FAQ (2FA)

What should I do if I encounter a problem with authentication?

If you do not receive a push notification on your cell phone, please check whether your cell phone is in sleep mode or airplane mode. Push notifications are not sent in these modes. Simply open the app and see if you can authenticate yourself there.

Also, make sure your phone has mobile data, otherwise the Duo app will not work.

What should I do if I've locked myself out of Duo?

To be unlocked, you need to go to the IT Service Desk with a valid ID. The staff will then unlock your account.

How does the transfer to a new mobile device work?

If you have the option (such as with a Google Pixel) to easily transfer your data to the new mobile device (and you're also keeping your SIM card), all you need to do is launch the app on the new device and follow the prompts. Your account will be transferred automatically.

Otherwise, don't uninstall the DUO app on your old mobile device right away. In the settings, there's an option called "Mit neeuem Telefon verbinden" that allows you to generate a QR code.

Finally, you can also perform a new onboarding process for the device. To do this (similar to the first time), log in to OWA and, on the OWA screen (after entering your username/password), select "Weitere Optionen" followed by "Geräte verwalten" If the phone number of the new device (i.e., the SIM card) remains the same, the old device will be overwritten.

Can I add multiple mobile devices to my 2FA account?

Yes, that's possible. See the instructions.

How can I set up a second TU BS account in the Duo app?

You cannot use one mobile number for two accounts. Simply select the "Tablet verwenden" option and follow the steps. Then you can set up the second TU BS account in the Duo app.

How can I access my second mobile device?

If you have registered multiple mobile devices and want to access the one listed second, for example, you can enter <password> followed by <push2> in the VPN password field. <push2> represents the second element. To see which phone is listed where, log in to OWA and click on "weitere Optionen" where the second factor is requested.

For OWA or SSO, you can go to [Weitere Optionen] and select the desired device.

How can I install the desktop application on Linux devices?

Unfortunately, this is not currently possible.

Does the application collect anonymized user data?

No anonymized user data is collected in the application; this feature has been disabled.

Can i connect to VPN via a second Factor?

Yes it's now possbile to connect to VPN with a one time login via SSO, more here .