While doing some development in new Microsoft Dynamics AX , while adding a field in a Data entity ,during synchronization I got below error :
Error Cannot open database “AXDBRain” requested by the login. The login failed.
Login failed for user ‘xxxxxxx-xxxxxxxx’. when try to connect to business database with provided configuration.
This error was misleading , because AXDBRain is not the correct DB which my AX is connected with.
Go to C:UsersuseridDocumentsVisual Studio 2015SettingsDefaultConfig.XML
and change the following :
Save the file.
Restart VS and try to do Sync again , hopefully this will help to sync.