Unable to load DLL ‘Microsoft.Data.SqlClient.SNI.x86.dll’ – Error Launching SSMS 19

Hi friends, in this short article, we will be discussing about, how you can resolve the following issue that might occur under certain circumstances, when launching SQL Server Management Studio (SSMS) 19.x: Unable to load DLL ‘Microsoft.Data.SqlClient.SNI.x86.dll’


The Error Message

The exact error message is the below:


Cannot connect to [instance name]


Unable to load DLL ‘Microsoft.Data.SqlClient.SNI.x86.dll’: The specified module could not be found. (Exception from HRESULT: 0x8007007E) (Microsoft.Data.SqlClient)


Possible Root Cause

The most likely root cause for the above error, is that you had previously installed SSMS 19 preview and you installed the newer version without first removing the preview version.



To resolve the issue, you can try the following actions:

  • Completely uninstall SSMS 19
    • Prior to that, make a backup of any user preferences
  • Reboot the computer
  • Install again the latest release of SSMS 19



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