Where can find the OBServer.Dll

Hi partners, I have this trouble, when I try to connect to SAP, I receive this message “Failed to Extract OBServer.dll from Cab File”, I don’t have this problem in my computer, the problem is when I try to run the program in another computer, I was read about a directory in Windows\Temp, that contains this dll, but I don’t know how can install this in the client computer…

I regard any help about this

Thanks