Service: If you would like to exchange information easily within a department or working group, you can use our chat service Mattermost. A member of the department/working group can create a "team" in Mattermost and invite the other members to join.
Target Group: employees, students
Usage Costs: free of charges
T&C/ Privacy Policy:
T&C
Privacy Policy
Login: mattermost.uni-muenster.de
Contact: Hotline
On July 1st 2025 the login procedure of Mattermost was changed.
If you have not switched your account yourself, you are currently not able to log in. In order to fix this problem, please visit the IT portal and set a new university password by navigating to "Passwords and PINs" - "Re-set passwords/PINs". You can enter your current university password as your new university password. If you click on "Set new passwords/PINs", the newly set university password will be transmitted to our systems, including Mattermost. Afterwards, you will receive an automatically generated e-mail from Mattermost that your password for Uni Münster Mattermost hast been changed.
If you do not have an account yet, please have a look at the answer to the fequently asked question "I'm new to Mattermost. How do I create an account?".
Frequently asked questions are answered below.
Yes!
None of your direct messages, channels, boards and playbooks will be changed. It is just the login method that will be switched, i.e. the way the Mattermost server checks if you are allowed to access this data will differ.
As before, please use your university ID to login to Mattermost. Even though it might have been stated otherwise during the process of switching the login method, Mattermost does NOT ask you for your mail address to sign in.
If you are already using your university ID, but are still unable login to Mattermost, there must be a problem with your password. Please follow the steps described at "What will happen, if I forget the password that I set in Mattermost?"
Please set a new university password: Log in to the IT portal, go to "Passwords and PINs">"Re-set passwords/PINs"-"New university password". After a short period of time this new password will also be transferred to Mattermost.
If you cannot access the IT portal itself, please visit our lost-credentials-website (it.uni.ms/en/passwortvergessen).
If you are still logged in to Mattermost, you have a so called session open. This session will not be closed automatically, when we switch the login method for all users. Therefore, you might be able to still use Mattermost even after July 1st. When your session has expired though, you will have to visit the IT-Portal, go to "Passwords and PINs"-"Re-set passwords/PINs"-"New university password" and set a new university password. After a short period of time this new password will also be transferred to Mattermost and you will be able to login to Mattermost again using your university ID and university password.
If you cannot access the IT portal itself, please visit our lost-credentials-website (it.uni.ms/en/passwortvergessen).
It is possible that you have not reset your university password in a while. Mattermost requires a password to have:
Visit the IT-Portal, select "Chat (Mattermost)"-"Activate" and follow the dialogue. A short while after you have finished this process you will be able to use your new account with the website mattermost.uni-muenster.de or the app for your operating system (manuals here).
If you are using Mattermost for the first time, you have to activate it once: Visit the IT-Portal, select "Chat (Mattermost)"-"Activate" and follow the dialogue.