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SSMS v17 - Object must implement IConvertible. (mscorlib)

When a query is selected with the mouse/keyboard, and then "Analyze Query in Database Engine Tuning Advisor" option in the context menu is selected the following error appears.

"The argument type 'server type = Sql, server name = KSHQ-DB, timeout = 30, database = KSH_Cloudcare, protocol = NotSpecified, workstation = , integrated security = True' cannot be converted into parameter type 'Microsoft.SqlServer.Management.Common.SqlConnectionInfo'. (mscorlib)
Object must implement IConvertible. (mscorlib)"

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    AdminMicrosoft SQL Server (Admin, Microsoft Azure) shared this idea  ·   ·  Flag idea as inappropriate…  ·  Admin →
    planned  ·  AdminMicrosoft SQL Server (Admin, Microsoft Azure) responded  · 

    This is a known issue and it is being fixed (probably in the next major release of SSMS).

    Aside from the workaround listed here (update the dtashell.exe.config), another “workaround” is to upgrade from a previous version of SSMS 17.x (e.g. going from 17.4 to 17.5): that has the nice side effect of fixing the dtashell.exe.config as well.

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