Support chat were unable to assist and asked me to post here.
We have recently re-imaged out workstations and re-installed Digital Editions 4.5.
When we try to authorise the computer we get the E_ACT_TOO_MANY_ACTIVATIONS error message, but we can't un-authorise as those workstations have been re-imaged.
Online help requests that we contact Adobe to reset the Adobe ID, but contacting Adobe takes you to online chat and online chat says "I will request you to visit Forums.Adobe.com because there is no support over here for this particular issue.". I'm therefore posting on this forum...
Also you appear to have to authorise for every user on a workstation rather than the whole PC, is this correct?