Installing NAV 2015 Build 41779 using a 3 tier setup. Error occurs “Cannot establish a connection to the SQL Server/Database.”
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This article will guide you as how to avoid this error during installing NAV 2015 using a 3 Tier Setup:
Cannot establish a connection to the SQL Server/Database.
This could be caused by one of the following reasons:
- The SQL Server was not started
- The Database does not exist
- Proper permissions have not been given to the NAV Server Account
Here are the event viewer error logs:
This took me more than a day to solve. It was such a silly issue. I was logged on as a Local Administrator when i installed the SQL Database Components on the SQL Server. When i logged in as the Domain Administrator and reinstalled the SQL Database Components this resolved the issue.