Norton Security + Symantec System Recovery = Problems

Friends.
I get so tired when two products from the same manufacturer collide with each other.

In my case it is Norton Security by Symantec (version 22.1.0.9) and Symantec System Recovery 2013 R2 (version 11.1.0.53728) that do not like each other.

We had no problem when we ran Norton Internet Security, but since the change of the virus software problems have succeeded each other.

The backups are interrupted in the middle and sometimes not allowed at all.

We have set both the "Network Trust" and "Device Trust" - all to allow communication with our NAS (Drobo).

But still problems ...

We work with Windows 8.1 Pro 64-bit.
Does anyone have any suggestions?

Thanks for the help!

Johannes