Microsoft added a new compatibility hold to block users of Zebra XSLATE B10 rugged tablets from installing or updating to Windows 10, version 1903 or Windows 10 version 1809. Microsoft is still currently blocking some Windows devices with compatibility issues after receiving the May 2019 Feature Update. Microsoft advises all users to “not attempt to manually update using the Update now button or the Media Creation Tool until this issue has been resolved”” Microsoft has resolved the issues behind seven Windows 10 v1903 update blocks 11
Source: security