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

Disable has been setup without Authentication

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Simple_Mind
Posts: 3
Joined: 2022-02-27 09:43

Disable has been setup without Authentication

Post by Simple_Mind »

Hello,

I'm using UltraVNC only for my PCs at home.

I configured the UltraVNC Server without password.

When I use UltraVNC Viewer, I get the message:

Code: Select all

The Server has been setup without Authentication, do you trust this Server?
Is there a way to disable this message since I trust all my PCs? ;-)
Rudi De Vos
Admin & Developer
Admin & Developer
Posts: 7021
Joined: 2004-04-23 10:21
Contact:

Re: Disable has been setup without Authentication

Post by Rudi De Vos »

https://forum.uvnc.com/viewtopic.php?p=110487#p110487

UltraVNC Server commandline option:

Code: Select all

AllowUntrustedServers
ultravnc.ini file:

Code: Select all

AllowUntrustedServers = 1
UltraVNC Server GUI -> Security tab
Uncheck:

Code: Select all

[_] only servers with password
UltraVNC links (join us on social networks):
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- Forum: https://forum.uvnc.com/
- GitHub sourcecode: https://github.com/ultravnc/UltraVNC
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
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Simple_Mind
Posts: 3
Joined: 2022-02-27 09:43

Re: Disable has been setup without Authentication

Post by Simple_Mind »

Hello, tried the three solutions without success.

UltraVNC Server commandline option:

Code: Select all

AllowUntrustedServers
How do I set a commandline?
Tried to put it behind the link to vncviewer.
vncviewer started to look for a Server "AllowUntrustedServers"

ultravnc.ini file:

Code: Select all

AllowUntrustedServers = 1
Put the line in the .ini and in the options.vnc without change

UltraVNC Server GUI -> Security tab
Uncheck:

Code: Select all

[_] only servers with password
I have 1.3.6 version.
There is no option as mentioned above.
"Only allow encrypted Servers" is unchecked.
Rudi De Vos
Admin & Developer
Admin & Developer
Posts: 7021
Joined: 2004-04-23 10:21
Contact:

Re: Disable has been setup without Authentication

Post by Rudi De Vos »

The link go to the 1.3.7 development build.
It wil be in the next update -> 1.3.8 or in the development build, see the provided link.
UltraVNC links (join us on social networks):
- Website: https://uvnc.com/
- Forum: https://forum.uvnc.com/
- GitHub sourcecode: https://github.com/ultravnc/UltraVNC
- Mastodon: https://mastodon.social/@ultravnc
- Bluesky/AT Protocol: https://bsky.app/profile/ultravnc.bsky.social
- Facebook: https://www.facebook.com/ultravnc1
- X/Twitter: https://x.com/ultravnc1
- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
- uvnc2me: https://uvnc2me.com/
Simple_Mind
Posts: 3
Joined: 2022-02-27 09:43

Re: Disable has been setup without Authentication

Post by Simple_Mind »

Oh no!
Overlooked the version number :oops:
Now it's working.
Thank you.
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