Please download the CAT Tool from the CAT website. https://cat.eduroam.org/?idp=5916. Now open the file to start the installation.
Please click "Next" during the installation.
Please check now if you have selected the correct tool. There it says for member of Technical University of Dresden and confirm this with "OK".
Now enter yourZIHlogin@tu-dresden.de and the password twice (if you have set a WLAN password, use this instead). Then confirm with "Install". If you are asked whether you want to install the required certificate, agree by selecting the "Yes" button.
The installation is complete. You can click on "Finish" to close the window. The connection to the WLAN network will be established automatically after a short time.