Error 0x80072746

[alessiodeia]

Installed on Win 10 pro for Workstation. I can launch standalone Sandbox no problem, but when i use this tool via contex menu on PS1 files, EXE files ect. i get this error with the message "Lost connection to the Sandbox". Am i doing something wrong?

[damienvanrobaeys]

Could you please send me WSB file generated ? You can send it at damien.vanrobaeys@gmail.com

[alessiodeia]

where can i find this file?

[damienvanrobaeys]

It should be on desktop or in %temp%

[toffe82]

Hello, I have the same problem on a brand new installation of WIN10, last version of the files downloaded today I had it working fine on an old install. I was testing opening notepad. This is the wsb file :

Enable Enable Default Default Default Default Default C:\WINDOWS\system32 true C:\Users\WDAGUtilityAccount\Desktop\system32\notepad.exe

Any idea of what is wrong ? Thank you

[toffe82]

`

Enable Enable Default Default Default Default Default C:\WINDOWS\system32 true C:\Users\WDAGUtilityAccount\Desktop\system32\notepad.exe

`

Sorry this is the file

[damienvanrobaeys]

Hi, Just tested from the right-click menu and also using your WSB file and I have no error. What is the windows 10 version you're using ?

[toffe82]

Hello,

It is win10 Pro 21h1 with all the update to this day: Microsoft Windows [Version 10.0.19043.1288]. Copy and paste the program in the sandbox works.

???

Christophe

On Tue, Nov 2, 2021 at 9:55 AM Damien Van Robaeys @.***> wrote:

Hi, Just tested from the right-click menu and also using your WSB file and I have no error. What is the windows 10 version you're using ?

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[damienvanrobaeys]

What do you mean by copy and paste program un sandbox ? I used your wsb and ran it

[toffe82]

If I copy a program I want to test in the sandbox, it is working, so the sandbox is working. If I right-click to select run in sandbox, I have the error, same thing if I double-click on the wsb file

Christophe

On Tue, Nov 2, 2021 at 11:26 AM Damien Van Robaeys @.***> wrote:

What do you mean by copy and paste program un sandbox ? I used your wsb and ran it

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[damienvanrobaeys]

Ok it is working for me too. Strange thing is that your wsb file works for me. I will do some tests.

[damienvanrobaeys]

Your OS is an English version ?

[toffe82]

Yes it is the US version

On Tue, Nov 2, 2021 at 12:41 PM Damien Van Robaeys @.***> wrote:

Your OS is an English version ?

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[damienvanrobaeys]

Just installed a W10 pro for workstation on a VM then sandbox and runinsandbox. No issue while right-click on notepad.exe then run in sandbox. I'm updating the VM with latest CU and updates.

[toffe82]

This is the windows features installed [image: image.png] I have VMware workstation 16 installed too

On Tue, Nov 2, 2021 at 1:31 PM Damien Van Robaeys @.***> wrote:

Just installed a W10 pro for workstation on a VM then sandbox and runinsandbox. No issue while right-click on notepad.exe then run in sandbox. I'm updating the VM with latest CU and updates.

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[damienvanrobaeys]

and what is the result if you create a wsb as mentioned there ? https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-sandbox/windows-sandbox-configure-using-wsb-file

WSB Downloads.wsb

[toffe82]

The download wsb works. I made some test disabling options and if I disable VGpu, it works

My computer is a DELL XPS9560 with an nvidia GTX1050 and intel HD graphics 630

On Tue, Nov 2, 2021 at 2:13 PM Damien Van Robaeys @.***> wrote:

and what is the result if you create a wsb as mentioned there ?

https://docs.microsoft.com/en-us/windows/security/threat-protection/windows-sandbox/windows-sandbox-configure-using-wsb-file

WSB below:

Disable Disable

C:\Users\Public\Downloads C:\Users\WDAGUtilityAccount\Downloads true

explorer.exe C:\users\WDAGUtilityAccount\Downloads

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[damienvanrobaeys]

You mean the notepad wsb ? And if you change teh value vgpu to enable fo the download wsb ?

[toffe82]

yes, notepad wsb works if I disable vgpu

On Tue, Nov 2, 2021 at 2:38 PM Damien Van Robaeys @.***> wrote:

You mean the notepad wsb ? It means the option vgpu doesn't work on your device ?

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[damienvanrobaeys]

And if you enable vgpu in download wsb ?

[toffe82]

If I enable vgpu in the download wsb, same error

On Tue, Nov 2, 2021 at 2:38 PM Damien Van Robaeys @.***> wrote:

You mean the notepad wsb ? It means the option vgpu doesn't work on your device ?

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[damienvanrobaeys]

Ok cool so the issue is mostly relative to sandbox and vgpu, nice feedback Christophe

[toffe82]

I find this : https://www.tenforums.com/tutorials/159840-enable-disable-vgpu-sharing-windows-sandbox-windows-10-a.html

But there is nowhere on my install to find this settings, no sandbox in the group policy ?? Can you check on your install ?

On Tue, Nov 2, 2021 at 2:45 PM Damien Van Robaeys @.***> wrote:

Ok cool so the issue is mostly relative to sandbox and vgpu, nice feedback Christophe

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[damienvanrobaeys]

I will check that tomorrow, just shutdown laptop lol. I will keep you informed

[damienvanrobaeys]

Actually the policy is to enable it by default but when you run the wsb it does the same for a specific sandbox session. According to me it is mostly something relative to your device and option vgpu. There are some posts about that:

https://answers.microsoft.com/en-us/windows/forum/all/windows-10-sandbox-vgpu-support-requirements/3e578858-c733-48c5-92ce-22fc58860446

[damienvanrobaeys]

https://www.reddit.com/r/sysadmin/comments/n9805y/gpu_passthrough_isnt_working_in_windows_sandbox/?utm_source=amp&utm_medium=&utm_content=post_body

[toffe82]

I don't have the option in the bios

On Tue, Nov 2, 2021 at 10:38 PM Damien Van Robaeys @.***> wrote:

https://www.reddit.com/r/sysadmin/comments/n9805y/gpu_passthrough_isnt_working_in_windows_sandbox/?utm_source=amp&utm_medium=&utm_content=post_body

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[damienvanrobaeys]

As we have seen the issue is relative to native Windows Sandbox using different graphic cards and the option VGpu from WSB file.

For this issue, the solution should be:

• Open file Sources\Run_in_Sandbox\Sandbox_Config.xml
• Set value Enable to Default or Disable
• Run Add_Structure.ps1