After more 1 000 000 (one 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 welcome

Celebrating the 22th anniversary of the UltraVNC (25th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38031

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

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

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

Join us on social networks and share our announcements:
- Website: https://uvnc.com/
- GitHub: https://github.com/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

UltraVNC 1.6.1.0 and UltraVNC SC 1.6.1.0 - Feedbacks

counselour
Posts: 1
Joined: 2025-05-24 11:06

Re: UltraVNC 1.6.1.0 and UltraVNC SC 1.6.1.0 - Feedbacks

Post by counselour »

@Rudi De Vos: I just updated from 1.4.6 to 1.6.1.0.
I ssh tunnel to a vncserver at work (TigerVNC) which works just fine with 1.4.6, but it does not with 1.6.1.0. I get the following error when I attempt to connect:
Handshake aborted. The context has expired and can no longer be used (0x90317)
Does this mean the TigerVNC server is too old?
lwc
40
40
Posts: 99
Joined: 2006-08-08 11:00

Re: UltraVNC 1.6.1.0 and UltraVNC SC 1.6.1.0 - Feedbacks

Post by lwc »

lwc wrote: 2025-05-16 23:49
Rudi De Vos wrote: 2025-05-16 22:56 remove dev : Will do, just spending all my time on tracing bug reports
It wasn't about the word, it was about how to know if it's stable or not. I thought maybe it was accidentally the old file from the dev version.
@Rudi De Vos: Thanks for fixing! :-* BTW, it's still like that in v1.6.0.0
Ludovic
Admin & Developer
Admin & Developer
Posts: 140
Joined: 2021-12-28 18:55

Re: UltraVNC 1.6.1.0 and UltraVNC SC 1.6.1.0 - Feedbacks

Post by Ludovic »

@Rudi De Vos has created a 1.6.3.0-dev build, please test it:
- viewtopic.php?t=38091
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/
zeiseiwogn
Posts: 2
Joined: 2021-09-06 05:27

Re: UltraVNC 1.6.1.0 and UltraVNC SC 1.6.1.0 - Feedbacks

Post by zeiseiwogn »

Is there a way with the current MSI-Install file to disable the Desktop Icons during the install?
dichvu
Posts: 5
Joined: 2025-06-05 11:25

Re: UltraVNC 1.6.1.0 and UltraVNC SC 1.6.1.0 - Feedbacks

Post by dichvu »

Why can't UltraVNC 1.6.1.0 set preset password with syntax password="" when running silent .msi file?
User avatar
andr_ua
Posts: 3
Joined: 2025-04-28 05:16

Re: UltraVNC 1.6.1.0 and UltraVNC SC 1.6.1.0 - Feedbacks

Post by andr_ua »

packagefactory wrote: 2025-05-08 12:52 @Rudi De Vos: The QuerySetting no longer works as it did until 1.4.3.6.
We have tested QuerySetting 2 and 4 in combination with Authost.

4 works according to the following scheme:
+:"accept"; ?:"query"; -:"reject"
Up to version 1.4.3.6 it worked as follows according to the documentation:
4="+:Query, ?:Reject, -:Reject”

2 works according to the following scheme:
+:"accept": ?:"reject"; -:"reject"
Up to version 1.4.3.6 it worked as follows according to the documentation:
2="+:Accept, ?:Query, -:Reject [Default]”

Is there a current documentation or is this a bug?
I'm very sorry, but i don't understand few moments:
1 - how i can disable in silence mode language selecting dialod window? (if I install msi on remote host by cmd i can't do that, because installation is stucking!)
2 - I using (for 1.4.x version) /qn /NORESTART SERVERVIEWER=3 SERVICE=1 PASSWORD="1234" - this silent cmd parameters. How I can now do this?

Thanks!
User avatar
ElSanchez
Posts: 1
Joined: 2025-06-26 10:08

Re: UltraVNC 1.6.1.0 and UltraVNC SC 1.6.1.0 - Feedbacks

Post by ElSanchez »

Hello.

I compile UltraVNC with Windows XP support, but client doesn't work with various servers on Windows XP. Modern OS - OK.

Servers:
1.2.4.0: assertion assert(len <= end - ptr) occurred when switch to XZ/XZYW encoder
Callstack:

Code: Select all

vncviewer.exe!ClientConnection::zrleDecode24ALE<rdr::ZlibInStream>(int x, int y, int w, int h, rdr::InStream * is, rdr::ZlibInStream * zis, unsigned int * buf) Line 183 / Line 204
vncviewer.exe!ClientConnection::zrleDecode(int x, int y, int w, int h, bool use_zstd) Line 134
vncviewer.exe!ClientConnection::ReadScreenUpdate() Line 6210
vncviewer.exe!ClientConnection::run_undetached(void * arg) Line 5467
vncviewer.exe!omni_thread_wrapper(void * ptr) Line 518
vncviewer.exe!thread_start<unsigned int (__stdcall*)(void *),1>(void * const parameter) Line 97
If skip previous assertion exception occurred in rdr::ZlibInStream::decompress()
When bytesIn reaches 0 next call of rdr::ZlibInStream::decompress() raise exception because inflate return Z_BUF_ERROR.
Callstack:

