Windows plays previously downloaded .mov videos from Adobe stock. No issues with play back. Only today did this issue begin
Sent from my Verizon, Samsung Galaxy smartphone
Get Outlook for Android<>As @WendellaBee said, you are missing the CODEC. The CODEC is a piece of code (program) that tells your computer, how to decode the video and audio stream of that video. The file type .mov is only a container file, containing multiple differently coded videos.
APCH seems to be an Apple ProRes format. You should be able to playback this with VLC https://www.videolan.org/vlc/download-windows.html. I've also heard, that PotPlayer is able to play back this codec, but I've never used that one: https://potplayer.daum.net
Both programs are freeware.
You may also find in the Windows store the codec for the Microsoft player. And Apple offers the codec for Windows for "compatible applications": https://support.apple.com/kb/dl2033?locale=en_GB
As the Apple info is from 2020, you can try to import the asset into your video editor first, to see if the codec is supported by default, first to installing the Apple codec. If you use Adobe Premiere Pro, I would suggest, you ask in the forum for Premiere Pro, if you still have trouble after trying to import.
(Be careful when downloading from third party sites. Other sites may distribute malware instead of the correct codec, so try always only trusted sources.)