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Delphi10.2.3: OTL, FMX, ACTIVEX DCOM i have a big problem in my code to call the parallel.Async many times i have 6 ActiveX DCOM in Delphi, and wanna call these in same time, to calculate an invoice, so in my exe i work with OTL to async all calls activex, i don't like to wait result or freeze my screen. Parallel.Async( procedure (const task: IOmniTask) var iInnerExc: integer; begin /// ***********************************************************/// { return Log} TLogSingleton.Instance().Log('Services XX calcul: Début appel.',True); //************************* PARALLEL ASYNC ****************************// // executed in background thread try // {Create instance de ViewModel annexes: XXServiceXX} mainViewModelPreCalculOTLLevel03 := CreateMainViewModelOTLLevel03Class; {Affecter le même Model principal} mainViewModelPreCalculOTLLevel03.Model := fModel; {Suscribe the observer in list} mainViewModelPreCalculOTLLevel03.Provider.Subscribe(fSubscriber); {Call VieModel.ServiceXX} mainViewModelPreCalculOTLLevel03.StartPrecalcul; except on e:exception do {call the raise, juste ci dessous, dans le onterminated Handle} raise Exception.Create('Exception lors du traitement de Service XX.'); end; end, Parallel.TaskConfig.OnTerminated( procedure (const task: IOmniTaskControl) var excp: Exception; begin // executed in main thread if assigned(task.FatalException) then begin {expoiler l'exception, captcher ci dessus} excp := task.DetachException; TErrorSingleton.Instance().Log(Format('Service XX: [Fin TASK Error]. %s:%s',[excp.ClassName, excp.Message]),True); FreeAndNil(excp); end else begin // executed in main thread { return Log} TLogSingleton.Instance().Log('Services calcul: [Fin TASK] Fin appel traitement.',True); SendNotification([actServiceXXFinish]); end; end )); the Active X Call in exe FMX: (the server activeX is integreted in framework, i don't have the source code, and i don't know haw it writen) _Dm_Dcom := CreateObject('SERVICE.XX.CLT.SERVICEXX', 'DEFAUT') as ICoServiceXX; //Instance of the DLL //CALL the function in ServiceXX_impl _Dm_Dcom.GETTRaitementServiceXX(SafeArrayIn,SafeArrayOut,FListnerForPushNotif ); //with SafeArrayIn =Json IN, and take result in SafeArrayOut; FListnerForPushNotif to send notification (Type Interface: Iunknow) the ActiveX initialization in every SERVICEXX (DLL) TAutoObjectFactory.Create(ComServer, TTest, Class_Test, ciMultiInstance, tmApartment); in this DLL; we have ServiceXX_impl unit, we have one function to call traitement in another class, we can found a communication with the IInterface (published) to send notif like this: (FListnerForPushNotif as IDataListnerForPushNotification).PushNotificationForLog('Message to send to client side'); //we have many logs types: event, Error, Exception //PushNotificationForLog, PushNotificationForError,PushNotificationForException this is my call, i repeat it 6 times, Parallel.Async( CALL01 ); Parallel.Async( CALL01 ); Parallel.Async( CALL02 ); Parallel.Async( CALL06 ); i don't need to freeze my exe, and i don't need to wait, with SendNotification([actServiceXXFinish]); or other Action like "actService01Finish", "actService02Finish" i can kown if my traitement is finished or not, finaly, if i write all 6 calls, i will fall in many and many problems, like freeze screen, and deadlock (the only solution kill the process crl+alt+supp), but if i write only one call, it will be perfect, i have, my result, but the freeze screen persist, Conclusion: 1- with many calls: problems: screen freeze, traitement not working, --> kill the process. 2- with one only call: problems: screen freeze: the "TAniIndicator" not working and the screen freeze when Delphi enter in the other DLL (activeX). Nota: the Exe is FMX (in another step it will be a Form application), the 6 services are DLL (ActiveX DCOM). plz help me

In OTL (3.0.7), OTLCommon.TOmniAffinity.GetMask calls DSiGetSystemAffinityMask, DSiGetProcessAffinityMask and DSiGetThreadAffinityMask which all call Winapi.windows.GetProcessAffinityMask, which can fail (I don't know under what conditions, but clients are reporting that it happens under Wine and also on at least one windows 10 system). If it fails, the var returns lpProcessAffinityMask and lpSystemAffinityMask are undefined. OTL release 1.40 made some changes to support 64 bit, and so I think in most places this behaviour won't show. However, for example OTLCommon.TOmniAffinity.GetCount has affMask := Mask; where affMask is a DWORD and mask is the NativeUInt property. An ERangeError won't be thrown unless: 64 bit arch range checking on GetProcessAffinityMask throws the second 64-bit param (lpProcessAffinityMask) value comes back as an invalid 32 bit value (I assume, under whatever conditions that trigger this issue, winapi doesn't change the stack val, so for example whatever was in that position happened to be an invalid 32 bit value) So my suggestion is that anywhere getProcessAffinityMask is called (I think just 3 places), it is checked for failure and if so some reasonable value is returned, eg if not GetProcessAffinityMask(GetCurrentProcess, Result, systemAffinityMask) then result := 1;