Getting message There are no virtual USB host controller ports available.

Discussion in 'Parallels Desktop on a Mac with Apple silicon' started by MickeyA1, Jan 25, 2021.

  1. MickeyA1

    MickeyA1 Bit poster

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    I am running Windows 10 Pro Insider Preview(21296.1000) via the Parallels Technical Preview - latest update as of this writing. I am trying to connect 2 USB devices to this VM. One is a weather station via Acurite PC Connect software and the other is a Uniden Scanner - basically shows up as Comm Port 3 in the ProScan software and Device Manager. Both work fine independently. However, when I try to connect both by going into the USB Controller and selecting both of them I a get the message as follows.
    The USB device cannot be connected.
    There are no virtual USB host controller ports available in "Windows 10" for the "Chaney Instrument #2" device to be connected.
    The Comm 3 port is already selected and in use when selecting. I can see it in the Device Manager. Interestingly when I only have the Chaney Instrument connected, I have not been able to find in the Device Manager. Not sure where it is really hiding as I thought it would have been a comm port as well. I know from the old days, you could run two serial device as long as they were either on 1/3 and 2/4. I even suspected something like this but not finding the Chaney basically was telling I couldn't change the port. Anyways - this message is from Parallels Desktop and not Windows.
    Any ideas and thoughts would be appreciated? Do I really have a need to run both at once - not really - I just feel challenged.

    --Mickey A
     
    MikeB39 and huac like this.
  2. MikeB39

    MikeB39 Bit poster

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    In the same boat here. Disappointed that support hasn't been more active in helping us understand the issue. I will 'watch' this post!!
     
    huac and MickeyA1 like this.
  3. huac

    huac Bit poster

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    在同一条船上。对支持没有更积极地帮助我们理解这个问题感到失望。
     
  4. huac

    huac Bit poster

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    在船上。失望地,支持没有更积极地帮助我们理解这个问题。
     
  5. Elric

    Elric Parallels Team

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    1,718
    This should work in just realeased PD 16.5
     
  6. huac

    huac Bit poster

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    最新的PD16.5中还是USB设备无法连接
     
  7. Elric

    Elric Parallels Team

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    1,718
    please reproduce the issue. Then go to Parallels Desktop Help -> Send Technical data; post here the report number
     
  8. AsgerL

    AsgerL Bit poster

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    3
    I have same error
     
  9. Elric

    Elric Parallels Team

    Messages:
    1,718
    Hi
    please reproduce the issue. Then go to Parallels Desktop Help -> Send Technical data; post here the report number
     
  10. MatthewM27

    MatthewM27 Bit poster

    Messages:
    1
    Mine happens frequently. Technical report number to Parallels is 405659928.
     

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