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Sorry for the delayed answer... In my research I've found that the OS that run VBox need to be 3D accelerated to be able to accelerate Virtualized OS. Other solution is to use a DX11 emulator from Windows SDK to be able to run without GPU/iGPU , the soft is called "dxcpl-directx-11-emulator.exe" To be able to run DCS with this soft enabled you have in it to edit list and add DCS.exe, then - Debug Layer = Application Controlled - Mute Severity = Info - Mute category = Application defined - Device Settings = Feature level limit : 11_0 ; Force Warp If you don't find the application send me a PM, I'll link it to you. Validate then run DCS. I'm able to run it on my test machine, Windows10 on a Xeon E3120 without iGPU nor GPU and it run a bit slower than on my production server. Regards,

In our case we just enable the service disabled by myself 2 years before today ;) In our case it was working because we have an audio card built-in the server. If you don't have one, you've to install a driver like this one https://www.vb-audio.com/Cable/ that will create a virtual audio card, then DCS see it and no more errors related to that in DCS.log. Make a look to your DCS.log file and look to SOUND "entries" at the beginning of the file, if the text was like that : INFO SOUND: XAudio2: Using device ID:'' Name:'', channels: 0 ERROR SOUND: XAudio2: can't create MasteringVoice ERROR SOUND: Failed to start SND_Renderer. ERROR SOUND: can't start renderer => there is a problem ;) Since we enable the service, DCS can access to audio device, the text is now : INFO SOUND: XAudio2: Using device ID:'{0.0.0.00000000}.{8308564e-f47c-45fd-bfd5-6a29a623022c}' Name:'Casque (Périphérique High Definition Audio)', channels: 2 INFO SOUND: XAudio2: channel layout: Headphones/Stereo INFO SOUND: Using SSE FTZ/DAZ mode. => No more errors ;) You not just need to enable audio service, DCS must be able to access them (as I've understanded). Regards, Edit : you have to restart the game after enabling an audio device

+1 To Whisper, after reenabling Windows Audio Service, seem to work like a charm. We will test it some days then going back for a report ;) Thanks for advices Regards,

No problems, I totally understand ;) I've noted that, in fact there is an audio card but Windows Audio Service was disabled. I changed that, Whisper make a test actually to see if there is any changes. I'll tell you if there are any changes. If not, I'll send you a new dcs.log and dxdiag (no changes to config). Regards,

@BIGNEWY If you need to test directly on our server ask for the name or password to myself or Whisper (I'm the sysadmin and he's the Mission Master)

link corrected, sorry for that http://teamcity.fr/LPF_diag.zip

BIGNEWY, please find attached an archive containing : - autoexec.cfg - options.lua - DxDiag.txt - dcs.log 2018-05-30 11:08:31.312 => First client access 2018-05-30 11:15:07.020 => second client access approx 11:38 : desynchronization from clients, IA don't seem to moove anymore, server console is "not responding". Problem solved when the client change slot to spectator or any other module than Harrier. Only one error related to Harrier found @ 11:28 after a plane crash : "2018-05-30 11:28:38.334 INFO SCRIPTING: Event unit - Pilot Dead 2018-05-30 11:28:38.334 INFO Scripting: event:type=pilot dead,initiatorPilotName=bob,initiator=Pilot #025,t=62617.184,initiatorMissionID=1397, 2018-05-30 11:28:38.490 ERROR GRAPHICSVISTA: Can't open model AV8BNA_DESTR." Hope you can help us... Here the archive : http://teamcity.fr/LPF_diag.zip

I7 4th gen here (4790k) and the problem occur...

I'll ask my users to connect and send you dcs.log, dxdiag and the time web the problem occur. Regards,

What can de do to help you to reproduce the problem ? You want an access to our server, reproduce then I link you the dcs log file ? If you want to, PM myself or Whisper (for our server) I don't understand your test bench, you only say that you've tested on an unique server (with I assume only one mission) To say that the problem is not reproductible, and as the 104th run fine si there is no issue ? Seem to be a joke. We'll make a new test on another dedicated with different hardware but many people have this problem with the same root problem, it is not acceptable to just say that je not reproductible, every server admin or mission builder have this problem on different server/mission set ! The June 12th Will be our 2 years of server production birthdate and we never had this kinds of problems, only Harrier seem to be the problem.

This method still work for auto load mission : https://forums.eagle.ru/showthread.php?t=160829&page=5 For the rest, you've to done that out of DCS, like Powershell or Batch

No problems with DX11 on a vbox virtual machine, like I said, if you enable 3D acceleration it work well... If your virtualized OS have access to a compliant GPU, then, virtualized Windows will have a working DX11, no matter of the virtualization software, only important thing is 3D acceleration. BitMaster is true, there are not any step-to-step to do this result but it is not complicated (this part) : - Depending of your distribution, install gnome like that : apt-get install ubuntu-gnome-desktop - For NoMachine (I use it to take remote control on Gnome) : https://www.nomachine.com/all-documents And this is just a first step. Next steps are a bit more complicated, you'll have to manage network access to/from the virtual machine and that depend of many things (numbers of NICs, possibility to have a secondary IP and so on.

My dedicated server run on a virtualbox host. To have access to the gpu (in my case integrated chipset of an i7) i've to run virtualbox from a gnome session graphicaly like that you can enable 3d acceleration in your vm settings then access to the gpu from the vm. It's à free solution. You can remotely connect to a gnome session with solutions like nomachine or vnc.