I tried to make a support case, but it is made so difficult these days, that it it was impossible. And the support address technical_support@help.dell.com works only oif it inckludes a valid case number. So I try it from here. Maybe someone from Dell/EMC can do anything about this:

I have tried to download this file:

https://dl.dell.com/downloads/85PJW_NetWorker-Runtime-Environment-(NRE)-file-for-Debian-Linux.deb

But it seems to be corrupted every time I do. The sha256  checksum does not match. And it seems it is different size depending on what browser or OS I use.