After installing update (KB5124010) (26200.9550), Windows Sandbox fails after running for a while and installing software within it.

After installing patch (KB5124010) (26200.9550), Windows Sandbox fails after being active for some time; it starts up normally, but after a while and you install something into Sandbox, the screen disappears and error 0x80370106 is displayed.

The steps to reproduce the issue are as follows:

1. Start the sandbox.
2. Install software (e.g., IDM or another application).
3. Launch the Edge browser and enable the plugin.
4. Close the browser.
5. Launch the browser again; it updates itself.
6. Wait for Windows Sandbox to crash and display error 0x80370106.

This triggers the TiWorker process to attempt an update inside the sandbox, resulting in the failure.


Best regards, and I hope this is resolved soon.

I uninstalled KB5124010, and Windows Sandbox worked without issues—no crashes—even when performing the actions that usually cause it to crash after running for a while.

Upon reinstalling KB5124010, the problem with Windows Sandbox returned.

It is clear that something in this new update introduces a bug—likely related to TiWorker—causing a crash within the sandbox when it attempts to update.

I create a bug issue into Windows sandbox github

[Bug]: After installing update (KB5124010) (26200.9550), Windows Sandbox fails after running for a while and installing software within it. · Issue #132 · microsoft/Windows-Sandbox