fdwl thanks for the clarification, unfortunately this did not resolve the issue.
What I did:
- Added a Service endpoint for Microsoft.Web to the vNet
- Turned off the first Session Host, in order to eliminate the host as error source
The error message was the same, but the error details are different now:
ActivityId 123f1cab-6112-4159-baab-a5da77d70000
ErrorSource : RDStack
ErrorOperation : SendReverseConnectRequestToStack
ErrorCode : -2147001841
ErrorCodeSymbolic : ConnectionFailedReverseConnectStackServerUnreachable
ErrorMessage : Reverse Connect to 'rdgateway-c001-weu-r1.wvd.microsoft.com' failed with error 0x80075A0F 2147965455. Make sure it is reachable from your network. 'Unknown error (0x80075a0f)'
ErrorInternal : False
ReportedBy : RDGateway
Time : 28.10.2019 15:09:32
ErrorSource : RDGateway
ErrorOperation : GatewayConnectionActive
ErrorCode : -2146233083
ErrorCodeSymbolic : ConnectionFailedClientDidNotConnect
ErrorMessage : Client did not start websocket connection
ErrorInternal : False
ReportedBy : RDGateway
Time : 28.10.2019 15:14:52
ErrorSource : RDStack
ErrorOperation : TransportConnecting
ErrorCode : 40
ErrorCodeSymbolic : ReverseConnectTimeout
ErrorMessage : Reverse connect to the gateway has timed out.
ErrorInternal : False
ReportedBy : RDStack
Time : 28.10.2019 15:09:34
I don't see why there should be any connection problems. There is no Firewall in the vNet and the Windows Firewall on the machines is turned off.