UltraVNC

@brainshell: Thanks, I was able to repeat on Windows 11, not on Windows 10.
1 line to fix...
Please test
https://www.uvnc.eu/download/1800/vncviewer1821.zip

The password is saved in ultravnc.ini.

For 1.6.4.0:
Sometimes write permission can block writing to password to the file
Copy UltraVNC Server (winvnc.exe) to a temporary folder
Run UltraVNC Server as Application
Set a password, and other settings that you want
This create a new .ini file in the ...

Running as Service:
Guest user: When he open the systray and click on settings -> nothing happen, it doesn't open
When "Administration password" is configured and [v] user can access is configured -> clicking "Settings" asks "Administration password" to open.

Only when the user is a local ...

Sonderzzz : I don't understand your question.

When UltraVNC runs as Service, the .ini file is in %ProgramData% and it can be edited locally by someone with permission to write to that file.
A user can not change that file unless he is administrator. If the user is administrator, he does what he ...

no, it was made that way.

@proger16: Thanks... This was a hard one!

proger16 : Thanks for your tests.
Windows 7: I found, it's the new lib we used to zip/unzip.
Createfile2 should have never been used for Desktop apps, even not when using Windows 11, forced CreataFileW.

Single .EXE now works from Windows 7 (Windows Server 2008 R2) to Windows 11.

Changes ...

All FileTransfer... and duplicate list fixed.
Native language, possible fixed, could not repeat it... make sure that UltraVNC Server and UltraVNC Viewer are latest version.

Downloads:
- https://uvnc.eu/download/1800/UltraVNC_1810_x86_Setup.exe
- https://uvnc.eu/download/1800/UltraVNC_1810_x64_Setup ...

UI vncviewer is unicode, not winvnc.
SC is winvnc -> no unicode changes for UI

@proger16: Thanks for the feedback.

Solved:
\ ...
[C]
...
new folder

All filetransfer issue's should be fixed
Downloads:
- https://uvnc.eu/download/1800/UltraVNC_ ... _Setup.exe
- https://uvnc.eu/download/1800/UltraVNC_ ... _Setup.exe
- https://uvnc.eu/download/1800/UltraVNC_1809.zip

@proger16: Mutual exclusion added in UI
edge case "if changes direct in settings" also covered

will be in 1.8.0.7

Version 1.8.0.6 – April 2026
- FileTransfer folder transfer fix
- OpenSSL 3.6.2
- libsodium 1.0.22
- setpasswd/createpasswd write to %programdata% instead of current folder

Downloads:
- https://uvnc.eu/download/1800/UltraVNC_1806_x86_Setup.exe
- https://uvnc.eu/download/1800/UltraVNC_1806_x64_Setup ...

Folder FT is fixed: 1.8.0.5 was not transferring folders.

stefanorossetti : The password is still in ultravnc.ini.

That's now in %ProgramData% and not longer in the %ProgramFiles% folder.

setpasswd sets the password in the current folder, for now, you need to copy it, temporary, to the same ...

UltraVNC Changelog

Version 1.8.0.5 – April 2026
- FileTransfer needed bigger buffers for UTF-8/UTF-16
- UI Unicode fixes
- Unicode logging
- Baseline lib updates:
* libjpeg-turbo 3.1.4.1
* liblzma 5.8.3
* libsodium 1.0.21
* zlib 1.3.1
* zstd 1.5.7
* openssl 3.6.1

Downloads:
- https://uvnc.eu ...

UltraVNC Viewer: 1.8.0.4
UltraVNC Server: < 1.8.x
- Unicode is disabled as UltraVNC Server doesn't support it
- ANSI mode, does not support international chars

This behave the same as a UltraVNC Viewer 1.4.x or 1.6.x
You see ?????? instead of chars and natural ??? isn't find to copy at all.
Normal ...

RDP: I think it always worked like that. It requires a review but that's not for now. As far is a remember, the Server sometimes need to restart the winvnc in another desktop. To avoid to pass the RDP selection each time some trigger was added, only doesn't work 100%.

Viewer closing. If you can ...

