KB-1979 Health Check fails to run with HTTP 404 error or "unable to connect to Forum" error


Health Check Plug-in

The Appian Health Check "AHC Data Analysis" process fails with a HTTP 404 error. The following error is seen in the application server log:

ERROR com.appian.integration.httpclient.smartnode.HttpSmartNode - ConnectorRuntimeException [title=HTTP error connecting to https://forum.appian.com/suite/plugins/servlet/stateless/healthcheck/1.0/downloadreport?request_id=<ID>, com.appian.integration.core.exception.ConnectorRuntimeException: HTTP/1.1 404 404]

Admin Console Health Check

The Health Check report fails to generated in the Admin Console:

The health-check.log also shows:

Run encountered an error during data analysis (APNX-1-4520-207) 
HTTP response error when sending data collection to forum: Service Unavailable


Health Check was unable to connect to Appian Forum to send the Health Check Data Collection and download the Health Check report. This may occur if Appian Forum is undergoing maintenance. Scheduled maintenance for Appian Forum is announced on Appian Community:


Re-run the Health Check outside of the scheduled maintenance window time noted on Appian Community.

Review KB-2162 Appian Forum maintenance schedule for known times of Forum Maintenance. Appian recommends that Health Checks are not scheduled for data analysis around these times.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: June 2021