Hello everyone
I have a problem where my job handler, which starts AutoCAD, cannot create a new instance of AutoCAD after updating from AutoCAD 2026.0.1 to 2026.1.
I explicitly created a new job handler that only tests the AutoCAD startup to avoid any interference with other code. Unfortunately, I always get the same result.
public void StartAcad()
{
AcadApplication _Acadreturn = null;
string AcadProgID = "AutoCAD.Application";
try
{
try
{
_Acadreturn = (AcadApplication)RunninObjectTable.GetActiveObject(AcadProgID);
}
catch (Exception)
{
Type AC = Type.GetTypeFromProgID(AcadProgID);
if (AC != null)
{
_Acadreturn = (AcadApplication)Activator.CreateInstance(AC, true);
}
else
{
//Console.WriteLine("Wrong AutoCAD ProgID : " + AcadProgID);
}
}
}
catch (System.Exception ex)
{
//Console.WriteLine($"{ex.Message} : {ex.StackTrace}");
//The ErrorMessage
//Retrieving the COM class factory for component with CLSID [607BBE5B-A4EE-47EB-88C9-75FE5F12EAC7] failed due to the following error:
//80080005 Starten des Servers fehlgeschlagen (0x80080005 (CO_E_SERVER_EXEC_FAILURE)). :
//at System.RuntimeTypeHandle.AllocateComObject(Void* pClassFactory)
throw;
}
}
when this line of code is called...
_Acadreturn = (AcadApplication)Activator.CreateInstance(AC, true);
...this AutoCAD error message appears.
The exception contains this message
Retrieving the COM class factory for component with CLSID [607BBE5B-A4EE-47EB-88C9-75FE5F12EAC7] failed due to the following error: 80080005 Starten des Servers fehlgeschlagen (0x80080005 (CO_E_SERVER_EXEC_FAILURE)). : at System.RuntimeTypeHandle.AllocateComObject(Void* pClassFactory)
However, the same code works fine from a console application. So it must be something in the job processor environment.
I have installed all updates for AutoCAD 2026, Vault2026, and all installed Autodesk products.
Does anyone have any ideas?
Best regards
Gerhard
