# Unregistered redirect_uri

- Link: https://www.agilicus.com/faq/unregistered-redirect_uri/
- Published: 2026-04-01T20:03:36+00:00
- Author: Don Bowman

If you are using a custom authentication client id in your web application, or your
web application participates in the sign in, you may find you see a message “Message:
Unregistered redirect_uri”.

You may find that either:

a) you have selected “my application participates in authentication” and you did
not mean this

b) your application does participate, but, you have not added the proper redirect_uri
to Resources/Applications/Authentication Clients in admin.