Is the computer in question connected to the Internet, and if so, is the Internet connection working correctly?
It is possible that Adobe Reader tries to check for updates when it is launched, then finds a faulty network connection.
Check the Device Manager for non-functioning network devices.
Also try http://fixitcenter.support.microsoft.com/ to find other potential problems on that system.
Thank you for your suggestions. I know the internet connection is working correctly but I will verify and explore the other suggestions as well.
If any one has any other suggestions please keep them coming. I will update on the progress and supply the answer when I get it.
Thanks in advance,
ShellExecute() function returns the value 31 if there is no association for the specified file type or if there is no association for the specified action within the file type.
Check the registry settings for the HKLM\PDFFile\shell\open\command and check if this is present.
(the PDFFile part might be slightly different)
Through more trouble shooting the company IT determined that it was the version of adobe reader installed on the computer that caused this issue. Chaning the verion of adobe reader solved the problem. The file assoication was correct. I will post what version caused the issue and what version was used as a fix.
Thank you all for you help, it was greatly appreciated.