1. The first-time registration for Duo is only possible via devices that are located on the UoC campus (not from home or on the road via VPN). If you meet this condition, first go to the website https://mfastart.uni-koeln.de.
2. Confirm the message that appears with "Okay" [Fig. 1].
3. You can change the language by clicking on the "EN" in the top right corner [Fig. 2].
4. Then log in with your user name and the corresponding password [Fig. 3].
5. Now click on "First steps" [Fig. 4] and select the "Duo Mobile" option [Fig. 5].
6. Regardless of the device you are using, please select "I have a tablet" [Fig. 6]. Your telephone number is not required and is therefore not stored.

You will now need the "Duo Mobile" app on your device for the next steps (see requirements). You can find these in the respective play or app stores.

Android: https: //play.google.com/store/apps/details?id=com.duosecurity.duomobile&hl=de

Apple: https: //apps.apple.com/us/app/duo-mobile/id422663827?mt=8

7. After successfully installing the "Duo Mobile" app, please tap on "Next" [Fig. 1].
8. Now select the option "Open Duo Mobile" [Fig. 2] and use it to open the "Duo Mobile" app. If necessary, confirm the browser message and click on "Open" [Fig. 3].
9. You have now connected your mobile device to your account as a second factor. Click on "Next" [Fig. 4].
10. Give this account a name and confirm this with "Save" [Fig. 5].
11. If you would like to practice using Cisco Duo, click on "Practice now", otherwise you can skip this point by clicking on "Skip" [Fig. 6].
12. We recommend allowing notifications in order to open the "Duo Mobile" app via a message and confirm your identity. Alternatively, you can always use the passcode that is displayed during authentication. If you do not want to allow notifications, you can skip this point [Fig. 7].
13. You can deactivate the collection of user data [Fig. 8] and confirm the message that appears with "OK" [Fig. 9].
14. The setup of a device for multi-factor authentication with Cisco Duo has now been successfully completed. Click "OK" to return to the login page [Fig. 10].