Welcome to the new FlexRadio Community! Please review the new Community Rules and other important new Community information on the Message Board.
If you are having a problem, please check the Help Center for known solutions.
Need technical support from FlexRadio? It's as simple as Creating a HelpDesk ticket.

Invalid digital signature on v1.6 DAX MIC Audio driver

Barry N1EU
Barry N1EU Member ✭✭
edited March 2017 in SmartSDR for Windows
After installing v1.6, I get a warning that the Kernel-mode WDM driver (DAX MIC Audio) does not have a valid digital signature and Windows is rendering the driver unavailable.

Subsequently, upon SSDR startup, a DAX Driver Error is thrown.


  • Abed - AB5ED
    Abed - AB5ED Inactive Employee
    edited December 2016
    Because we have updated the DAX drivers, we are using a newer digital signature. Windows Update should provide you with the latest ones-- have you done a Windows Update recently?
  • Tim - W4TME
    Tim - W4TME Administrator, FlexRadio Employee admin
    edited March 2017
    Update your Root Certificates on your PC using Windows Updates.
  • Barry N1EU
    Barry N1EU Member ✭✭
    edited February 2017
    Thanks, will do!
  • Barry N1EU
    Barry N1EU Member ✭✭
    edited December 2016
    I think that did the trick!  Sorry for the bandwidth but maybe somebody else will run into the same issue and this will help.

Leave a Comment

Rich Text Editor. To edit a paragraph's style, hit tab to get to the paragraph menu. From there you will be able to pick one style. Nothing defaults to paragraph. An inline formatting menu will show up when you select text. Hit tab to get into that menu. Some elements, such as rich link embeds, images, loading indicators, and error messages may get inserted into the editor. You may navigate to these using the arrow keys inside of the editor and delete them with the delete or backspace key.