Constant disconnects and auto-reconnects

Trying to connect Mac to Mac.  All setup is fine, initial connection is fine.  The problem is I get constant disconnects and automatic reconnects.  It's annoying. Standard parameters on client and server. A possible wrinkle is that I'm using ExpressVPN on the client side.  I have logs on both sides, nothing obvious to me.  I've tried diddling the KeepAlive parameters, haven't found something that works. Who has had this problem and found a solution? Many thanks!

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12 comments
  • Official comment

    Hi Ron,

    I can see you've now opened a ticket with our product support team, we'll work with you there to resolve the issue.

    Thanks,

    Jack

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  • I removed ExpressVPN, no change, still get disconnects and auto-reconnects.

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  • I have the same problem since about the same time as the original post.

    I use VNC Server on Mac with VNC Viewer on Windows 10.

    I have also opened a ticket, but nothing has come out of it yet.

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  • This work-around solved my problem (with Mac viewer):

    1) Open VNC Viewer's Preferences
    2) Click Expert
    3) Enter this into the Filter box: _CloudConnTypes=UdpRelay,TcpRelay
    4) Click Set Parameters, then OK/Apply
    5) Try a new connection to VNC Server

    It forces relay connections; direct connections were failing for me.

    Note: the default value for _CloudConnTypes=PeerToPeer,UdpRelay,TcpRelay

     

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  • Thank you, 
    I shall try it out. 

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  • I did that it wont work somehow, everything is in order with network and router and computers are up to date so i don't think it is user problem far from it.

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  • Klaus Bojesen Nielsen

    I have a completely different set up now, but I remember that I had success with the solution put forward by Ron.

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  • There's clearly a bug somewhere in the path. Even if the bug is Apple's, I think RealVNC would need to track it down in the stacks.

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  • Hi Jack N,

    I hope you will be doing good!

    I have an issue that my real VNC viewer is constantly disconnecting in few minutes when access from window to Linux remotely please can you help me to resolve this issue will be very thankful to you. 

    Thanks and regards,

    Muhammad Irfan Khan

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  • This issue also occurs with Windows 10 Viewer and Server, as well as Ubuntu Viewer and the same server.

     

    Ron Voss' workaround has fixed the issue for me. Thanks, Ron!

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  • Attemping to reconnect to VNC Server...

    ZSTD_decompressstream: Src size is incorrect (-72)

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