E_ADEPT_NO_TOKEN error

This problem appears to have no answer just suggestions that I use a different browser or contact the publisher.  Are there more suggestions?

Window 10 user.  The e-book works on my laptop but not my desktop.  Same error.  I have tried Chrome, IE and Firefox.  I have two files for the same book (the old from 2014) indicated  E_ADEPT_REQUEST_EXPIRED, and the new just receive from the publisher indicates that Error getting License,  License Server Communication Problem,  E_ADEPT_REQUEST_ NO_TOKEN error.

I have been working on this problem for several weeks and cannot find a solution,  help is appreciated.