Running both NAV 2013 and 2013 R2 simultaneously on one machine


I have installed both Nav 2013 and 2013 R2 on my pc. Services of both versions are running.

Nav 2013 R2 running fine

But when i run the client for Nav 2013 , i checked in event viewer i got an error

"Cannot open database “Demo Database (7-0)” requested by the login. The login failed.

Login failed for user ‘NT AUTHORITY\NETWORK SERVICE’."

But the service of Nav 2013 R2 is also using the same account and is running properly then why cant Nav 2013 service run with this account…

suggestions please to solve this problem…


Read MSDN Blog.