diff --git a/src/Umbraco.Web.UI.Client/src/shared/auth/auth.context.ts b/src/Umbraco.Web.UI.Client/src/shared/auth/auth.context.ts
index f6ffa51e6d..b9c00be403 100644
--- a/src/Umbraco.Web.UI.Client/src/shared/auth/auth.context.ts
+++ b/src/Umbraco.Web.UI.Client/src/shared/auth/auth.context.ts
@@ -11,6 +11,7 @@ export class UmbAuthContext implements IUmbAuth {
 	#currentUser = new UmbObjectState<UmbLoggedInUser | undefined>(undefined);
 	readonly currentUser = this.#currentUser.asObservable();
 	readonly isLoggedIn = new ReplaySubject<boolean>(1);
+	readonly languageIsoCode = this.#currentUser.asObservablePart((user) => user?.languageIsoCode ?? 'en-us');
 
 	#host;
 	#authFlow;
@@ -33,8 +34,6 @@ export class UmbAuthContext implements IUmbAuth {
 	async fetchCurrentUser(): Promise<UmbLoggedInUser | undefined> {
 		const { data } = await tryExecuteAndNotify(this.#host, UserResource.getUserCurrent());
 
-		if (!data) return;
-
 		this.#currentUser.next(data);
 
 		return data;
diff --git a/src/Umbraco.Web.UI.Client/src/shared/auth/auth.interface.ts b/src/Umbraco.Web.UI.Client/src/shared/auth/auth.interface.ts
index 284388fe41..b70031f8d7 100644
--- a/src/Umbraco.Web.UI.Client/src/shared/auth/auth.interface.ts
+++ b/src/Umbraco.Web.UI.Client/src/shared/auth/auth.interface.ts
@@ -23,6 +23,11 @@ export interface IUmbAuth {
 	 */
 	get currentUser(): Observable<UmbLoggedInUser | undefined>;
 
+	/**
+	 * Get the current user's language ISO code.
+	 */
+	languageIsoCode: Observable<string>;
+
 	/**
 	 * Make a server request for the current user and save the state
 	 */