Microsoft-WindowsPhone-UfxSynopsys Seen on: Windows 10 (1903, 1909, 2004, 20H2) Windows 11 (21H2) Log source(s): Microsoft-WindowsPhone-UfxSynopsys Identifier: {49b12c7c-4bd5-4f93-bb75-30fce739600b} Event message file(s): %systemroot%\system32\drivers\ufxsynopsys.sys