SQL Server Migration Assistant (SSMA) for DB2 v10.5 - crash with "Exception: Win32 handle that was passed to Icon is not valid or is the wrong type."

ssma_20260312_082644.log

Is that the correct log file? It seems to be from March and for version 10.4, but your title talks about 10.5.

Oops - wrong log file, and I'm getting an upload error when trying to upload the correct one. Perhaps it is too large.
Below is the bottom portion of the log containing the error:

[Error: Gui] [38264/3] [2026-07-21 17:14:42]: Exception: Operation canceled.

site: Void SetSourceConnectionInfo(Microsoft.SSMA.Framework.Generic.DataMigrators.IDataMigrationContext, Microsoft.SSMA.Framework.Generic.DataMigrators.Default.DataMigrationState)

source: Microsoft.SSMA.Framework.Db2Mf.SqlServer

at Microsoft.SSMA.Framework.Db2Mf.SqlServer.DataMigration.Db2Mf2SqlServerDataMigrator.SetSourceConnectionInfo(IDataMigrationContext context, DataMigrationState state)

at Microsoft.SSMA.Framework.Db2Mf.SqlServer.DataMigration.Db2Mf2SqlServerDataMigrator.CreateDataMigrationState(IDataMigrationContext context, XNode subtree)

at Microsoft.SSMA.Framework.Generic.DataMigrators.Default.DefaultTreeDataMigrator`1.DoMigrateData(IDataMigrationContext context, XNode subtree)

at Microsoft.SSMA.Framework.Db2Mf.SqlServer.DataMigration.Db2Mf2SqlServerDataMigrator.DoMigrateData(IDataMigrationContext context, XNode subtree)

at Microsoft.SSMA.GUI.Generic.LowLevel.AppCommandProcessing.Commands.SsmaAppDataMigrationCommand.StartMigrateData(Object context)

[Error: Generic] [38264/1] [2026-07-21 18:00:13]: Exception: Win32 handle that was passed to Icon is not valid or is the wrong type.

site: Void .ctor(Windows.Win32.UI.WindowsAndMessaging.HICON, Boolean)

source: System.Drawing.Common

at System.Drawing.Icon..ctor(HICON handle, Boolean takeOwnership)

at System.Drawing.SystemIcons.GetStockIcon(StockIconId stockIcon, Int32 size)

at System.Windows.Forms.ThreadExceptionDialog..ctor(Exception t)

at System.Windows.Forms.Application.ThreadContext.OnThreadException(Exception ex)

at System.Windows.Forms.NativeWindow.Callback(HWND hWnd, MessageId msg, WPARAM wparam, LPARAM lparam)

at Windows.Win32.PInvoke.DispatchMessage(MSG* lpMsg)

at System.Windows.Forms.Application.ComponentManager.Microsoft.Office.IMsoComponentManager.FPushMessageLoop(UIntPtr dwComponentID, msoloop uReason, Void* pvLoopData)

at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(msoloop reason, ApplicationContext context)

at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(msoloop reason, ApplicationContext context)

at Microsoft.SSMA.GUI.Product.Db2MfToMsSql.Program.Main(String[] args)

[Error: Generic] [38264/1] [2026-07-21 18:00:13]: System.UnhandledExceptionEventArgs