I see threads on this going back 3 years and no solutions on hand to try. I've completely turned off Windows Firewall, Avast and Ad-Aware are turned off. Port 80 is open. I can physically copy and paste the URL it gives me in the error message and pull up the .epub file. Heck, I can read the whole thing from my computer if I want! There is NOTHING blocking Adobe. But Adobe keeps saying theres a network error! I've had a Kobo for 3 days, and I'd really love to use it, but I can't, because Adobe says I can't. Why hasn't this error been fixed? If its fixed, why can't I find an answer? Adobe Support told me that the Kobo isn't supported... buuut, the link he sent as proof showed that the Kobo is, in fact, a supported device. Oh, and he closed my ticket without fixing the issue. Fantastic. So, what now?
Since buying my e-reader last October I have only been able to download and read ONE book. ADE is pathetic. I have given up with the e-reader and bought an i-pad which doesn`t rely on ADE to enable you to download and read books. I can now purchase a book and download it instantly to my i-pad. I wasted hours and hours contacting ADE and they never did fix my problems. I would definately NOT recommend them. Sorry I can`t help with your problem.
Man, thats depressing... Really wishing I had gone with the Kindle at this point, but Adobe works just fine on my fiance's laptop in the next room. I absolutely cannot figure out whats blocking my PC!