Thanks for your answer.
As mentioned we have 2 UAGs and 2 Connection Brokers
We also use a HA-Proxy as load balancer for the whole environment and all the external connections are following the same connection path.
We only use the Blast protocol
The timeout settings for the UAG, LB are the same (as far as I can see)
We also monitor the response thrue PRTG and that all is fine.
Just to mention: connecting and logging in from external, is not the problem.
After that the users do see all the desktops / pools that are available for them.
They also can log in to other desktops / pools, but only 1 desktop / pool (see attagement with the yellow marked one) is giving these connection errors. And it is not persistent, sometimes it works, sometimes not. But only with this specific pool. The Horizon client is just showing: loading desktop.
See attachement for the both images
Regards, Pascal
