Omnissa Horizon Client for Windows Release Notes
Horizon Client for Windows 2603 | 14 APR 2026
With Horizon® Client™ for Windows 2603, you can access remote desktops and published applications from your Windows computer with the best possible user experience on the Local Area Network (LAN) or across a Wide Area Network (WAN).
What’s New
Horizon® Client™ for Windows 2603 is released in conjunction with Horizon 8 2603.
Before You Begin
- For the Windows operating systems that this release of Horizon Client for Windows supports, see the Horizon Client for Windows Guide.
- Horizon Client for Windows is supported with the latest maintenance release of the following deployment types:
- Omnissa Horizon 8 version 2006 and later
- Omnissa Horizon Cloud Service - Next-Gen
- Horizon Cloud in Microsoft Azure
- To use Horizon Client in FIPS mode, you must use Connection Server version 2309 or later; if using Unified Access Gateway, you must also use Unified Access Gateway 2309 or later. For more information, see Omnissa Knowledge Base (KB) article 95144.
- To install Horizon Client for Windows, download the installer from the Horizon Clients download page.
- For installation instructions, see the Horizon Client for Windows Guide.
- For information about the features that are supported in nested mode, see Omnissa Knowledge Base article 80509, “Horizon Guidelines for Nested Mode.”
Resolved Issues
The following issues are resolved in this release.
- AST-7637: Client is slow during Microsoft Teams screen sharing
- AST-9024: URL redirection not working in client 2503 and later
- AST-11503: Users unable to launch Horizon VDIs after upgrading Horizon client to version 2512
- AST-14437: URL redirection issue after upgrade to Horizon Client 2506.2
- VCART-7979: SDR Redirection Fails with ‘Unsupported in this session’ Error in one of the clients on RDSH
- VCART-10202: Client crashes during video conference with high number of participants
- VCART-10316: Client crashes when using multiple RDSH apps and/or overlays
- VCART-11024: Blast connection fails when RSA-PSS is configured on client
Known Issues
- Jumplist, URI, and Shortcuts may not work for Horizon Client Next.
Workaround: Rename horizon-client-next to horizon-client. You can also rename the existing horizon-client binary to any name of your choice to avoid conflicts.
Documentation
Horizon Client for Windows documentation is in the Omnissa Product Documentation.
Localized Content for Omnissa Docs
For details on Omnissa’s localization strategy, see Announcing Omnissa Localization Support.
Support Contact Information
To receive support and to learn more about support policies, see Omnissa Customer Connect.
For information on filing a support request in Customer Connect and via Cloud Services Portal, see Omnissa Knowledge Base article 6000005.
