Howto install HHTWin in Windows 10 64bit with NTVDMX64 (no VM)

It works ok, on on my other computer with 12.2021.
Thank you all.

i install NTVDMX64. hhtwin operation on DAS is ok. But Xentry is error No access authorization or XENTRY Diagnosis was found on the server

i install NTVDMX64. hhtwin operation on DAS is ok. But Xentry is error No access authorization or XENTRY Diagnosis was found on the server

That error should be unrelated to NTVDMx64, sounds like Xentry is not "fixed" properly.

Anyone have hhtwin.exe can upload

HHTWIN.exe-modpath=C:\HHT\PKW\

I cannot get hhtwin to run das for older cars

Anyone have hhtwin.exe can upload

HHTWIN.exe-modpath=C:\HHT\PKW\

I cannot get hhtwin to run das for older cars

Everything you need is linked in the textfile, including HHTWIN.exe.

[UPDATE 2] Fixed HHTWIN_VM_Start.exe for systems where NTVDM might not close after exiting HHTWin

[UPDATE] disinfetor made his solution public, you're most probably better off using that:

https://mhhauto.com/Thread-NowPublic-Nat...ithout-VMs

WARNING, I have only tested this on my car with a SDConnect clone so far. I am not responsible for any damages that might happen to your car and I recommend reading the full Columbia Uni article (I downloaded NTVDMX64 from there, I did not compile it myself) AND the readme on the github page that I will link in the attachment, so you understand what you are getting into. Do a full backup of your system before installing this! You have been warned.

The HHT and hht_call folders are just slightly edited repacks, from Pesona's 64bit HHTWin thread, thanks for providing that buddy

I managed to run HHTWIN on Windows 10 64bit with the help of NTVDMX64 with the correct parameters that get passed on from Xentry to DAS to HHTWIN. At least for PKW, with NFZ I'm not so sure (NFZ starts up without crashing tho). The very simple program I wrote  just checks if DAS starts it with either "HHTWIN_VM_Start_PKW.bat" or "HHTWIN_VM_Start_NFZ.ps1" as a parameter, and starts HHTPKW.EXE or hhtnfz.exe accordingly.

The developer of NTVDMX64 recommends to have an internet connection during install, so it can download needed symbols from the M$ symbol server. This assures the correct start of NTVDM. It worked without those in this case (at least for me), but I'd suggest getting those. If the machine can't be hooked up to the internet you can copy over the symbols from another computer BUT the other PC has to have the same Windows updates installed as your diagnostic system, otherwise the symbols might be different.

Howto install:

- You have to deactivate secure-boot in the BIOS for this to work.

- Extract ntvdmx64-ccpu-fre.7z and start install.bat as admin.

  When it finished reboot your system. 

- Copy HHTWIN_VM_Start.exe from HHTWIN_VM_Start to ..\DAS\bin

- Backup and replace hhtcall.s from ...DAS\trees\pkw\programm\hht_link

- Copy the HHT folder to C:

- Check if "ParamPath" in HHT\PKW\HHTWIN_PROG.ini, HHT\NFZ\\HHTWIN_PROG.ini

  and "HHTWIN.exe-szParamsPath" in HHT\HHTWin.INI are correct, this is important.

  On my system (Xentry 12.2019) the path is:

  "C:\ProgramData\Mercedes-Benz\csd\writefil\HHTWIN_Params.ini"

  HHTWin will not get started with the correct parameters if that is incorrect.

  I preconfigured it with the above path.

 

That's all.

Under some rare circumstances after HHT closes the terminal window still stays open. That means NTVDM is still running. just close the terminal window, that will trigger a shutdown of NTVDM

Have tried this solution and it works with without the NTVDM version.

OTVDM works better and does not "break" Xentry/DAS startkey etc.

So install OTVDM first, run the install then at the end, do not select or do not install NTVDM.

Thank you bro

Since when did NTVDMx64 start breaking the startkey? I didn't use anything newer than the 2021 XDOS, that didn't happen for me. Back then when I did this winevdm did not work at all, but thanks for the pointer! Next time I install this I'll try winevdm/otvdm again, maybe something got changed/fixed. Winevdm is not as accurate as NTVDMx64 but in theory using winevdm can prevent some breakage after installing system updates. But even then that should not affect the startkey. I wonder what's going on 😕

Is there hhtcall.s for NFZ?