FIM Synchronization Service hotfix was not successfuly installed

Hi everyone,

I'm experiencing troubles while trying to upgrade FIM Synchronization by installing hot fixes.

My current version is (4.1.3114.0) and I need to go up to new hotfix (4.1.3613.0).

While installing the file (FIMSyncService_x64_KB3011057), I am getting this message :

" Forefront Identity Manager Synchronization Service was not successfully installed. To install  Forefront Identity Manager Synchronization Service, run this wizard again."

When I run it again, I get the same message.

I will be grateful if someone can help.

Thanks in advance.