SmartSDR v3.9.19 and the SmartSDR v3.9.19 Release Notes
SmartSDR v2.12.1 and the SmartSDR v2.12.1 Release Notes
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How do I resolve this error?

Comments
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As I remember Windows is trying to assign a DAX channel as a default device. The DAX drivers will not operate as default devices. Go into windows sound settings and assign a speaker and a microphone input as the default devices. Then attempt the DAX installation. I had the same error with my Win 11 installation.
Gayle K0FLY
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Thanks, but this seems to be the Tx stream. Rx is fine.
The default and communications device are both set to the PC Mic in the sound settings control panel and I can see no errors being reported in device manager.
I've tried re-running the VSP installer, and I've even nuked the entire installer and re-installed 3.4.23. It makes no difference
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Panic over!
I followed the procedure in Tim's note to re-install the DAX drivers.
https://helpdesk.flexradio.com/hc/en-us/articles/204017069-How-to-Manually-Re-Install-
That seems to have cured it.
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