I have a file:
\\\\Computer1\\Share\\file.pdf
and I need to open in using a service running as the network service account on another compu
Yes.
If both servers are on the same domain then you can enable access to the share for Domain1\Computer2$
(where Computer2$
represents Network Service on Computer2).
If it were me, I'd use a domain account to run the service and grant that same domain account the appropriate permissions on the remote computer.
I don't like to claim this is the answer as whilst it would resolve the problem it doesn't address the question as asked - but it is the "right" solution, assuming that its possible to elect to run the service using something other the Network Service account...