Dynamics NAV - You do not have access to microsoft dynamics nav. Verify that you have been setup as a valid user in Microsoft Dynamics NAV.

Issue:
You get this error even after setting up the new users and giving SUPER permissions.


Cause:
The new user auto-generates default connection information in the ClientUserSettings file and attempt to connect to the original default instance and database.
If this instance is offline, it gets stuck trying to always connect to something that does not exist

Solution:
Change default connection string on nav shortcut

• Navigate to C:\Users\<user>\AppData\Roaming\Microsoft\Microsoft Dynamics NAV\71
• Open ClientUserSettings in notepad
• Look for     <add key="ClientServicesPort" value="7046"/>
• Change it to the port of the instance you are trying to connect to
• Look for      <add key="ServerInstance" value="DynamicsNAV71"/>
• Change it to the name of the instance you are trying to connect to

OR

Windows user link to the nav account has been broken due to server migration or upgrade.
From user account, re-select windows account to re-link to new windows id