Windows 10 backup error

Hi, on windows 7 everything works but I have a problem with Windows 10, when it performs a manual copy, everything is ok, when the automatic backup settings program does not execute them and such a message.

run 12/20/2018 20:36:06 by SYSTEM
SqlBackupFree ()

Database PC1: Backup - Failure, FTP - Failure

12/20/2018 20:36:04 Creating backup of PC1 to C:\WINDOWS\TEMP
12/20/2018 20:36:05 ERROR: Backup of PC1 failed: The server principal “ZARZĄDZANIE NT\SYSTEM” is not able to access the database “PC1” under the current security context.
BACKUP DATABASE is terminating abnormally.
12/20/2018 20:36:05 Cleaning ftp://(IP)/test
12/20/2018 20:36:06 ERROR: Job finished (With Errors)<<<

Hi James_aaa,

Thanks for the details. Please find more details on how to resolve the issue at