Hey thanks for the reply!

Yeah I read the same about internal maven libraries, but I'm not sure what "internal" means in this context. If I try to resolve the repository URL using user:token locally it authenticates perfectly fine from a public address.

The problem is that the error given by Databricks is the same even when you remove the user:token from the URL so you don't get any feedback what's going wrong.

Your idea is indeed also a possible solution but it's similar to putting it on ADLS and installing from there.