Can not delete folder / 0x80070091

I have this old Frostwire folder I would like to delete, but every time I try and open the folder I get this message "The file or directory is corrupted and unreadable"..
When I try to delete the file I get this message:

"An unexpected error is preventing the operation. Make a note of this error
code, which might be useful if you get additional help to resolve this
problem.
Error 0x80070091: The directory is not empty."

Any help would be greatly appreciated..

usually this error will come, if the destination location is too long. I mean the path of the folder is too long otherwise the folder contains unexpected characters as a folder name or file name. If this is your case, rename the file as simple like 12, inside the folder and try to delete.

Also check this link Common file and registry virtualization issues in Windows Vista

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