GFI Support Home Start a conversation Sign in
Start a conversation
  1. KerioConnect
  2. KerioConnect - Release Notes
  3. Articles

Kerio Connect 10.0.9 Release Notes

Overview

Kerio Connect 10.0.9 (build 9754) has been released and is available for download:

  • Release date: 2026-03-25
  • Build ID: 9754

Changes in this release

  • Resolved agent log locking issue
  • Fixed a regression with default email signatures not saving in Outlook Connector (Remove and Recreate the Profile)
  • Implemented TCP fallback for truncated DNS responses
  • Resolved misleading 2FA cookie token verification error messages
  • Fixed security issue where allowed relay IPs bypass spam filtering
  • Enhanced licensing enforcement during Active Directory synchronization
  • Prevented GFI Agent from auto-enabling after upgrades
  • Improved SMIME certificate handling for encrypted messages
  • Fixed calendar file (.ics) preview encoding in Outlook Connector - (Remove and Recreate the Profile)
  • "All Folders" Search feature fixed in New Connect UI
  • Removed Kerio Connect Nano
  • Enhanced Exchange Web Services (EWS) compatibility for third-party clients, fixing the following:
    • Error 108: "Not implemented only CategoryList configuration is supported" (GetUserConfiguration)
    • Error 339: "Only traversal type Shallow is supported" (FindItem)
    • Error 339: "Unsupported restriction type" (Filtering Operations)
  • Added RFC 8058 compliance by including List-Unsubscribe headers in DKIM signatures for one-click unsubscribe support
Choose files or drag and drop files
Was this article helpful?
Yes
No

  1. Ciprian Nastase

  2. Posted
  3. Updated

Comments

  1. Roman Klíma

    Version 10.0.9: I fixed the fulltext by deleting the fulltext directory and recreating it. Unfortunately, on Android phones where we have an Exchange ActiveSync account, our calendar and contacts are not syncing properly. If I create an entry on the phone, I see it in Windows MS Outlook after a while, but if I see the calendar in Outlook, it does not match what I have on my mobile - the calendar on my mobile does not contain old events that I had in Outlook before upgrading to 10.0.0.9

  2. Helge Schmitz

    What is Kerio Connect Nano ??


  3. Torben Lümkemann

    After upgrading to 10.0.9 my Kerio server crashing all the time. 

  4. Roman Klíma

    After upgrading to 10.0.9 in a Linux environment, the mailbox index is not running. After starting it manually and after cleaning /opt/kerio/mailserver/store/fulltext, it is still waiting for all mailboxes. It pretends that indexing is running, but it is not.

  5. Marc Müller

    Again the same backup problem as in the 10.0.8 release. On macOS, backups are created, but immediately deleted and not saved.