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DAX driver?

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John Watson W4JCW
John Watson W4JCW Member ✭✭
in DAX

I have a new computer have am trying to get everything installed properly. Running Windows 11PRO. Everything seems to work when installing SmartSDR with the exception of DAX…I am getting the following errror message…

DAX error.jpg

Comments

  • KD0RC
    KD0RC Member, Super Elmer Moderator
    Options

    Hi John, under Win 11, you need to turn off core isolation to use DAX.

  • John Watson W4JCW
    John Watson W4JCW Member ✭✭
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    Not a computer guy…how do I do so?

  • John Watson W4JCW
    John Watson W4JCW Member ✭✭
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    Okay...so I just performed this and uninstalled/reinstalled SmartSDR...same issue??

  • VE7ATJ_Don
    VE7ATJ_Don Member ✭✭✭✭
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    Hi John, it's under Settings/Privacy & Security/Windows Security/Device Security

  • John Watson W4JCW
    John Watson W4JCW Member ✭✭
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    Yeah, I searched and found it, but after turning it off, rebooting and uninstalling/reinstalling SmartSDR, I have the same issue??

  • John Watson W4JCW
    John Watson W4JCW Member ✭✭
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    I have just put in a ticket…

  • christophe
    christophe Member ✭
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    Hello, it's january 2026 and I can't fully use my FlexRadio due to DAX issues with Windows 11 25 H2. Is there finally a solution? I'm ready to sell my FlexRadio and switch to something else.My ticket was closed without any solution. I am very disappointed.
  • Mike-VA3MW
    Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator admin
    Options

    Many run DAX on Windows 11, and fact, that is our support level. I have 5 computer running on Windows 11 with DAX working just fine.

    Can you elaborate a bit more?

  • John Watson W4JCW
    John Watson W4JCW Member ✭✭
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    I performed the manual installation of the DAX drivers…working just fine now…

  • Jonathan Shapiro
    Jonathan Shapiro Member ✭
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    I did as asked above, reloaded SDR, Slice-master, and continue with DAX error. How do I manually load DAX drivers?
  • christophe
    christophe Member ✭
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    Hello, after doing everything FlexRadio support told me to do (ticket from the end of December), the problem remains the same ( see error message above) with my PC running Windows 11 25H2, whereas with the backup PC running Windows 11 23H2 there's no problem. Do you have any solutions? It's really frustrating not having DAX .
  • christophe
    christophe Member ✭
    Options
    After multiple uninstallations of DAX (directly from the directory) and just as many manual ones, I finally managed to install DAX.
    Yes!!! it is a miracle ?

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