@basso, @wojtek: Mentioned issue's fixed.

Downloads:
- https://uvnc.eu/download/1800/UltraVNC_ ... _Setup.exe
- https://uvnc.eu/download/1800/UltraVNC_ ... _Setup.exe
- https://uvnc.eu/download/1800/UltraVNC_1804.zip

Thanks for the feedback.
Missed thoose Unicode convertions, and DSM Plugin in listen mode uses other code, that also needed an update.

UltraVNC 1.8.0.3:
- Keyboard changes: Sync Server and Viewer keyboard handling, this should fix:
❌ Incorrectly handles Cyrillic (0x06a1-0x06ff) - treats as Unicode instead of X11 keysym
❌ Incorrectly handles Greek (0x07a1-0x07f9)
❌ Incorrectly handles Hebrew (0x0cdf-0x0cfa)
❌ Incorrectly handles ...

"Use Encryption" plugin selection and connect -> Fixed

Confirmed: Pressing "Config encryption plugins" button still give the error.

Download:
- https://uvnc.eu/download/1800/UltraVNC_1802_x64_Setup.exe
- https://uvnc.eu/download/1800/UltraVNC_1802_x86_Setup.exe
- https://uvnc.eu/download/1800 ...

Tested and fixed:
- Plugin loading (proper convert the unicode path and pluigin name)
- Password commandline needed to be proper converted to ansi

Updated to 1801, to make sure we test all the same:
- https://uvnc.eu/download/1800/UltraVNC_1801_x64_Setup.exe
- https://uvnc.eu/download/1800/UltraVNC ...

Thanks for testing...

Sorry for the errors, it seems that the unicode conversion of the viewer had some side effect
Viewer is now full unicode, i need to verify if all command lines, special passwords are proper passed.

And plugins also fail to load .... damm

If you find some other let me know ...

The problem was that the Unicode implementaion for Chat and FileTransfer also changed some ultravnc.ini code parts.
During testing I didn't see it as I didn't expected that Chat and FileTransfer changes would touch the service.

Thanks the feedback the problem is solved.

And also made a little ...

Thanks for the feedback
Damm "%ProgramFiles%\UltraVNC Team\UltraVNC Suite this should not be the path.

We have been playing to get UltraVNC passes the MS Store certification but folders should have stay the same.
To complex to upgrade.

1.8.0.0 offline

EDIT: Back online
Updated the files ...

Feedback for UltraVNC 1.8.X.X in this topic.

UltraVNC 1.8.2.1:
- https://uvnc.eu/download/1800/UltraVNC_1821_x64_Setup.exe
- https://uvnc.eu/download/1800/UltraVNC_1821_x86_Setup.exe
- https://uvnc.eu/download/1800/UltraVNC_1821.zip
- https://uvnc.eu/download/1800/UltraVNC_1821_x64_Setup.msi ...

kannweg0815 wrote: 2026-03-19 14:28 RDP mode is broken in 1.7.1.11.
In 1.7.1.6 it still worked.

Explain, what isn't working:
- RDP Server
- RDP session on a normal PC

The goal is that the new FT use protocol 3 when protocol 4 is not supported.

Information about CVE-2026-3787:
- https://www.cvedetails.com/cve/CVE-2026-3787/

Information about CVE-2026-4962 (duplicate of CVE-2026-3787):
- https://www.cvedetails.com/cve/CVE-2026-4962/

The prerequisites are significant:
- An attacker needs to place a fake cryptbase.dll in the application ...

Don't get copy/paste proper working.

Update FT window:
- unicode support
- unaccessible folder are red

UltraVNC 1.7.1.10-dev:
- https://uvnc.eu/download/1710/UltraVNC_17110-dev.zip
- https://uvnc.eu/download/1710/UltraVNC_17110_x64_Setup.exe
- https://uvnc.eu/download/1710/UltraVNC_17110_x86_Setup ...

I need to work as RDP.
CTRL+C just inform Server.
CTRL+V Server need to request Viewer to send file.
A progress dialog needs to show what's going on.

Not finished, redesiging...