SSL Inspection Microsoft Stream: Server did not respond to client hello

Hello Community,

I have a problem with Microsoft Stream if SSL Inspection in enabled. Some streams won't start. If I look into the SSL Log, I see the error message "Server did not respond to client hello" for host streameuwe1su051.azureedge.net. I build exceptions and firewall rules for streameuwe1su051.azureedge.net but nothing helps except complete disable the SSL inspection under "Advanced Settings". If SSL Inspection is disabled, the stream starts. with enabled SSL Inspection I get this error message:

messageid="19017" log_type="SSL" log_component="SSL" log_subtype="Error" severity="Information" user="" src_ip="192.168.183.12" dst_ip="152.199.19.161" user_group="" src_country="R1" dst_country="USA" src_port="62351" dst_port="443" app_name="" app_id="0" category="Information Technology" category_id="29" con_id="2531167360" rule_id="1" profile_id="1" rule_name="Exclusions by website or category" profile_name="Maximum compatibility" bitmask="" key_type="KEY_TYPE__UNKNOWN" key_param="Unknown" fingerprint="" resumed="0" cert_chain_served="TRUE" cipher_suite="" sni="streameuwe1su051.azureedge.net" tls_version="Unknown" reason="Server did not respond to client hello" exception="av,https,validation,policy,zero-day protection" message=""

This problem I had with 18.0.5 and 18.5.1 Firmware. Has anybody a hint for me?

Thanks,

Ben