You posted to the Creative Cloud forum, which is generally for issues with the Creative Cloud app or your subscription. But your issue should be directed to a specific program. Trouble is, you don't mention any program. Are you on Premiere Pro, After Effects, Premiere Elements? Are you using Adobe Media Encoder to export?
Also, please report exactly which version of the program you have and which operating system your computer is running.
Sorry, here are more details. I am running Premier CC on a Windows machine running windows 7. Everything is in sync in my timeline, but when I export (I'm using Encoder) the audio slips out of sync. I have tried to change some settings but I've never had this issue before. I am exporting a full length film of 136 min. This needs to be fixed! Help!
Exactly what are you editing, and what are your exact export settings?
Exactly what is INSIDE the video you are editing?
Codec & Format information, with 2 links inside for you to read http://forums.adobe.com/thread/1270588
Report back with the codec details of your file, use the programs below... A screen shot works well to SHOW people what you are doing
https://forums.adobe.com/thread/1070933 for screen shot instructions
Free programs to get file information for PC/Mac http://mediaarea.net/en/MediaInfo/Download
Also post a screen shot of your export screen