If after running DISM tool to update files and Update to Windows 10 v update error code 0x80070422 still occurs. You may need to RUN SFC tool to fix this problem.

In an update to the Windows 10 Health Dashboard, Microsoft has acknowledged that this issue is affecting both Windows 10 and Windows server version 1903.

Despite the message, Microsoft says this error does not impact the update or the device's functionality.