DRAFT KB-XXXX Navigating to Appian site displays directories instead of homepage when using IIS as a web server

Symptoms

The Appian user interface does not render as expected when accessing the site using IIS as the web server. Instead, end users see the list of directories normally found in <APPIAN_HOME>/ear/suite.ear. This behavior is depicted in the screenshot below:

Cause

The error is caused because of one of the following:

There is an issue with the isapi_redirect.dll version/file.
There is an issue with the IIS configuration.

Action

One or more of the following steps will help to resolve this issue:

Install a different version of the isapi_redirect.dll file in the Redirector/isapi directory.
If you have a 64-bit version of isapi_redirect.dll then follow this step:
- In IIS Manager, select DefaultAppPool. In the Actions list, under Edit Application Pool, select Advanced Settings. In the General group, select Enable 32-Bit Applications and select False, then click OK.
In isapi_redirect.properties file set the 'log_file' path to Redirector\log\isapi_redirect.log rather than <APPIAN_HOME>\Redirector\log\isapi_redirect.log.

Affected Versions

This article applies to all versions of Appian using IIS as the web server.

Last Reviewed: August 2018