Hi @roberto.periale,
DXL client to broker communication would require expertise from DXL to investigate. Since it is posted in EDR, I assume you are using DXL for EDR purposes in which case would suggest the below KBA as a generic measure on troubleshooting connectivity issues:
How to troubleshoot McAfee Endpoint Detection and Response connection issues.
I am also moving this DXL forum to gain help from the DXL experts.
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Thanks and regards,
Adithyan T