Code: Select all

vncviewer.exe!rdr::ZlibInStream::decompress() Line 129
vncviewer.exe!rdr::ZlibInStream::overrun(int itemSize, int nItems) Line 105
vncviewer.exe!rdr::InStream::check(int itemSize, int nItems) Line 56
vncviewer.exe!rdr::InStream::readOpaque24A() Line 116
vncviewer.exe!ClientConnection::zrleDecode24ALE<rdr::ZlibInStream>(int x, int y, int w, int h, rdr::InStream * is, rdr::ZlibInStream * zis, unsigned int * buf) Line 135
vncviewer.exe!ClientConnection::zrleDecode(int x, int y, int w, int h, bool use_zstd) Line 134
vncviewer.exe!ClientConnection::ReadScreenUpdate() Line 6210
vncviewer.exe!ClientConnection::run_undetached(void * arg) Line 5467
vncviewer.exe!omni_thread_wrapper(void * ptr) Line 518
vncviewer.exe!thread_start<unsigned int (__stdcall*)(void *),1>(void * const parameter) Line 97
1.3.2.0: works when switch to any encoders, exception occurred on exit
1.4.2.0, 1.4.3.1, 1.4.3.5, 1.4.3.6, 1.6.1.0: exception occurred on start
::read(fd, buf, len) return -1 because recv return WSAECONNRESET
Callstack:

Code: Select all

vncviewer.exe!rdr::FdInStream::readWithTimeoutOrCallback(void * buf, int len) Line 302
vncviewer.exe!rdr::FdInStream::overrun(int itemSize, int nItems) Line 154
vncviewer.exe!rdr::InStream::check(int itemSize, int nItems) Line 56
vncviewer.exe!rdr::InStream::readU8() Line 65
vncviewer.exe!ClientConnection::run_undetached(void * arg) Line 5417
vncviewer.exe!omni_thread_wrapper(void * ptr) Line 518
vncviewer.exe!thread_start<unsigned int (__stdcall*)(void *),1>(void * const parameter) Line 97
1.4.0.9: exception occurred on start
::read(fd, buf, len) return -1 because recv return WSAECONNRESET
Callstack:

Code: Select all

vncviewer.exe!rdr::FdInStream::readWithTimeoutOrCallback(void * buf, int len) Line 302
vncviewer.exe!rdr::FdInStream::overrun(int itemSize, int nItems) Line 154
vncviewer.exe!rdr::InStream::check(int itemSize, int nItems) Line 56
vncviewer.exe!rdr::InStream::readBytes(void * data, int length) Line 101
vncviewer.exe!rdr::FdInStream::readBytes(void * data, int length) Line 109
vncviewer.exe!ClientConnection::ReadExact(char * inbuf, int wanted) Line 6748
vncviewer.exe!ClientConnection::ReadServerInit(bool reconnect) Line 3784
vncviewer.exe!ClientConnection::DoConnection(bool reconnect) Line 823
vncviewer.exe!ClientConnection::Run() Line 750
vncviewer.exe!VNCviewerApp32::NewConnection(bool Is_Listening) Line 88
vncviewer.exe!WinMain(HINSTANCE__ * hInstance, HINSTANCE__ * hPrevInstance, char * szCmdLine, int iCmdShow) Line 828
VS2022 solution download link: https://www.mediafire.com/file/9m29xbsf ... 10.7z/file.
tormenta099
Posts: 3
Joined: 2025-06-30 15:26

Re: UltraVNC 1.6.1.0 and UltraVNC SC 1.6.1.0 - Feedbacks

Post by tormenta099 »

Saludos, pase de la versión UltraVNC 1.4.3.0 a UltraVNC 1.6.1.0
En esta nueva versión tengo un problema y es que cuando yo me conecto a la maquina de otro usuario no le sale la opción de aceptar o rechazar, solo se conecta sin que el usuario seleccione la opción.

En la interfaz gráfica ya esta configurado para que aparezca la ventana de dialogo y también en el archivo ini esta configurado para que el usuario le aparezca la ventana de dialogo.
Ubicacion del archivo. C:\ProgramData\UltraVNC
QuerySetting=2
QueryTimeout=10
QueryDisableTime=1
QueryAccept=0
QueryIfNoLogon=0

Destacar que en la parte gráfica en la opción de "Rules o reglas" ya tengo las opciones seleccionada para que muestre la ventana de dialogo y aun si no sale nada.

Favor alguien que me pueda ayudar a resolver esta situación.
Ludovic
Admin & Developer
Admin & Developer
Posts: 140
Joined: 2021-12-28 18:55

Re: UltraVNC 1.6.1.0 and UltraVNC SC 1.6.1.0 - Feedbacks

Post by Ludovic »

@Rudi De Vos has created a 1.6.4.0 build, please update and please do a feedback:
- viewtopic.php?t=38095
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/
Ludovic
Admin & Developer
Admin & Developer
Posts: 140
Joined: 2021-12-28 18:55

Re: UltraVNC 1.6.1.0 and UltraVNC SC 1.6.1.0 - Feedbacks

Post by Ludovic »

Dear all,

I do a comment on this old feedbacks topic, it is possible that your historical feedbacks have been forgotten (yes, badly, it is possible).

Please try the latest UltraVNC version and do not hesitate to publish your feedbacks, it can be same that previous which have not been solved...
- viewforum.php?f=56

All your remarks are important...

You can look on opened/closed tickets, search, comment or create a new ticket on GitHub too:
- https://github.com/ultravnc/UltraVNC/issues
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/
Locked