The Ghosts of Windows 3.1
The Philips CD-i was not a good system.
But for some bizarre reason, the folks at Tandy, the parent company of Radio Shack, apparently didn’t get the memo and thought that it was worth mimicking the CD-i model for all it was worth.
There seems to be evidence that Microsoft planned for Modular Windows to be used beyond Tandy’s devices. A 1992 InfoWorld article highlights the existence of a software development kit specifically for Modular Windows, which one would imagine Microsoft would not create for a single device that was already not selling well.
1994 The year that Microsoft released Windows 3.2.