So i am running an On-Prem upgrade of our Dynamics CRM 2013 SP1 Install to 2015 within our Test environment and the Installer fails at its check for Database saying.
"Cannot open Database "MSCRM_OrgName_MSCRM" now the issue i notice straight away here is our database is is MSCRM_OrgName there is no _MSCRM at the end. Looking into the crmserversetup.log i can see it recognises the MSCRM_Config then recognises the MSCRM_OrgName connecting fine and returning the correct DB info. However at the point of connecting in for any further checks it seems t have renamed the database and is trying to connect to MSCRM_OrgName_MSCRM.
Checked Deployment Manager and that shows the correct information also, Google is not being very helpful at the moment so hoping someone can point me in the right direction.
I previously moved the SQL Database a few weeks ago to our new SQL Server using the below however this has been working fine since and i have checked all the changes made since and that looks to be right.