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KB-XXXX 401 Error when attempting to login via Appian Authentication with correct credentials

Symptoms

When attempting to login to a site via Appian Authentication with correct credentials, a 401 error page is show and the user is unable to login:

There are no entries logged in the login-audit.csv file for the attempt and no traffic is logged in the application server access log.

Cause

The browser is not correctly forwarding the login request to the application server for processing.

Action

Clear the web browser cache and attempt to login again.

Affected Versions

This article applies to all versions of Appian.

Last Reviewed: April 2018