I have two Raspberry Pi computers which I put together maybe two years ago. These are small form-factor units a little bigger than a deck of cards. One is for mainly printing. The other is for file processing and playing videos. The program for videos used to work for playing MP4 files and it is name is VLC Media player. About six months ago it stopped playing correctly and just flickered and jumped when a file was played. I had to abort it every time because it wasn’t playing videos correctly.
Yesterday, I ran updates on the OS because I wanted to see what programs were out of date and there weren’t many. As I watched them scroll by during installation, one stood out: The VLC Media Player! After it was done, videos played again like they used to.
So if one of your programs stops working, an update may fix it,