and telephony failures at the RWTH. The reason for this is a fibre break in an uplink to Frankfurt.

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.

Aufgrund hoher Last auf der zentralen RWTH Firewall kam es zu erhöhten Latenzen, wodurch insbesondere Videokonferenzen gestört wurden. Durch die Deaktivierung ein paar nicht essenzieller Dienste konnte das Problem behoben werden. In Kürze ist eine Leistungssteigerung der Firewall geplant, um zukünftig genügend freie Ressourcen zu schaffen.

Erweiterung der Meldung auf die Queue Webex. Durch die Störung werden Echtzeitanwendungen wie Webex in Mitleidenschaft gezogen.

For a short period of time, there was an error while using RWTH Single Sign-On.
The problem has been solved.

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.

am 21.9.2024 startet unser neuer Wartungsvertrag im neuen Lizenzmodell von Cisco Webex. Wir vertrauen darauf, daß Cisco den Lizenzwechsel ausfallfrei absolviert.

Wegen einer Wartung des zugrundeliegenden Datenbankservers ist im Wartungszeitraum mit Ausfällen von Webdiensten zu rechnen:
* NOC-Portal (z.B. DNS-Admin, DHCP-Admin, RADIUS-Admin, Interface-Admin, WLAN Gäste einrichten)
* TK-Portal
* RA-Portal
Die Dienste laufen wie gewohnt weiter. Bitte versuchen Sie zu einem späteren Zeitpunkt Ihre gewünschten Änderungen einzutragen.

leider ist die Wartung noch nicht zum Abschluss gekommen, weswegen die Daten heute für ca 1h nicht zur Verfügung stehen.

Die Migration ist abgeschlossen