https://community.checkpoint.com/t5/Firewall-and-Security-Management/microsoft-teams-conferences-disconnects-first-packet-isn-t-SYN/m-p/119662#M16931 <P>Possible you have an asymmetric routing issue.<BR />That's one potential cause for this issue.</P> Fri, 28 May 2021 07:34:07 GMT PhoneBoy 2021-05-28T07:34:07Z https://community.checkpoint.com/t5/Firewall-and-Security-Management/microsoft-teams-conferences-disconnects-first-packet-isn-t-SYN/m-p/119637#M16927 <P>Hello Check Point Community.</P><P>We are facing an issue with Microsoft Teams conferences being randomly disconnected from random users, taking a look to the logs we see a lot of drops on service https(443) to Microsoft public IPs.</P><P>The reason of the drop is "First Packet Isn't Syn"</P><P>Tried working out with support but they have not yet, found a work around or solution.</P><P>Users perceive the issue having a disconnection from the conferences and sometimes the text messages have a lot of delay.</P><P>Any help is very much appreciated.</P> Thu, 27 May 2021 22:27:00 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/microsoft-teams-conferences-disconnects-first-packet-isn-t-SYN/m-p/119637#M16927 juan_diaz 2021-05-27T22:27:00Z https://community.checkpoint.com/t5/Firewall-and-Security-Management/microsoft-teams-conferences-disconnects-first-packet-isn-t-SYN/m-p/119662#M16931 <P>Possible you have an asymmetric routing issue.<BR />That's one potential cause for this issue.</P> Fri, 28 May 2021 07:34:07 GMT https://community.checkpoint.com/t5/Firewall-and-Security-Management/microsoft-teams-conferences-disconnects-first-packet-isn-t-SYN/m-p/119662#M16931 PhoneBoy 2021-05-28T07:34:07Z