After more 2 000 000 (two million) views on forum for 1.5.0.x development versions... and 1.6.1.0, 1.6.3.0-dev versions
A new stable version, UltraVNC 1.6.4.0 and UltraVNC SC 1.6.4.0 have been released: https://forum.uvnc.com/viewtopic.php?t=38095
Feedback is always welcome

2026-04-01: After 1.7.x, 1.8.x release builds need tests and feedback: https://forum.uvnc.com/viewtopic.php?t=38158

2026-03-11: CVE-2026-3787 and CVE-2026-4962 - Clarification: https://forum.uvnc.com/viewtopic.php?t=38155

2025-12-02: We need help: English Wikipedia UltraVNC page has been requested to deletion: https://forum.uvnc.com/viewtopic.php?t=38127
Any help is welcome to improve the UltraVNC page and/or to comment on the Wikipedia Talk page

2025-05-06: Forum password change request: https://forum.uvnc.com/viewtopic.php?t=38078

2023-09-21: Important: Please update to latest version before to create a reply, a topic or an issue: https://forum.uvnc.com/viewtopic.php?t=37864

Development: UltraVNC development is always here... Any help is welcome
Feedback is welcome

Help is very needed for:
Windows ARM/ARM64 support: https://forum.uvnc.com/viewtopic.php?t=38163 / https://github.com/ultravnc/UltraVNC/issues/346
macOS support: https://forum.uvnc.com/viewtopic.php?t=38164 / https://github.com/ultravnc/UltraVNC/issues/347
Linux support: https://forum.uvnc.com/viewtopic.php?t=38165 / https://github.com/ultravnc/UltraVNC/issues/348
*BSD support: https://forum.uvnc.com/viewtopic.php?t=38166 / https://github.com/ultravnc/UltraVNC/issues/349
*Solaris support: https://forum.uvnc.com/viewtopic.php?t=38167 / https://github.com/ultravnc/UltraVNC/issues/350

Saved .vnc files cannot be opened

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tom1
Posts: 1
Joined: 2026-04-08 11:46

Saved .vnc files cannot be opened

Post by tom1 »

Hello and thank you for welcoming me to the forum,

I'm currently having trouble opening saved .vnc files. Since switching to UltraVNC, I haven't been able to open my saved sessions.
I also can't open sessions that I created using UltraVNC.
I will attach the error message.

Thanks in advance for your help. See you next time
Tom


Error Message:

UltraVNC info

Invalid VNC Server specified.
Usage includes:
vncviewer [/8bit] [/swapmouse] [/shared] [/belldeiconify]
[/listen [portnum]] [/fullscreen] [/viewonly] [/notoolbar]
[/scale a/b] [/config configfile] [/serverdisplay]
[/emulate3] [/quickoption n] [/serverscale n]
[/askexit] [/user msuser] [/password clearpassword]
[/nostatus] [/dsmplugin pluginfile.dsm] [/autoscaling]
[/autoreconnect delayInSeconds]
[/reconnectcounter number_reconnect_attempt]
[/nothey [s]] [/proxy proxyhost [portnum]] [/256colors] [/64colors]
[/8colors] [/8greycolors] [/4greycolors] [/2greycolors]
[/encoding [xz|zyxw|zr|zwy|tight|zlib|zlibhex|ultra|ultra2|corre
|rre| raw]
[/encodings xz zrle ...] (in order of priority)
[/autocacceptincoming] [/autocacceptnodsm] [/disablesponsor] [/InfoMsg "Messages need quotes"]
[/requireencryption] [/enablecached] [/throttlemouse n]
[/socketkeepalive timeout n]
[/gmoneme] [/hidedesframer]

For full details see documentation.
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