Microsoft has admitted that a recent update, KB4497936, has broken one of the anticipated features of Windows 10 1903.
Windows Sandbox may fail to start with error code “0x80070002”
Windows Sandbox may fail to start with “ERROR_FILE_NOT_FOUND (0x80070002)” on devices in which the operating system language is changed during the update process when installing Windows 10, version 1903.
- Client: Windows 10, version 1903
Next steps: We are working on a resolution and estimate a solution will be available in late June.