Assuming the package associated with GUID b78b8e95-9e46-4f7a-9d1d-f64477bb7326 exists on a target Windows 7 x64 machine:
When an IT administrator sees this GUID, it often corresponds to a specific SP1 standalone installer hash. The original SHA-1 of the official windows6.1-KB976932-X64.exe is different from this GUID. Therefore, b78b8e95... is likely: Critical : A 32-bit SP1 package will not
The x64 architecture (64-bit) is distinct from x86 (32-bit). For Windows 7 SP1: System and Security >
Critical: A 32-bit SP1 package will not install on a 64-bit system, and vice versa. Always verify your system type under Control Panel > System and Security > System (look for “System type: 64-bit Operating System”). Critical : A 32-bit SP1 package will not