The bonnus search portal is occasionally unavailable The bonnus search portal is occasionally unavailable

Update: On June 18, we made some adjustments to the settings on our website. Please clear your cache and visit the USL homepage again: https://www.ulb.uni-bonn.de/en

Is the bonnus search portal still unavailable?

Please send us an email

We are currently unable to reproduce the error. Therefore, please help us by sending an email to bonnus-team@ulb.uni-bonn.de with the following information:

1. Which browser are you using (e.g., Chrome, Firefox, Safari)? Which version is installed?
2. What operating system are you using (e.g., Windows 11, macOS 14, Android, iOS)?
3. Are you using a desktop computer, laptop, tablet, or smartphone?
4. Which internet service provider or type of connection are you using to access the internet (e.g., Telekom, Vodafone, Wi-Fi, VPN, mobile data)?
5. Have you tried switching networks (for example, to mobile data)?
6. Can you access the following link to bonnus? 

Thank you very much for your help!