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What other settings should I check if Session Host servers contact domain control server?

Colin Dexter 1 Reputation point
2024-01-28T15:55:48.75+00:00

We have two dedicated machines (hosted) joined to a domain, running Server 2019 Standard, serving as Session Hosts. Licensing is per user. Machine 1 has RD Licensing, RD Connection Broker, RD Gateway, RD Web Access, Remote Apps Machine 2 has the same, minus RD Licensing. It uses Machine 1 for licenses. Both machines use an alternate port for RD connections. 3389 is set to private. machinename.domain.net SSL certificates are installed/binded to port 443 on each. The Domain Controller (DC) is a virtual machine running Server 2016 Datacenter at a different hosting company. (Second DC is in the process of being set up) DC has both session host's IPs scoped in its LDAP TCP-In and UDP-In rules. Both session hosts have the DC's IP set as the Primary DNS server in TCP/IPv4 setting. The session hosts run several apps built in MS Access. These are published Remote Apps. My customers connect with their Remote App .rdp connection shortcuts. Until mid January, this was all working great. The last few weeks we've seen sporadic RD connection issues. Currently can't RD connect through the domain nor as local admins. Customers can't connect with remote app .rdp shortcuts. Local: "Can't connect to the remote computer." Error code 0x3; Extended error code 0x7. The events log in server manager has multiple 1306 and 1296 errors. 1306 - "Remote Desktop Connection Broker failed to redirect the user xxx\xxxxx" 1296 - "Remote Desktop Connection Broker Client failed while getting redirection packet from Connection Broker. User xxxx\xxxxx Error: Remote Desktop Connection Broker is not ready for RPC communication." Domain: "There was a problem connecting to the remote resource." Error code 0x30000008; Extended error code 0x0. Neither session host can ping the domain controller when using the FQDN. Please help!

Windows for business Windows Client for IT Pros Directory services Active Directory
Windows for business Windows Client for IT Pros User experience Remote desktop services and terminal services
Windows for business Windows Server User experience Other

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  1. Anonymous
    2024-01-29T08:07:58.4566667+00:00

    Hi, I noticed you have 2 brokers in your RDS deployment. Could you confirm whether you are using high availability (Connection Broker HA), if you want to use 2 CBs, you have to use HA or it won't work.

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