Senstar Security Advisory
Date: January 28th, 2025
We want to inform you of an issue impacting some of our users following the release of Microsoft Security Update for Windows 11. This update introduced a change to the value of a private Microsoft COM Windows user message parameter.
Issue Overview
We are investigating an issue where the Symphony Client video panels are restarting roughly every 180 seconds.
This issue is affecting some Symphony 8.x systems running on Windows 11 with Microsoft’s January 14th, 2025 security update applied (Windows 11 OS builds 22621.4751, 22631.4751, 26100.2894).
Affected Versions
Senstar Symphony Client 8.x.
Resolution Plan
We are actively working to address this issue. A fix will be implemented in the upcoming Senstar Symphony Version 8.9, which is scheduled for release soon. Additionally, updates for Versions 8.8 and 8.7 will also be provided to resolve this issue.
If you are running Senstar Symphony 8.6.x please contact your regional sales contact to upgrade to a later version.
Temporary Workaround
As a temporary solution, we have two possible work arounds available:
Option 1: disable OPX. After disabling OPX, Symphony will run all the video panels within the ae.exe client process. Disabling OPX will increase the risk of client crashes and should be re-enabled once the patch is installed.
Please see instructions here: KB 10455
Option 2: using the new Video Display Engine instead of the default player. This will allow you to continue using the client without experiencing disruptions until the fix is released.
Please see instructions here: KB 10591
We apologize for any inconvenience caused and appreciate your patience and understanding as we work to address this issue. If you have any questions or require assistance with implementing the workaround, please don’t hesitate to contact our support team.
We sincerely apologize for any inconvenience this issue may have caused. Ensuring the stability and reliability of our products is our top priority. If you have any questions or need immediate assistance, please contact our support team.
Thank you for your patience and understanding.
The Senstar Team