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Dynamics 365 Community / Forums / Microsoft Dynamics 365 | Integration, Dataverse... / Unable to connect Dyna...
Microsoft Dynamics 365 | Integration, Dataverse...
Suggested Answer

Unable to connect Dynamics online SQL server via SSMS - version 22.3.2

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Posted on by CU24072201-1 6
Trying to connect to Dynamics online SQL server via SSMS
Using MFA auth.
Related threads
 
I get this error
 
TITLE: Microsoft SQL Server Management Studio
------------------------------
Error connecting to 'sqlserver.FQDN.name,5558'.
------------------------------
ADDITIONAL INFORMATION:
Unable to cast object of type 'System.DBNull' to type 'System.String'. (Microsoft.SqlServer.ConnectionInfo)
------------------------------
BUTTONS:
OK
------------------------------
 
===================================
Error connecting to 'sqlserver.FQDN.name,5558'.
===================================
Unable to cast object of type 'System.DBNull' to type 'System.String'. (Microsoft.SqlServer.ConnectionInfo)
------------------------------
Program Location:
   at Microsoft.SqlServer.Management.Common.ServerInformation.GetServerInformation(IDbConnection sqlConnection, IDbDataAdapter dataAdapter, String serverVersionString)
   at Microsoft.SqlServer.Management.Common.ConnectionManager.GetServerInformation()
   at Microsoft.SqlServer.Management.Common.ConnectionManager.get_DatabaseEngineType()
   at Microsoft.SqlServer.Management.UI.VSIntegration.ObjectExplorer.SharedConnectionUtil.GetConnectionKeyName(SqlOlapConnectionInfoBase ci)
   at Microsoft.SqlServer.Management.UI.VSIntegration.ObjectExplorer.ConnectionCache.AddConnection(UIConnectionInfo connection)
   at Microsoft.SqlServer.Management.SqlStudio.Explorer.ObjectExplorerService.ConnectToServer(UIConnectionInfo connectionInfo, IDbConnection liveConnection, Boolean validateConnection)
Categories:
Dynamics 365 general
I have the same question (0)
  • André Arnaud de Calavon Profile Picture
    André Arnaud de Cal... 303,052 Super User 2026 Season 1 on at
    Can you tell us what Dynamics 365 application this question is related to? There are several different solutions in the Dynamics 365 family, like: Sales, Finance, Supply Chain Management, Project Operations, and Customer Insights.

    Are you trying to connect to a production environment or another type, like a sandbox?
  • Suggested answer
    ManoVerse Profile Picture
    ManoVerse 617 Super User 2026 Season 1 on at
    This is a known issue after upgrade,  multiple users reported it that after upgrading to 22.3 as i have seen on community thread, while the same orgs connect fine with SSMS 20. This Fix is pending for release as per latest update on Feb 25th. Refer the below link for latest update for this.
     
    Regards,
    Manoj
    ✅If this answer helped you, please consider marking it as Verified, it really helps others in community
     
     
     
     

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