Windows 10: Windows sandbox no longer working after KB5046740

After installing KB5046740, windows sandbox stops working giving error: "The connection to the Windows Sandbox environment was lost. An existing connection was forcibly closed by the remote host. 0x80072746"After initially hitting this problem post the update I ran through the normal steps of removing the Windows Sandbox feature, rebooting the machine, re-adding the Windows Sandbox feature again and rebooting.When this didn't resolve the issue I followed the online steps to use dism to check / repair the installation. This also did not work.I then resorted to downloading the iso image from

:)

 

windows sandbox Not working

Hi,



Thank you for writing to Microsoft Community Forums.



There is a possibility that the feature is corrupted or not set up properly. I would advise you to disable Windows Sandbox first and then enable it. Please follow the steps mentioned below:

1. Open Control Panel.
   
2. Then click on all Control Panel Items.
   
3. Then click on Programs and features.
   
4. Then on the left hand side, click on Turn Windows features on or off.
   
5. Then uncheck the option: Windows Sandbox.
   
6. Then restart your computer.
   
7. After restart, please enable it and check if the sandbox is working.
   

Also make sure that you meet all the requirements for Windows Sandbox.

Regards,

 

Microsoft sandbox stoped working

Hi,



Thank you for writing to Microsoft Community Forums.



Please be informed that our developer team is aware of the issues with Sandbox and is working on resolving it. We do not have an ETA as of now, however I encourage you to send a feedback to our developer team via
Feedback hub. As a suggestion you can try disabling and enabling
the sandbox to check if that works. Please follow the steps mentioned below:

1. Open Control Panel.
   
2. Then click on all Control Panel Items.
   
3. Then click on Programs and features.
   
4. Then on the left hand side, click on Turn Windows features on or off.
   
5. Then uncheck the option: Windows Sandbox.
   
6. Then restart your computer.
   
7. After restart, please enable it and check if the sandbox is working.
   

Also make sure that you meet all the requirements for Windows Sandbox.
Your patience and understanding will be appreciated in this matter.



Regards

 

error ox800706d9 sandbox not work

For Windows 10 1903 sandbox wont start errors all you do is just restart the following service under Administrative tools



Container Manager Services.



then reopen sandbox should start up like normal.

If it does not start up do the following below.



If you have Hyper-V installed and Virtual disk is turned on under Administrative tools you must restart all these services

1. Container Manager Services
2. HV Host
3. Virtual Disk
4. Hyper-V Virtual Machine Manager
5. Hyper-V Host Compute Service
6. Network Virtualization Service

Do this in the following order

1. Right click over (Network Virtualization Service) click restart and wait.
2. Right click over (Virtual Disk) click restart and wait.
3. Right click over (Hyper-V Virtual Machine Manager) click restart and wait
4. Right click over (Hyper-V Host Compute Service) click restart and wait
5. Right click over (Container Manager Services) click restart and wait

Check these services are still on

Application Guard Container Service (If installed)

Remote Procedure Call (RDC) (""This must be running as most of the others rely upon its function it should never be disabled"")



Once they are checked start sandbox and it should open up if it does restart your computer to ensure the services are still functional are a restart of computer this should also be done if sandbox does not start up once these services are restarted
and checked.



Created By Eric O'Malley

17th June 2019

Windows Sandbox failed to start

A Work Around

To get

Windows Sandbox

Working again

Created

By

Eric O’Malley

10/06/2019





Well I work out a solution to get Windows Sandbox going again it’s not the best solution but work around follow the steps below and hope it works for all of you guys.

1. The first thing you have to do is turn off Windows Defender Random Folder Protection
   or the anti virus random folder protection.
   
2. Next turn off Windows defenders Tamper protection Or the Anti-Virus Tamper protection
   
3. Once that turn off Go to Control Panel open it
   
4. Location Administrative Tools
   
5. Next head to Services and open that
   
6. Scroll down to Container Manager Services
   
7. Turn off Container Manager Service only
   
8. Leave service screen open but minimize it
   
9. Next go to control panel location and open File Explorer Options
   
10. In File Explorer Options Untick the following:
    

1. • Don’t Show Hidden Files, Folders, or Drivers
     
   • Hide Empty Drivers
     
   • Hide Extensions Known Files Types
     
   • Hide Merge Conflicts
     
   • Hide Protected Operating Systems Files
     

1. Now move File Explorer Options to one side of your screen
   
2. Go back to Control Panel
   
3. Locate and open Program and Features
   
4. Go to Turn Windows Features on or Off
   open it
   
5. Scroll down to Windows Sandbox
   
6. Untick Windows Sandbox
   
7. Click ok to uninstall Windows Sandbox
   
8. Close off only the screen that removed Windows sandbox
   
9. Next go to your main drive usually C: Drive
   
10. Location ProgramData
    
    • We need to get to this location (C:\programData\Microsoft\Windows\Containters\Sandboxes)
      

1. Even open it or expand ProgramData
   
2. Locate Microsoft open it or expand
   
3. Scroll down to Windows open it or expand
   
4. Now go to the folder called Containers
   open it or expand
   
5. Now you should see Sandboxes
   
   • You Should be at this location Now
     

(C:\programData\Microsoft\Windows\Containters\Sandboxes)

1. Now in that folder Sandbox is folder that looks like this
   

1. • 4040f074-2ff6-471c-9f38-4836db85fff6
     
   • Inside it is sandbox.vhdx
     

1. What we need do is delete all the strange folders keys that’s in
   

(C:\programData\Microsoft\Windows\Containters\Sandboxes)

1. If it does not delete just wait a few seconds and try again
   

Caution do not delete the folders from recycle bin yet

1. Next go to the folder below it called
   Zygotes
   

(C:\programData\Microsoft\Windows\Containters\Zygotes)



Repeat the steps you did at Sandboxes and delete the strange folder keys with its contents but do not delete what’s in recycle bin.

1. Repeat the step you did at Sandboxes and delete the
   strange folder key with its contents
   
2. If it does not delete just wait a few seconds and try again
   
3. Now move the open explorer screen to one side of the screen
   
4. Head back to control panel
   
5. Locate and open Program and Features
   
6. Go to Turn Windows Features on or Off
   open it
   
7. Scroll down to Windows Sandbox
   
8. This time re-tick Windows Sandbox and close and allow it to reinstall the sandbox
   
9. Close only the install screen
   
10. Go back to services and Restart Container Manager Service
    
11. Leave Services screen open move it to once side again.
    
12. We now head to Start then Settings
    
13. Scroll until you find Windows
    Sandbox click it twice.
    
14. Wait and see how the screen opens if it give you another error
    repeat this process
    
15. When you open Windows Sandbox it should
    hang for 5 to 10 minutes without any error message
    
16. What it’s doing is rebuilding its image then it opens back to what it was in default settings.
    
17. Once you have sandbox reopened and its got the icons load close it pressing the
    red X
    
18. Then reopen Windows Sandbox to see if it opens up again.
    
19. If it does you fixed it.
    
20. Now we can turn back on
    
    • Windows Defender Random Folder Protection
      or the anti virus random folder protection
      

1. • Windows defenders Tamper protection Or the Anti-Virus Tamper protection
     

1. Retest Windows sandbox will open again with the above
   turned on
   
2. If it does the next thing is to restart your computer and
   Repeat the opening of Windows sandbox.
   
3. Once all is well your right to continue
   
4. You can delete the folders in your recycle bin too.
   

Created by

Eric O’Malley

10/06/2019