When a user self-registers on an Experience Cloud site that has multiple languages enabled, the language they selected in the site's language selector is not applied to their new user profile. Instead, the new user account is created using the organization's Default Language, which is configured in Setup > Company Information.
This is expected behavior in the standard self-registration feature — the language selector choice does not carry over to the user's language preference upon account creation.
The Experience Cloud site's standard self-registration feature does not allow setting a language other than the organization's Default Language upon user creation. The language selector on the site affects the display language for the visitor but does not set the user's language preference in the created account.
To change the language setting, the user must log in to the site after their account has been created and follow these steps:
For organizations with development resources, it may be possible to capture the language selected at registration by configuring the Registration Page Type to Configurable Self-Reg Page and developing a custom self-registration handler using Apex (Salesforce's server-side programming language). This approach requires custom development. Contact your Salesforce developer or partner for implementation guidance.
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