diff --git a/RELEASE.rst b/RELEASE.rst
index 953dc51b67..15e015e84e 100644
--- a/RELEASE.rst
+++ b/RELEASE.rst
@@ -1,6 +1,11 @@
 Release Notes
 =============
 
+Version 0.65.6
+--------------
+
+- fix fallback when no language is selected (#3286)
+
 Version 0.65.5 (Released May 04, 2026)
 --------------
 
diff --git a/frontends/main/src/app-pages/DashboardPage/ContractContent.test.tsx b/frontends/main/src/app-pages/DashboardPage/ContractContent.test.tsx
index bb212cfbbf..a3bdf6cc5f 100644
--- a/frontends/main/src/app-pages/DashboardPage/ContractContent.test.tsx
+++ b/frontends/main/src/app-pages/DashboardPage/ContractContent.test.tsx
@@ -1677,6 +1677,61 @@ describe("ContractContent", () => {
     expect(screen.queryByText("Learning Language:")).not.toBeInTheDocument()
   })
 
+  test("disables CTA for non-enrolled B2B course when no translations and no enrollable runs", async () => {
+    const { orgX, user, mitxOnlineUser } = setupOrgAndUser()
+
+    const course = factories.courses.course()
+    const program = factories.programs.program({
+      courses: [course.id],
+    })
+    const contracts = createTestContracts(orgX.id, 1, [program.id])
+    orgX.contracts = contracts
+    mitxOnlineUser.b2b_organizations[0].contracts = contracts
+
+    const contractRun = factories.courses.courseRun({
+      b2b_contract: contracts[0].id,
+      language: "en",
+      run_tag: undefined,
+      is_enrollable: false,
+      courseware_url: "https://openedx.example.com/unenrollable-run",
+    })
+
+    const courseWithoutTranslations = {
+      ...course,
+      courseruns: [contractRun],
+      language_options: [],
+      next_run_id: contractRun.id,
+      next_run: null,
+    }
+
+    setupOrgDashboardMocks(
+      orgX,
+      user,
+      mitxOnlineUser,
+      [program],
+      [courseWithoutTranslations],
+      contracts,
+    )
+
+    setMockResponse.get(urls.enrollment.enrollmentsListV3(), [])
+
+    renderWithProviders(
+      <ContractContent
+        orgSlug={orgX.slug}
+        contractSlug={orgX.contracts[0].slug}
+      />,
+    )
+
+    const programElement = await screen.findByTestId("org-program-root")
+    const card = await within(programElement).findByTestId(
+      "enrollment-card-desktop",
+    )
+
+    const coursewareButton = within(card).getByTestId("courseware-button")
+    expect(coursewareButton).toHaveTextContent("Start Module")
+    expect(coursewareButton).toBeDisabled()
+  })
+
   test("displays correct run URL when user is enrolled in one of multiple runs", async () => {
     const { orgX, user, mitxOnlineUser } = setupOrgAndUser()
 
diff --git a/frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/languageOptions.test.ts b/frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/languageOptions.test.ts
index 8b6cb42201..da6805fd6f 100644
--- a/frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/languageOptions.test.ts
+++ b/frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/languageOptions.test.ts
@@ -392,6 +392,42 @@ describe("languageOptions", () => {
     expect(selectedEnrollment?.run.courseware_id).toBe(spanishRun.courseware_id)
   })
 
+  test("matches enrollment when course has no language options", () => {
+    const run = factories.courses.courseRun({
+      id: 7001,
+      title: "Enrolled Course",
+      courseware_id: "cw-enrolled-7001",
+      courseware_url: "https://example.com/cw-enrolled-7001",
+      is_enrollable: true,
+    })
+
+    const course = factories.courses.course({
+      courseruns: [run],
+      next_run_id: run.id,
+      language_options: [],
+    })
+
+    const selectedRun = getCourseRunForSelectedLanguage(course, "")
+    const enrollment = factories.enrollment.courseEnrollment({
+      run: {
+        id: run.id,
+        course: { id: course.id, title: course.title },
+        title: run.title,
+        courseware_id: run.courseware_id,
+        courseware_url: run.courseware_url,
+      },
+    })
+
+    const selectedEnrollment = getEnrollmentForSelectedLanguage(
+      [enrollment],
+      null,
+      selectedRun,
+    )
+
+    expect(selectedRun?.id).toBe(run.id)
+    expect(selectedEnrollment?.run.id).toBe(run.id)
+  })
+
   test("adapts V3 enrollment run into V2-shaped run context", () => {
     const templateRun = factories.courses.courseRun({
       id: 500,
diff --git a/frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/languageOptions.ts b/frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/languageOptions.ts
index b5f2670640..f9b72c3091 100644
--- a/frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/languageOptions.ts
+++ b/frontends/main/src/app-pages/DashboardPage/CoursewareDisplay/languageOptions.ts
@@ -235,7 +235,11 @@ const getCourseRunForSelectedLanguage = (
 ): CourseRunV2 | null => {
   const languageOption = getSelectedLanguageOption(course, selectedLanguageKey)
   if (!languageOption) {
-    return null
+    return (
+      getBestRun(course, { enrollableOnly: true }) ??
+      course.courseruns[0] ??
+      null
+    )
   }
 
   const matchingRuns = getRunsForLanguageOption(course, languageOption)
@@ -267,7 +271,22 @@ const getEnrollmentForSelectedLanguage = (
   selectedRun: CourseRunV2 | null,
 ): CourseRunEnrollmentV3 | null => {
   if (!selectedLanguageOption) {
-    return null
+    if (!selectedRun) {
+      return null
+    }
+
+    return (
+      enrollments.find((enrollment) => {
+        if (!enrollment.run) {
+          return false
+        }
+
+        return (
+          enrollment.run.id === selectedRun.id ||
+          enrollment.run.courseware_id === selectedRun.courseware_id
+        )
+      }) ?? null
+    )
   }
 
   return (
diff --git a/main/settings.py b/main/settings.py
index ab1b8878e5..00ec603259 100644
--- a/main/settings.py
+++ b/main/settings.py
@@ -35,7 +35,7 @@
 from main.settings_pluggy import *  # noqa: F403
 from openapi.settings_spectacular import open_spectacular_settings
 
-VERSION = "0.65.5"
+VERSION = "0.65.6"
 
 log = logging.getLogger()