Overview

You may experience issues with several Outlook clients not working properly due to the Kerio Offline Connector (KOFF) service stopping. The Outlook client may display an error message stating "The RPC server is not available" when trying to send a message. Additionally, the system may record an error that the file name or extension is too long due to a deleted mailbox being inside another mailbox, causing the file path to exceed the maximum character limit of 256 characters.

Solution

1. Restart the KOFF service: Ensure the KOFF service is running. If it has stopped, try restarting it.
2. Check Network Connection: The "RPC server is unavailable" error can occur due to network connection issues. Ensure that the machine is properly connected to the network and can reach the Kerio Connect server.
3. Reinstall KOFF: If the problem persists, you might want to consider reinstalling KOFF. Make a backup of any necessary files before starting the uninstallation and reinstallation process.
4. Update KOFF and Server: Ensure that both your KOFF and Kerio Connect server are updated to the latest versions.
5. Configure the folder structure: The system is recording an error because the file name or extension is too long. This is because a deleted mailbox is inside another mailbox, making the file path longer than expected. To resolve this, configure the folder structure so that the file path does not exceed 256 characters.

Summary

This article provides solutions for issues related to the KOFF service stopping and file path length exceeding the maximum limit in Outlook clients. By following the steps provided, users can resolve these issues and ensure the smooth functioning of their Outlook clients.

FAQ

1. What is the KOFF service?
   KOFF stands for Kerio Offline Connector. It is a service that allows Outlook clients to function properly by maintaining a connection with the Kerio Connect server.
2. What does the "RPC server unavailable" error mean?
   This error typically indicates that the machine is unable to reach the Kerio Connect server, often due to network connection issues.
3. Why does the file path length matter?
   The file path length matters because there is a maximum character limit (256 characters) that a file path can have. If this limit is exceeded, it can cause errors and disrupt the functioning of the Outlook client.