Error Message: "Got an error reading communication packets"

[Mar K]

Hello folks,

the MySQL database server on my server is constantly generating errors.
Here is a section out of the error log

=====
170607 8:48:01 [Warning] Aborted connection 13351 to db: 'db' user: 'dbUser' host: 'HostName' (Got an error reading communication packets)
170607 8:48:46 [Warning] Aborted connection 13353 to db: 'db' user: 'dbUser' host: 'HostName' (Got an error reading communication packets)
170607 8:48:46 [Warning] Aborted connection 13352 to db: 'db' user: 'dbUser' host: 'HostName' (Got an error reading communication packets)
170607 8:52:11 [Warning] Aborted connection 13355 to db: 'db' user: 'dbUser' host: 'HostName' (Got an error reading communication packets)
170607 8:56:23 [Warning] Aborted connection 13360 to db: 'db' user: 'dbUser' host: 'HostName' (Got an error reading communication packets)
=====

So I googled for a solution and I ended up in increasing the value of the server variable 'max_allowed_packet'.
I already increased this variable to the maximum value of 1073741824 and restartet the server, but it didn't change anything. The error message gets still written to the log file.

The server is MySQL 5.1.24 and the OS of the server is Windows Server 2008.

Hope you can help me with that, since I have no idea why the message is still logged into the file.

Thanks
Kind Regards
Mar K