After uploading an extension the extension will not install

By trying to get the OpenID connection working I want to import this extension.

After downloading and importing the package by using the importer I got an spinning wheel that does not stop. Another package I have tried does show a screen to continue.

How can I got this one installed?

btw: I do not see an error in the console

Hi @Eelze,

What you are trying to import is a .jar file and it will not work. That import is designed for .XAR files.
You should use the Extensions menu to install the extension from a repository.
It is mentioned in https://extensions.xwiki.org/xwiki/bin/view/Extension/OpenID%20Connect/OpenID%20Connect%20Authenticator/#HPrerequisites26InstallationInstructions

Thanks. I will dive into that!

I know what went wrong. Because Indexing is not working, I did not see the extensions. But you can turnoff that you want to use the index. When I do that I see the items and could install it. Thanks