While it is possible to run ProShow Producer on Windows 11, you are running unsupported software on a modern OS. There will be no security patches, no 64-bit optimization, and no HEIC/WebP image support.
Windows 11 handles audio through a new Unified Audio Stack (introduced in 22H2, refined since). ProShow’s audio engine was written for the Windows 7-era API. proshow producer windows 11
Windows 11's WDDM 3.0 driver model conflicts with ProShow’s old GPU renderer. While it is possible to run ProShow Producer