Window 10 Backup Error - Specified backup disk cannot be found - Microsoft Community

window 10 backup error - specified backup disk cannot found 0x80780081

windows 10 professional creator version 1703 os build 15063.138

network: gige ethernet, \\synologydiskstation\diskshare

backup device: synology disk station

backup software: windows 10 native backup program

i alternate using either usb drive or unc path backup synology disk station.  have been using process years.  usb backups work great.  unc backup to synology worked great until upgraded window 10 creator update 2 weeks ago. 

i can read, write , delete files on the synology drive using unc path or drive mapping. 

there no existing backups software trying overwrite.

i believe has windows 10 creator update.

hello,

see if fix helps you:

https://www.kapilarya.com/there-was-a-failure-in-preparing-the-backup-image-of-one-of-the-volumes-in-the-backup-set

keep posted, luck!

Windows / Windows 10 / Windows update, recovery, & backup / PC