Samsung S7 Edge won't play any videos since the last big update

[AC Question]

If I try to play any video in my photo gallery, it won't play and it says "Failed to play video. An unknown error has occurred." I've also not been able to play videos on Facebook, Snapchat, or YouTube. It won't load or gives me another error message. It seemed to have started after the last major update. Anyone else having this issue?

 

[B. Diddy]

Welcome to Android Central! Have you already tried wiping the cache partition? https://support.t-mobile.com/docs/DOC-24999. Does it happen in Safe Mode? https://support.t-mobile.com/docs/DOC-28008