You cannot run the native Hyper-V role on the 32-bit host. The hypervisor requires 64-bit extensions (SLAT). If you wanted virtualization, you had to install Virtual PC 2007 or Virtual Server 2005 R2 (SP1 only). Both were terrible compared to modern hypervisors.
If you are reading this because you just inherited a dinosaur, here is your battle plan: windows 2008 32 bit
The Legacy Lab Date: April 14, 2026
Do you have a FoxPro 2.6 app from 1994? A 16-bit ODBC driver for an old AS/400? A custom C++ app compiled with Visual C++ 1.52? Windows Server 2008 32-bit runs them perfectly. Windows Server 2008 R2 (64-bit) does not. It throws a "Invalid Win32 Application" error immediately. You cannot run the native Hyper-V role on the 32-bit host