Hi All,
This self answered post but thought worth while leaving answer on the internet
After installing Cobian and running the backup received following error:
ERR Couldn't contact the Volume Shadow Copy requester. Please check that the service is installed and running
Our server is on windows server 2008 r2
Tried reinstalling the service, tried making service run as local and domain admin and still service wouldn't start.
Then found the solution.
Install .net framework 3.5 onto the server (done via the server manager featuresadd feature)
Once this was installed, went back into the Cobian backup, options menu and selected services/applications control and clicked start service, service then started successfully :) )
Hope this helps someone looking for an answer like myself in past.