WIll not backup outlook files

WD Software & Mobile Apps WD Software
1

My WD Backup program has started having a problem backing up one of my outlook .pst files. I have two outlook accounts, one backs up no problem, the other will not backup about 75% of the time, message just says cannot back up. Why is this happening? never happened until very recentlly.

2

Hi,

You could refer to the following link: Backup: Common Causes of Files Not Being Backed Up