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Driver Package Rank Information in the SetupAPI Log

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When Windows is selecting a driver package to install, the SetupAPI log typically has a Rank entry that logs the driver rank in hexadecimal format and a Signer Score entry that logs the signature type. The following is an excerpt from a SetupAPI device log that shows an example of a Rank entry and an example of a Signer Score entry. In this excerpt, the Rank entry indicates that the driver has a rank of "0x00FF3101" and the Signer Score entry indicates that the driver is an inbox driver.

     utl:      Driver Node:
     utl:           Status         - Outranked
     utl:           Driver INF     - input.inf (C:\WINDOWS\System32\DriverStore\FileRepository\input.inf_amd64_3c85f2862c8bffeb\input.inf)
     utl:           Class GUID     - {745a17a0-74d3-11d0-b6fe-00a0c90f57da}
     utl:           Driver Version - 06/21/2006,10.0.22475.1000
     utl:           Configuration  - USB\Class_03&SubClass_01 [HID_Inst.NT]
     utl:           Driver Rank    - 00FF3101
     utl:           Signer Score   - Inbox (0D000003)

Or, in some scenarios, the logging may appear more like this excerpt where the Rank entry indicates that the driver has a rank of "0x00ff0005" and the Signer Score entry indicates that the driver is an inbox driver.

     dvi:           Created Driver Node:
     dvi:                HardwareID   - GenCdRom
     dvi:                InfName      - C:\WINDOWS\System32\DriverStore\FileRepository\cdrom.inf_amd64_9f14c614df704f62\cdrom.inf
     dvi:                DevDesc      - CD-ROM Drive
     dvi:                Section      - cdrom_install
     dvi:                Rank         - 0x00ff0005
     dvi:                Signer Score - INBOX
     dvi:                DrvDate      - 06/21/2006
     dvi:                Version      - 10.0.22475.1000

The following is a list of the Signer Score entries that Windows logs in the SetupAPI device log for each type of signature:

Premium WHQL signature
"Signer Score - WHQL Logo Gold"

Standard WHQL signature
"Signer Score - WHQL Logo Silver"

An unspecified Microsoft signature
"Signer Score - WHQL Unclassified"

A WHQL signature for a Windows version earlier than Windows Vista and equal to or later than the LowerLogoVersion value of the driver's device setup class.
"Signer Score - WHQL"

A Microsoft signature for an inbox driver
"Signer Score - INBOX"

An Authenticode signature or WHQL signature for a Windows version earlier than the version that is specified by LowerLogoVersion for the device setup class of the driver
"Signer Score - Authenticode"

Unsigned driver
"Signer Score - Not digitally signed"

For more information about driver ranking, see How Windows Ranks Drivers.