[nanis]

> Microsoft has an error lookup tool

My little one liner has the advantage of having worked for me since Windows 98 days (OK, Perl did not have `say` then), but this tool provides more clues:

    C:\> Err_6.4.5.exe 343
    # for decimal 343 / hex 0x157
      KERNEL_THREAD_PRIORITY_FLOOR_VIOLATION                         bugcodes.h
      ERROR_EXTERNAL_BACKING_PROVIDER_UNKNOWN                        winerror.h
    # The external backing provider is not recognized.
    # for hex 0x343 / decimal 835
      ERROR_INVALID_SERVER_CERT                                      raserror.h
    # as an HRESULT: Severity: SUCCESS (0), FACILITY_NULL (0x0), Code 0x157
    # for decimal 343 / hex 0x157
      ERROR_EXTERNAL_BACKING_PROVIDER_UNKNOWN                        winerror.h
    # The external backing provider is not recognized.
    # 4 matches found for "343"

versus

    C:\> wm 343
    The external backing provider is not recognized.