Does anyone know what this error is and how to fix it "Error 0x80070522: A required privilege is not held by the client."? I keep getting this error when I try and save anything to my flash drive and it never did it until a couple of weeks ago and I'm not sure why it started doing it to begin with. I tried changing all of the permissions under the security tab but it didn't do anything either. I am not wanting to format it because I have Windows 8 togo installed on it. Is there anyway of fixing this without having to format? Thanks in advance.

You mentioned this error occurs when you save stuff to your flash drive... does it also happen when you read stuff from it? If not, the obvious solution is to copy the drive's contents to a safe location on your disk, format, and then copy back the content into the drive, where it belongs. If a low-level format does not fix this, try booting into a Linux live-cd and try and reproduce the error - if it doesn't work, there could be something wrong with the flash drive's firmware, otherwise you've messed up permissions on Windows.

In any case, you want to narrow down the problem to better identify its source.