Error "Invalid domain format. Requires e.g. domain.com" when Configuring Public Domain for New Okta Access Gateway Applications
May 4, 2026
Access Gateway
Okta Classic Engine
Okta Identity Engine
Overview
When creating a new Protected Application in Okta Access Gateway, the following error message is presented for the Public Domain field.
Invalid domain format. Requires e.g. domain.com
Applies To
- Okta Access Gateway release 2023.9.1 and below
- Public Domains with Top-Level Domain (TLDs) Longer Than 6 Characters
- Okta Classic Engine
- Okta Identity Engine (OIE)
Cause
The regular expression used in the domain validation would throw an error for a valid domain.
Solution
To resolve the issue, upgrade Okta Access Gateway to version 2023.11.0 or newer.
