Unplayable! Please help!

Hi im repeatedly experiencing a bug that claims a deck is not valid (that should be valid) and am uncertain why i would be getting this message. (On windows 10)

This happens whether or not I build a new deck in standard or wild. (For example, a wild deck built in wild format, with 30 cards should not raise an error when searching for a wild opponent, but it is). The exact error message i get is “Error: The selected deck is not valid for this game mode”. I would upload screenshots to clarify, but that option doesn’t seem to be here.

Hearthstone should be up to date with updates, just updated this afternoon, but I did take a break since last December (roughly), so its possible that the error has to do with updates not installing properly. If that is the case how do i correct this?

Just remake the deck from scratch and it will go away.

Screenshot instructions are right above your post: