I found this amusing:
this is showing the amount of storage I have on a particular folder on a network drive. as shown on my windows 10 laptop.
considering the drive itself is only 4 terabyte I don't see how the folder can be taking up, 484 Petrabytes of disk space.
1 petabyte is 1024 terabytes.
found this reply to a similar situation on a Microsoft forum:
suggesting that it's possibly caused by a virus. personally I think it's more likely to be caused by a bug.