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Nov 25, 2025
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Add documentation for backoffice authentication updates #7658

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Add documentation for backoffice authentication updates
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12 changes: 12 additions & 0 deletions 17/umbraco-cms/fundamentals/setup/upgrading/version-specific/README.md
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Expand Up @@ -174,6 +174,18 @@ The default value of the `UseHttps` configuration in [Global Settings](../../../

If you _need_ to run Umbraco without HTTPS, make sure to update `appsettings.json` accordingly.

**Authentication for the backoffice client**

Following the draft [Request for Comments (RFC) from the Internet Engineering Task Force (IETF)](https://datatracker.ietf.org/doc/html/draft-ietf-oauth-browser-based-apps), the backoffice client authentication has been changed to tighten security.

This change affects _only_ the backoffice client authentication against the Management API. API user authentication against the Management API remains unaffected, as does the Delivery API.

This change _might_ affect custom backoffice extensions that interact with the Management API. All fetch requests to the Management API must include credentials by declaring `credentials: 'include'`.

By default, backoffice extensions built using the HQ package starter template are not affected.

For more details on this update, see the following PRs: [#20779](https://github.com/umbraco/Umbraco-CMS/pull/20779) and [#20820](https://github.com/umbraco/Umbraco-CMS/pull/20820).

**Updated dependencies**

As is usual for a major upgrade, Umbraco’s dependencies have been updated to their latest compatible versions.
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