My Passport - Failure to Backup certain files

Backup seems to be running well with exception of several files that fail to backup. They come in two varieties: First are files that start with: KBXXXXXXXX.log.txt, the others are long strings of alphanumeric (maybe 50-60 characters) all of which are around 143KB. I have been unsuccessful trying to find these files on my hard drive (Using Windows Search). Anyone encountered these, or can shed some light on their location. I am running Windows 7, Service Pack 1.

Hello dhall7088,

You can have a look on below article to get details of files which were not backed up: