[Bug]: Windows.Sanbox - Initialization of Windows Sandbox failed.

[OUTIS1906]

Windows Sandbox version

Initialization of Windows Sandbox failed.

Windows build number

25H2 26220.7934

Other software

Depediencies :

dism feature
FeatureName : Containers-DisposableClientVM
State : Enabled
Path :
Online : True

appx package
Name : MicrosoftWindows.WindowsSandbox
Publisher : CN=Microsoft Windows, O=Microsoft Corporation, L=Redmond, S=Washington, C=US
Architecture : X64
Version : 0.5.3.0

Steps to reproduce the bug

Launch Windows Sanbox:

• from wsb.file
• from .exe
• from start menu shortcut

Expected result

No response

Actual result

Polish:
Inicjowanie Piaskownicy systemu Windows nie powiodło się.
Nie można odnaleźć określonego pliku. (0x80070002)

English:
Initialization of Windows Sandbox failed.
The system cannot find the file specified. (0x80070002)

Included System Information

Current updates:

• KB5074828
• KB5066383
• KB5077242
• KB5077249

Berore installing above kb's faced same launch issue on previous windows compilation.

Feature 'Containers-DisposableClientVM' has been re-enabled few times.
It seems some files are not populating in (C:\ProgramData\Microsoft\Windows\Containers) after enabling feature

Performed dism/sfc operations.

[OUTIS1906]

when launching from .wsb , none of default/enabled/disabled capabilities combination works

[madooq]

I’m experiencing the same issue and have also tried the troubleshooting steps mentioned above.

Windows build: 25H2 26200.7840

Current updates:

KB5077181
KB5077869
KB5066128
KB5054156

[lierizhuoxin]

I’m experiencing the same issue ，what can i do？

[Vaflor]

Same Issue on 24H2
Files not populating in C:\ProgramData\Microsoft\Windows\Containers

ContainerStorages is missing files.

Initialization of Windows Sandbox failed.
The system cannot find the file specified. (0x80070002)

Tried re-installing Sandbox several times no luck.

[madooq]

After todays update it works again for me.

Windows build: 25H2 26200.8037

Current updates:

HotFixID InstalledOn

---

KB5079473 11/03/2026
KB5083532 11/03/2026
KB5077869 11/02/2026
KB5066128 29/10/2025

[Vaflor]

Can confirm Sandbox working again after updates.

[OUTIS1906]

After installing the latest update (KB5079473, Build 25H2 26220.7961),

Sandbox is working again. The sandbox.vhdx and .vmgs files are now populated.