When searching for the apps for these outdated systems, one can often find the apps available for both Pocket PC and Windows Mobile, with minimal or no changes between platforms. Sometimes there is a version for WinCE, but often there isn't.
All three of the platforms share the same standard distribution format, which is .CABs packaged in a strange way. And indeed when attempting to install a PPC / WinMobile app onto a WinCE machine, the app often installs and works successfully. But sometimes, it refuses to get installed whatsoever. And what's worse, the installer may corrupt the .CAB file
How can one force-install a Pocket PC (PPC) and Windows Mobile (WM, WinMobile) .CAB apps onto Windows CE (WinCE)?