Increased Memory Usage in Kerio Control 9.6.1

Update timeline

1. investigating Apr 27, 2026, 10:50 AM UTC

   We are investigating an issue in Kerio Control 9.6.1 build 9227 causing increasing memory usage and potential performance degradation. Our Engineering team is actively analyzing the issue and working on a mitigation.

2. investigating Apr 27, 2026, 11:43 PM UTC

   We are still investigating the issue observed in Kerio Control 9.6.1 build 9227, where memory usage may gradually increase over time and potentially impact performance. At this time, our Engineering team continues to analyze the behavior and evaluate possible mitigation options. We do not have a confirmed fix or ETA yet, but the case remains under active review. We will continue investigating and will share any relevant updates as soon as more information becomes available.

3. investigating Apr 28, 2026, 06:54 AM UTC

   The Engineering team continues to analyze the behavior and evaluate possible mitigation options. We do not have a confirmed fix or ETA yet, but the case remains under active review. We will continue investigating and will share any relevant updates as soon as more information becomes available.

4. monitoring Apr 29, 2026, 04:25 AM UTC

   - A fix has been implemented by our Development team and is available for download here - https://drive.google.com/drive/folders/1cOe9UtkliJ4gbkaoWljzrRf3JlwlvTfS - You can apply this fix using steps from the 'Upgrading Kerio Control' Knowledge Base article - https://support.keriocontrol.gfi.com/article/116539-upgrading-kerio-control - We will monitor this.

5. monitoring Apr 30, 2026, 03:21 AM UTC

   No issues have been reported. We are continuing to monitor.

6. monitoring May 01, 2026, 04:02 AM UTC

   We're keeping a close eye on things. No issues related to the increasing memory reported.

7. monitoring May 02, 2026, 05:12 AM UTC

   No new issues reported since the fix has been made available. We will continue to monitor.

8. monitoring May 03, 2026, 04:30 AM UTC

   We have seen no further issues since the fix. If you observe any further issues we encourage you to reach out with logs.

9. monitoring May 03, 2026, 10:45 AM UTC

   Things continue to work as expected after the fix being applied. We are continuing to monitor.