I’ve been playing .MOV videos on Windows for about 20 years with whatever default program was provided. Now Windows 10 won’t play .MOV files taken before Sept 2010. But it plays .MOV files taken after Sept 2010. The default app is Movies & TV, which displays a “Can’t play: 0xc00d6d60” message. I don’t think the date is the key. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.