Hello everyone and thank you all for your efforts.
I am using Unity Hub, Unity2020.3.7f1 and Unity2021.3.4f1.
I am using Unity in our company’s proxy environment and I have a problem.
I was able to verify that PackageManager on Unity2020.3.7f works by setting the environment variables correctly.
However, PackageManager on Unity2021.3.4f1 is not working correctly, despite the same environment.
It will be loading forever as shown in the attached picture.(I waited for more than an hour.)
However, only MyAsset is available.
Can someone please help me?