In Control Panel, open Backup and Restore.
In the Backup section, click Change settings
In the Set up backup dialog box, click Next
In the What do you want to back up dialog box, click Let me choose
, and then click Next.
Expand Data Files, expand <your user name> Libraries.
Expand Additional Locations, and then click to clear the AppData folder, Contacts, and Searches check boxes.
Expand Computer, expand the item for your system drive (for example, expand Local Disk (C
Expand Users, expand <your user name>, and then click to select the AppData, Contacts, and Searches check boxes
if they exist.
Click Next, and then click Save settings and exit.
In Backup and Restore, click Back up now to perform a new backup. The backup operation should complete without errors.