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UltraVNC 1.4.3.0 crashes during connect request while connected to VPN

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palladium
Posts: 2
Joined: 2023-09-08 13:13

UltraVNC 1.4.3.0 crashes during connect request while connected to VPN

Post by palladium »

Hi, all!

I'm using UltraVNC server on my PC which has IPv4 split tunneling excluded when connected to corporate VPN. Therefore I'm using IPv6 UltraVNC (win10) to connect to my pc from other pc on my home network. Lately, winvncipv6 began crashing on incoming connection request while connected to VPN. Visiting logs shows exception code 0xc0000409. The executable just crashes. My question is whether this could be related to some policy the VPN maintainers could enable to block VNC while connected to VPN. The ports are not blocked by firewall or anything else. There is a connection for an instant moment and then winvncipv6 crashes.

Would be glad for any advices!

Thanks.
palladium
Posts: 2
Joined: 2023-09-08 13:13

Re: UltraVNC 1.4.3.0 crashes during connect request while connected to VPN

Post by palladium »

I found the issue after short debugging. It is related to IPv6 addresses string length. Opened a ticket for it.
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