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Articles

Crashing, Slowness, CPU/RAM spikes, and other Performance issues

  • Kerio Connect Service Crashes and Restarts on Linux

    Overview Kerio Connect service crashes and restarts on its own every minute. The macOS users connected via Exchange (EWS) experience intermittent and slow account performance issues. Prerequisites Ker...

  • HTTP or HTTPs Service Not Autostarting

    Overview Occasionally, customers will report that their HTTP/S service will not auto-start regardless of the setting in the Admin UI. This will cause an interruption in the mail flow as the service ne...

  • Error: 'Service startup failed...' - Kerio Connect

    Overview This article provides a solution to the issue with Kerio Connect startup, where customers report the following error: Service startup failed: Cannot start remote admin server on port 44337. T...

  • Slow Folder Performance issues

    Overview While the Kerio Connect server is facing a High Open Folder count issue (e.g. INBOX, Sent Items), the performance in the admin GUI (search results in Outlook/Webmail, general responsiveness) ...

  • Kerio Connect mailserver is causing unexpected high CPU, RAM leaks or crashes

    Overview Mailserver service may occupy full CPU capacity and increase Memory usage, resulting in Kerio Connect server (mailserver.exe process) crashes, segfaults, high CPU, and RAM load. As an outcome...

  • Kerio Connect Server is not responding, Internet Connection and Communication errors

    Overview When the Kerio Connect server becomes unreachable, the clients can be disconnected with 'the server does not respond. Check your Internet connection' error. As a result, the email system may ...

  • Memory Optimization

    Overview The Kerio Connect uses built-in memory (RAM) management for specific services like instant messaging and Fulltext search. These apps are written in Java and are designed to consume a limited ...