How are you connected to the internet? Are you behind a particularly secure corporate firewall? Are you on Mac or Windows? Do you have any anti-malware software running on your machine that may be preventing applications other than your browser from connecting to the internet?
Please delete the "MBLStore" and "OOBE" folders found in
on Mac: <yourusername>/Library/Application Support/Adobe
on Windows XP: <youruser>\Local Settings\Application Data\Adobe
on Windows 7: <youruser>\AppData\Local\Adobe
and delete the "AdobeMuse" folder found in
on Mac: <yourusername>/Library/Preferences
on Windows XP: <youruser>\Local Settings\
on Windows 7: <youruser>\AppData\Roaming
Then launch Muse. It will go through the first launch experience of asking for UI language, AdobeID, etc.
If there's no change in behavior, please send the PDApp.log file in
on Mac: <yourusername>/Library/Logs/PDApp.log
on Windows 7: <youruser>\AppData\Local\Temp
to email@example.com along with a link to this thread. Thanks.
It seems I have the same problem - but with other Adobe products and, little experienced I see no way to solve it with Zak's solution.
The difference I see is: I am not Using Adobe Muse but Adobe CS 4, LR 3 and since 2013/02/20 Creative Cloud CS6 30 Days test. Since downloading and installing CS6 from the cloud I can’t sign in to my personal account anymore – using Mozilla Firefox 19.0. I am using Windows 7 Home Premium.
Today after chatting with Adobe support, I was said to reset the password and use Internet Explorer instead of Mozilla Firefox. Doing so
Sign In worked just for one time and welcomed me by name. Next time the same problem - even with IE. I can't sign in again. Off course I'd prefer to internet with Firefox - but at least I should be able to sign in to my Adobe account.
By the way I was surprised right now when beeing able to sign in here though I thaught only to have one general Adobe account.
I would be very glad to get an answer and hopefully a solution thank ahead. In case this is not the right place to post my problem here I beg your pardon. I am not really familiar with the forum orientation. So I also need assistance in getting the know how of tracking the thread and finding the place to post (my) problem.
Meanwhile I got Help by Chris Tuller due to the following hints out of his last email:
The problem is that there are cookies set by adobe.com that are just too large. They shouldn’t be doing this and we are looking at fixing it.
In the meantime you should be able to fix it by deleting all of the cookies.
In Firefox you can press CTRL+SHIFT+DEL and deleting all of the cookies.
Let me know if that works and I’ll continue to work on the problem on this end.
This really was helpful and since following those steps (one time) now the "Sign In" works as imagined