Backup not complete

Have a 1TB My Passport external drive with Windows 10. Tried backing up files only to find 1 file didn’t backup. UPPS.bin I made sure my WD was completely updated which it was. This is the second time this file would not backup. Any clues??


Is this file a system file, or is it related to a specific software?

Dont know what file it is. After backing up the WD Passport says the file was not backed up. Why I dont know.

I too have this problem of file UPPS.bin not backing up. Does any one know why?
Is this a hardware problem or a system problem?