KB-1747 'Import Dialog Timed Out' error thrown when importing an application or patch


While importing an application or patch, Appian is busy doing work for some time. After a few minutes, the following HTTP error message is shown:

Title: Import Dialog Timed Out
Reason: HTTP Code: <502 or 504>
Message: Your import is still running in the background. Refresh this page and monitor News for notification that your import has completed.


This HTTP error message appears when the web server times out during an import. The web server may time out when importing large applications or patches. The import will still run in the background when the web server times out.


In order to check for the successful import, follow the steps outlined in KB-1738.

Affected Versions

This article applies to Appian 17.3 and later.

Last Reviewed: October 2018