Hope someone can help, I'm having the same issue. Windows Vista, Mozilla Firefox.
"E_ADEPT_IO ActivationServiceInfo...", means that ADE could not contact the Adobe activation server (adeactivate.adobe.com). If you network is setup correctly and you can get to the server in the browser, then the next most likely problem is a firewall (McAffee, LittleSnitch, etc...) prevent ADE from getting outside network access.
OK. I turned off Avast. I turned off the firewall.Using the Install button on ADE page gave me:
Output folder: C:\Program Files\Adobe\Adobe Digital Editions
Download digitaleditions_win.zip to C:\Users\Cindy\AppData\Local\Temp
Download failed: connecting to host (it never connects)
So I manually installed ADE direct (from tech note kb403051). The program pops up for 1-3 seconds, then gives me E_ADEPT_IO ActivationServiceInfo
My problem is exactly the same as Cindy's. I even shut down my firewall and still no success. All other downloads (not Adobe) and other internet connections are fine.
I'm having the same problem. I installed ADE on my desktop with no problems, but can't get it to install on my laptop. I'm disappointed that Adobe hasn't done anything to answer this problem by now.
I have uninstalled a few times and downloaded, I finally called tech
support and they had to deacitvate the old account so i could activate again
When I had problems activating I called B&N support and they had me delete any files on Nook that had adobe digital on it