During the Ax 2012 data upgrade, after providing connection details to Ax2012 SQL Server, the migration tool closed and I received the following error message in the log file.
2025-08-17 13:15:09.261 -02:00 [Information] Reading version check query started.
2025-08-17 13:15:12.199 -02:00 [Information] Executing the version check completed.
2025-08-07 13:15:12.199 -02:00 [Error] There is no row at position 0.
System.IndexOutOfRangeException: There is no row at position 0. at System.Data.RBTree`1.GetNodeByIndex(Int32 userIndex) at Microsoft.Dynamics.Servicing.DataUpgrade.AxConsoleApp.MenuHelper.
<EnvironmentSetup>d__17.MoveNext() in C:\__w\1\s\src\Migration.AxConsoleApp\Microsoft.Dynamics.Migration.AxConsoleApp\MenuHelper.
I spent some time understanding what had happened and was able to solve the problem by restarting the SQL and AOS services.
