I am having problems with installing SEP 11 on a Windows Vista Business edition. The complete installation goes well untill the last 10 secs. At once the installer tells me he is buy with ROLLING BACK TRANSACTION (or something like that). After that the install folder is cleared and the install will fail.

 

Tried to turn off UAC, Tried Managed and Unmanaged installs, Tried Silent and user installs, but nothing worked. Can somebody help me finding the right patch for this problem?

 

Thanks in advance