Memory card not deteced by mobile or computer.

[tnelligan]

I hav a SanDisk 32gb micro sd hd card and it has worked fine, but i just updated my Smasung Galaxy s7 Active to andriod 7 and now it says that it is not supported on my phone to format as portable storage but when i click to format it says command ‘7 volume partition **bleep**: 179,0 public’ failed with ‘400 7 Command failed’ and if i try and put it in my computer i get that it is in my devices and printers but i can not see the folder under file explorer