UltraVNC

On the Viewer: After connecting, open the Connection info.
It will show Auth(RSA-2048) when client-key authentication is used (or whatever auth you selected creating the key).

Where vncviewer.exe looks for the pubkey (first match wins):
- .dsm module folder
- vncviewer.exe folder ...

fallel : The Viewer can have multiple keys, and use the key that the Server says he is using:
- Server 1 zzzx0399
- server 2 zzzx0398

The Viewer has 2 keys zzzx0399 and zzzx0398, this way the same Viewer can be used for the 2 Servers.

When Server name is not found, use the available... Just handy ...

fallel : I just tested myself:
- winvnc.exe
- vncviewer.exe
- 20260912_Server_ClientAuth.pubkey
- 20260912_Viewer_ClientAuth.pkey
-> OK

If I rename: 20260912_Viewer_ClientAuth.pkey to 20260912_Viewer_ClientAuth.pkey2
-> Key error

Need more info.
On the Server, activate logging and press show all ...

@lwc: noVNC is not a SC replacement; Where the Server connect to the Viewer.

@ddbivens: Clipboard was changed in 1.8.3.0 for HTML and dib from remote to local.

If time please test 1.8.3.0, release will be next week.

lwc : The noVNC is a replacement for the Java Viewer that wasn't working (unless you used a very old browser).

The Server has a building HTTP Server instead of using the Viewer: vncviewer.exe -connect myhost:5900.
You can use any browsers and connect using HTTP or HTTPS: http://myhost:5800.
This ...

Download:
- https://uvnc.eu/download/1800/UltraVNC_1830.zip

Based on the feedback from 1.8.2.9.

The biggest issue was that the libs we used (zlib, jpeg..) were compiled with 2 different compilers, causing several side effect.

Changes:
- Update translation files for novnc
- Clipboard fix ...

@andredisner: Thanks for the translation RC files, I will add them to the folder.

My buildmachine mixed libs for different version of Visual Studio, causing some encoder not to function.
Update will be online soon.

XZ XZYW ZYWRLE all use the XZ compression.

All other seems to work.

UltraVNC Extend Display


Turn a laptop or spare Windows PC into a real, full-screen extra monitor over your LAN:
- https://uvnc.com/products/ultravnc-extend-display.html

Does other has the same issue on a multi-monitor system?

I can not repeat it on my own multi-monitor Server, it has to be some edge case that trigger it.

UltraVNC Server 1.8.2.4
UltraVNC Viewer, all versions, failed?

Server is running as Service, you connect while the user is loggon on?
Is ...

Downloaded from MS Store?

@ThomasLevering: Because I forgot to update it.

Download 1.8.2.5-dev:
- https://uvnc.eu/download/1800/UltraVNC_1825.zip

This also include the resource patch from VersusBG.

All is fast tested, 1.8.2.5 is a dev version, needed confirmation that all works.

What's better?
- [OPTIONS] button
- arrow [show option]/[hide option] button

Does new ...

Current status small changes in git, not fully tested.
Some test builds will be made.

Changes:
- Support Legacy Viewer FT recv
- Multiple file delete is back active
- Avoid server restart when encryption is activated
- Horizontal scrolling (#369)
- Add \ as escape to enter a " in the password ...

1) you need to enable encryption on server and viewer
2) server need to configure the encryption
3) and only, when you use a key, you need to copy the viewer key to the viewer PC

Is a passphrase needed when using a key.
No, when you use a key you can even disable the vnc password as the key is used ...

UltraVNC SecureVNC Plugin Testing
For simplicity, I run server and viewer on the same PC to avoid firewall issues on both PCs.

Step 1 — Test Normal (Direct) Connection
Server: Settings → Security, enable [✓] Use encryption and select SecureVNCPlugin64.dsm (the only plugin in the x64 folder, which ...

Checkbox added on portal:

UAC Elevation
[v] Request UAC elevation (Admin rights)
Uncheck if the SC should run without Admin elevation

@ThomasLevering: Change added, thanks!

SkyBeam : Where is the ultravnc.ini folder?

When ultravnc.portable exists: <exe folder>\ultravnc.ini
No marker, running as Admin/Service: %ProgramData%\UltraVNC\ultravnc.ini
No marker, non-Admin (user config exists): %LocalAppData%\UltraVNC\ultravnc.ini
No marker, non-Admin (fallback ...

@SkyBeam: .cer was removed as people complained a old certificate was added, I will add it back.

The zip is on the download page
https://uvnc.com/downloads/ultravnc/167 ... 8-2-4.html
Page has
exe
msi
zip

Please replace the .dll files to test:
- https://uvnc.eu/download/1800/languages1824.zip

This is auto updated, based on estimated size of a text string.
Instead of using the EN sizes, they were recalculated based on translated text.

I can't verify each dialog for each language manual.

Please check.

@VersusBG: ResX Resource Manager is designed for .NET .resx files, not native C++ .rc files. So you can’t directly open or translate .rc files with it.
Will not work.

I imported the changes (pos/size) from EN in all other .rc files (automated).

Looks more complicated then initial though, The FileTransfer is GUI based, simulating the UI handling using commandline will take more time.

@VersusBG: Manual merged all except MSI.
Currently, I use a MSI Wrapper around the Inno Setup, so I don't need to maintain MSI and Inno Setup.
The MSI Wrapper also takeover all Inno Setup settings that are mssing in the MSI via a deployment project.

Look in the service manager if uvnc_service is installed. Commands to install the manual service:

Current not, all needed to be redone and it's still work in progress...
Good for telling the check doesn't work...

On hold for a few days, first need to fix some UltraVNC Server Viewer problems.

Perhaps this is the issue: Release summary - May 2026
⚠ Configuration path changed: ultravnc.ini is now stored in the GOOD standard Windows locations: %AppData%\UltraVNC\ for regular users and %ProgramData%\UltraVNC\ when Running as a Service or with admin rights.
If you create an empty file named ...