tldr: If you need to reformat the SD card for the TAPO C200 on your computer, change the default format to NTFS.

The story.  I wanted to check the notifications on my C200 but there was nothing there.  The C200 wanted the card to be initialized which was odd because the card has been in there for some time,  When I tried to initialize it complained that it couldn't recognize the card and that it needed to be reformatted.

I reformatted the card on Windows 10 computer using the default (exFAT) and replaced the SD card.  No good.  C200 is still unhappy with the format.

The next step was trying to see if someone had a solution.  Everyone was saying FAT32, but that is for smaller drives, not 128gb SD cards.

This is when I went back to the format utility in Windows.  My other option was NTFS and it worked.