Veyon Community Forum

We're happy to announce Veyon 4.10.4, the fourth maintenance release of Veyon 4.10.x. This release primarily fixes a performance regression in Veyon Master resulting from the thumbnail layouting improvement in 4.10.3. Additionally it's now possible to specify a prefix or suffix by which to extend the identity of guest users automatically such that for example valid exam users can easily be recognized. All downloads for this release are available in the download area. A complete list of changes in detail can be found below: Core Improve robustness by using std::vsnprintf() instead of sprintf()/snprintf() Add various size checks when receiving usernames, signatures and tokens Master Fixed performance regression introduced with improved thumbnail layouting in 4.10.3 Added support for extending guest user identities with prefix or suffix Plugins Demo: don't lock the master computer when sharing a user's screen fullscreen (#1126) Linux Added Nix flake and NixOS module Windows 3rdparty: UltraVNC: update to 1.8.2.3

Buenas a todos Tengo veyon actualizado a versión 4.11 tanto en master como en clientes. La utenticación la hago mediante certificados. Y no funciona la opción Demo (proyectar pantalla), pues se queda con el simbolo del círculito dando vueltas sin proyectar en los clientes lo que le mandas. [image: 1789118472795-captura-de-pantalla-2026-09-10-123619.png] Si ponemos autenticación por inicio de sesión si que funciona. Si ponemos versión anterior 4.8 con autenticación de certificados si que funciona. ¿Le sucede esto a alguno más? ¿Alguien sabe como resolverlo? Gracias

@ahmod333 Confirming this issue in a school environment. Environment: Windows 11 Pro 26H2 (build 26300.9711) Microsoft Defender platform 4.18.26090.9 Veyon 4.11.x (also tested with latest 4.11.3 – same result) Symptoms: Screen monitoring and remote control work fine Text message, open website, file transfer and run program don't work veyon-worker.exe is not running; VeyonServer.log repeats every ~5 seconds: [ERR] WindowsCoreFunctions: OpenProcess() 0 [WARN] FeatureWorkerManager: failed to start worker for feature QUuid("{8e997d84-ebb9-430f-8f72-d45d9821963d}") Observations: DefenderSessionHelper.exe runs in the user session and cannot be terminated even by an admin (Access denied). A second PC with the identical Windows build and Defender platform (DefenderSessionHelper.exe also running) works fine, so it seems to depend on process enumeration order at logon. Running "MpCmdRun.exe -RevertPlatform" fixed the problem immediately (no reboot needed); the text message was delivered right after. Workaround applied: RevertPlatform + Set-MpPreference -PlatformUpdatesChannel Delayed.

Hi Team Looking for an implementation partner who have done some good installations for our school project. Anyone interested pls reach out to me 'jeelani@gmail.com' Thanks Jeelani