You have successfully implemented CRM servers and expect your Sandbox service to execute plugins in Isolation mode; however, they fail with an error:
ERROR: The plug-in execution failed because no Sandbox Hosts are currently available. Please check that you have a Sandbox server configured and that it is running. System.ServiceModel.EndpointNotFoundException: Microsoft Dynamics CRM has experienced an error. Reference number for administrators or support: #357E9BEE
If the issue is not still not resolved please open a support case with Microsoft for additional support.
Microsoft Premier Field Engineer
We are experiencing this error for online.
Can you please throw some light for the error
"The plug-in execution failed because no Sandbox Hosts are currently available"
to be thrown in crm online environment?
Hi Farina, sorry it's taken a while to get back to your comment. If you're seeing this for online please open a support ticket and ask them to investigate so they can narrow down why this is happening - thanks!
We have asynchronous plugins configured in CRM with 3 servers running on Load Balancer. One of the servers is throwing the below error while processing requests by executing asynchronous plugins (as it does not have full installation).
System.ServiceModel.EndpointNotFoundException: Could not connect to net.tcp://<server>CrmSandboxHost. The connection attempt lasted for a time span of 00:00:01.0156250. TCP error code 10061: No connection could be made because the target machine actively refused it <ip>:808.
All the posts I have seen and the replies from different users is that, to have the firewall port that the Sandbox uses (port 808), open.
I wanted to know against what program (EXE) should TCP connections be opened on port 808.
Or please suggest an alternative solution.