SOLVED SCCM IBCM new Deployments do not appear over Internet

[MaGicApr80]

Hello,
we use Microsoft Configuration Manager version 2309 with a primary site and an IBCM server. The servers have the operating system version Windows Server 2019 Datacenter. We use clients in Windows 10 LTSC2021, Windows 10 SAC and Windows 11. At first everything worked wellbut for several months I have been observing the following problem with clients that connect via the IBCM:
Software that the client already knows can be downloaded and installed over the Internet without any problems. Deployments that are published while the client is only connected via the Internet are not visible. The new packages only appear when the PC is connected again via the intranet or VPN. I haven't been able to identify any problems in the log files so far. There are no problems with client communication in the console or on the client. The clients log in correctly to the server and the console also shows that they are connected via the IBCM. The client notification seems to work properly. The issue affects to applications, packages and updates.

I am grateful for every hint.
Best regards.

 

[_Romano_]

Hello,
I am facing the same issue, could you find a solution/cause?

 

[MaGicApr80]

Hello,
I am facing the same issue, could you find a solution/cause?

Hello, yes, in the end I found the cause of the problem in collaboration with Microsoft support. In my case, the network firewall intercepted the certificate and did not forward it from the client to the server.