Question #
When I want to register my Database Server to USB Key Server, error message “TCP channel protocol violation: expecting preamble” is shown?
Server Port: 19500 or 9560
Version: 1.8 / 1.9 / 2.0
Reason #
You are using the same port numbers for USB Key Server and AutoCount Schedule Backup Server. For USB Key server, the port number should be 9560, while port number for AutoCount Schedule Backup Server should be 19500.
Solution #
Make sure both port number for USB Key Server and AutoCount Schedule Backup Server is entered correctly.
Step 1: Navigate to your Notification area and double click on the AutoCount Backup Server Monitor icon.
Step 2: Click on Register this Database Server to USB Key and check whether the port no is 9560. Check the Server Port as well at top left of the AutoCount Backup Server Setting. Make sure the Server Port is 19500.
Credits: Autocount Accounting
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