This change log lists new features, edits, fixes etc. made to major 3CX Video Conferencing releases. Some updates, additions and fixes may not be listed. 3CX is constantly improving video conferencing and may implement fixes prior to any official release.

3CX MCU 20.0.8.39041 Jan 2026

  • OpenSSL Updates

3CX MCU 20.0.1.36491, Client 20.0.1.36317 & RemoteControl, Aug 2024

  • Resolved an issue where a participant could reject another participant's entry.
  • Improved controls for remote control requests between participants.
  • Adjusted permissions for marking others' questions as answered.
  • Restricted asking questions outside of Q&A mode.
  • Updated co-host permissions to prevent meeting terminations.
  • Avoided link commands for users who cannot present.
  • Checked roles when receiving a kick_participant command.
  • Fixed version comparison.
  • Avoided forwarding media for users with disabled properties.
  • Added proxy logging.
  • Fixed memory leak.
  • Added public field to the whiteboard polling report object.

3CX MCU 20.0.1.XXXX, Client 20.0.1.XXXX & RemoteControl, June 2024

  • Updated to OpenSSL 3.1.6.
  • Added third.txt.
  • Changed internal regexes.
  • Anonymized chat, questions, and internal parameters.
  • Updated user permission levels.
  • Replaced MD5 with SHA512 in v2 API.
  • Changed cipher suite, preferring server priority.
  • Reduced verbosity of invalid JSON commands.
  • Added validation for role commands.
  • Implemented LogAnonymizer.
  • Updated ciphers to more secure options.
  • Updated Poco, OpenSSL, and libsrtp.
  • Fixed windows shrinking UI issue (workaround).
  • Fixed Windows title.
  • Added translations.
  • Created installation setup script for RemoteControl.

3CX MCU 20.0.0.XXXX, Client 20.0.0.XXXX & RemoteControl, May 2024

  • Implemented uninstallation for RemoteControl.
  • Added third.txt and EULA for RemoteControl.
  • Obfuscated Dart code for RemoteControl.

3CX WebClient 20.0.2.XXXX, July 2024

  • Displayed device permission grant phases.
  • Implemented a workaround for Google Translate.
  • Fixed text resize in the whiteboard.
  • Changed presenters' visibility.
  • Improved survey UI.
  • Added features link in survey dialog.
  • Fixed translations of dynamic parts at login.
  • Added language selector on the login page.
  • Implemented manual language switcher.

3CX WebClient 20.0.1.XXXX, June 2024

  • Removed the second sentence from the RemoteControl uninstall dialog.
  • Updated the RemoteControl installation dialog for the new Flutter RC (without the service).
  • Hid the survey during MCU onboarding.
  • Changed domains for URL beaming.

3CX WebClient 20.0.0.XXXX, May 2024

  • Added EULA reference.
  • Fixed typo in CardVideoOutServer class in analyzer.
  • Removed iceServers from troubleshooting.
  • Removed RTT from audio stats.
  • Added audiometerUrl to the self-test.
  • Updated third-party components: postcss, jsonata, pdfjs.
  • Added the ability to beam a meeting URL from your phone to another device.