IceWarp EPOS 3 Server – Release Notes (Version 14.3.0.11)

IceWarp EPOS Server – Release Notes

Version 14.3.0.11 | September 1, 2026

This release focuses on stability, performance, and a few improvements to the core IceWarp Server, highlighted below.

Administrator Impact Summary

New Features

• none

Improvements & Optimizations

• none

Fixed Issues

• WEBCLIENT - Fixed the issue where Ctrl + drag & drop copy functionality was inconsistent in Chromium browsers.
• WEBCLIENT - Fixed the issue preventing users from downloading event attachments from Gmail.
• WEBCLIENT - Fixed issues with duplicated data in the month’s view and ensured that undisclosed events cannot be opened.

Security Updates

• none

Breaking Changes & Deprecations

• none

Upgrade Notes

• Downtime required: Yes (service restart required)
• Estimated downtime: Up to 15 minutes when upgrading from 14.2.X
• Backup recommendation: Full configuration and data backup before upgrade
• Rollback supported: No

Compatibility & Configuration Notes

• No changes to default configuration values.
• Fully compatible with existing LDAP and Active Directory integrations.
• No changes to supported browsers for WebClient.

Supported systems

• Windows Server (2016 or newer) and Linux (RHEL 8/9, Rocky Linux 8/9, CentOS Stream 9)
• Outlook Sync (14.1 or newer)
• IceWarp Desktop Client (10.0 or newer)
• IceWarp FileSync (14.1 or newer)
• IceWarp mobile app (5.0 or newer) and Authenticator (1.1 or newer)

Support & Feedback

If you experience any issues after upgrading, contact IceWarp Support and reference IceWarp Server 14.3.0.11. Please include the server version, operating system, database type and version and relevant logs when opening a support case.