4 Replies Latest reply on Apr 24, 2017 5:53 AM by cnemnom

    Failed to start mst service (Windows cannot verify the digital signature for this file)


      Hello All,


      I have two HPE-Mellanox adapters on 2 Servers:


      1- HPE Ethernet 25Gb 2-port 640SFP28 Adapter

      2- HPE Ethernet 25Gb 2-port 640FLR-SFP28 Adapter


      I updated the latest drivers (DriverVersion: 1.60.16216.0) and firmware successfully on one Node.

      On the second node, I was able to update the driver using pnputil.exe command, however, I am not able to run the mst status.

      I installed the latest WinMFT tool (WinMFT_x64_4_6_0_48.exe) on each node.

      Please find the error below:


      -E- MST devices:


        No MST devices found

      -E- Failed to start mst service (577): Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source.


      I am running Windows Server 2016 and Windows Defender is running. I excluded the following path in Windows Defender but still the same issue:

      ExclusionPath                                 : {C:\Program Files\Mellanox\}

      ExclusionProcess                           : {mst.exe, mst_ib_add.exe}


      Please help.


      Thank you!