Hello
I've been using UVNC SC for years (thx for this tool, btw!) and now I'm triing to switch to PCHelpWare2 in the hopfe that the performance is better.
My main problem is that I can't add custom splashscreen backgrounds with the SC-Creator.
As soon as I chose a custom BMP, the preview turns grey & if I try to compile (Create SC), the Viewer Application crashes.
First I tought that something with my custom BMPs is wrong but the I tried to browse for the default ones (splash.bmp & splash2.bmp in AppData/Roaming/uvnc/pchw/ref) and even if I chose them, the same problem occurs...
Besides this issue, I have some general questions:
- When I first started the viewer, there were two IPs, I guess those are the IPs for the "mediation servers". I assume that these two servers are provided by UVNC. Are chances good, that they'll be up and running for some years to come?
- Could I also provide a 'private' mediation server? (and if yes: is it possible to do it trough a DynDNS-Domain, since I don't have a fix IP)
- There are two IPs. How does the program decide which one is contacted? (I assume that it tries the first and then the second, if the first doesn't answer? If yes: how long ist the timeout?)
- In the config I read about "MYGROUPOFATLEAST16CHARS", now unfrotunately I didn't read this before setting up the viewer for the first time. So I chose a group with less than 16 chars. Still seems to work. Is it a problem?
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
2025-12-05: Celebrating the 23th anniversary of the UltraVNC (26th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38130
2025-12-03: Could you please complete our poll/survey? Renaming UltraVNC files and service to be more clear: https://forum.uvnc.com/viewtopic.php?t=38128
There was a problem to vote, it is solved now! Thanks in advance!
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
Join us on social networks and share our announcements:
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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
2025-12-05: Celebrating the 23th anniversary of the UltraVNC (26th anniversary since the laying of the foundation stone): https://forum.uvnc.com/viewtopic.php?t=38130
2025-12-03: Could you please complete our poll/survey? Renaming UltraVNC files and service to be more clear: https://forum.uvnc.com/viewtopic.php?t=38128
There was a problem to vote, it is solved now! Thanks in advance!
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
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
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- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
Splash Image & other questions
- Rudi De Vos
- Admin & Developer

- Posts: 6980
- Joined: 2004-04-23 10:21
- Contact:
Re: Splash Image & other questions
-We try to keep 2 servers online, only one is required to connect. The servers doesn't use a lot bandwidth as they are only
used to create the initial connection.
-You can install and use your own server, but it need to be a direct internet connected server.
I never tested it with a dynDNS, but if the lookup works ok it should work.
*server+viewer send info( ip/port) to both mediated servers ( simultanious)
*connection request: the viewer send a " i want to connect" to both servers
*The fastest server that answer is used ( udp: you listen to all and send to all without timeouts)
The only thing the mediator servers do is to record name/ip/port and to exchange ip/port when a server/viewer has the same name.
*16 chars is just requested to make sure you have something unique.
If 2 people use the same group, they see the other person servers.
I need to check the bmp splash screens...
used to create the initial connection.
-You can install and use your own server, but it need to be a direct internet connected server.
I never tested it with a dynDNS, but if the lookup works ok it should work.
*server+viewer send info( ip/port) to both mediated servers ( simultanious)
*connection request: the viewer send a " i want to connect" to both servers
*The fastest server that answer is used ( udp: you listen to all and send to all without timeouts)
The only thing the mediator servers do is to record name/ip/port and to exchange ip/port when a server/viewer has the same name.
*16 chars is just requested to make sure you have something unique.
If 2 people use the same group, they see the other person servers.
I need to check the bmp splash screens...
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- Reddit community: https://www.reddit.com/r/ultravnc
- OpenHub: https://openhub.net/p/ultravnc
- uvnc2me: https://uvnc2me.com/
- 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/
Re: Splash Image & other questions
Thank you for your fast reaction & the good answers!
To the Splashscreen-Issue I probably should add the information, that I tried it on Windows 8.1 (64bit).
To the Splashscreen-Issue I probably should add the information, that I tried it on Windows 8.1 (64bit).