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KB-1252 Appian Health Check process hangs and does not complete


The Health Check process may appear to be 'hanging' or taking a very long time without completing but does not appear to fail.

The following error can be seen in the application server log:

[Appian Work Item - 16 - ProcessExec01 : UnattendedJavaActivityRequest] ERROR com.appian.integration.httpclient.smartnode.HttpFileUploadSmartNode - ConnectorRuntimeException [title=Error calling HTTP File Upload, com.appian.integration.core.exception.ConnectorRuntimeException: org.apache.http.conn.HttpHostConnectException: Connect to [,] failed: Connection refused] 


Appian Health Check requires a connection to Forum ( For some self-managed customers, there may be restrictions on network traffic preventing the connection to Forum.


Add a network rule to allow connections to on ports 80 and 443.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: March 2017