FACILITY_USERMODE_FILTER_MANAGER: the user mode filter manager.

The source of the error code is the user mode filter manager.[1][2]

Sources

  1. https://msdn.microsoft.com/en-us/library/cc231198.aspx
  2. winerror.h from Windows SDK 10.0.14393.0
  3. fltWinError.h from Windows SDK 10.0.14393.0