diff --git a/src/components/course/CourseContextProvider.jsx b/src/components/course/CourseContextProvider.jsx
index ee7bddffb5..bb65a4c485 100644
--- a/src/components/course/CourseContextProvider.jsx
+++ b/src/components/course/CourseContextProvider.jsx
@@ -1,4 +1,4 @@
-import React, { createContext, useMemo } from 'react';
+import React, { createContext, useState, useMemo } from 'react';
 import PropTypes from 'prop-types';
 import {
   COUPON_CODE_SUBSIDY_TYPE,
@@ -25,6 +25,8 @@ export const CourseContextProvider = ({
   currency,
   canOnlyViewHighlightSets,
 }) => {
+  const [externalCourseFormSubmissionError, setExternalCourseFormSubmissionError] = useState(null);
+
   const value = useMemo(() => ({
     state: courseState,
     userCanRequestSubsidyForCourse,
@@ -37,6 +39,8 @@ export const CourseContextProvider = ({
     coursePrice,
     currency,
     canOnlyViewHighlightSets,
+    externalCourseFormSubmissionError,
+    setExternalCourseFormSubmissionError,
   }), [
     courseState,
     userCanRequestSubsidyForCourse,
@@ -49,6 +53,7 @@ export const CourseContextProvider = ({
     coursePrice,
     currency,
     canOnlyViewHighlightSets,
+    externalCourseFormSubmissionError,
   ]);
 
   return (
diff --git a/src/components/course/routes/ExternalCourseEnrollment.jsx b/src/components/course/routes/ExternalCourseEnrollment.jsx
index c0918d59d8..00d2739ad2 100644
--- a/src/components/course/routes/ExternalCourseEnrollment.jsx
+++ b/src/components/course/routes/ExternalCourseEnrollment.jsx
@@ -1,9 +1,13 @@
-import React, { useContext, useEffect } from 'react';
+import React, { useContext, useEffect, useRef } from 'react';
 import { useHistory } from 'react-router-dom';
 import {
-  Container, Col, Row,
+  Alert, Button, Container, Col, Hyperlink, Row,
 } from '@edx/paragon';
+import { CheckCircle } from '@edx/paragon/icons';
 
+import { getConfig } from '@edx/frontend-platform/config';
+import { AppContext } from '@edx/frontend-platform/react';
+import { isDuplicateExternalCourseOrder } from '../../executive-education-2u/data';
 import { CourseContext } from '../CourseContextProvider';
 import CourseSummaryCard from '../../executive-education-2u/components/CourseSummaryCard';
 import RegistrationSummaryCard from '../../executive-education-2u/components/RegistrationSummaryCard';
@@ -12,6 +16,7 @@ import { useExternalEnrollmentFailureReason, useMinimalCourseMetadata } from '..
 import ErrorPageContent from '../../executive-education-2u/components/ErrorPageContent';
 
 const ExternalCourseEnrollment = () => {
+  const config = getConfig();
   const history = useHistory();
   const {
     state: {
@@ -20,13 +25,38 @@ const ExternalCourseEnrollment = () => {
     },
     userSubsidyApplicableToCourse,
     hasSuccessfulRedemption,
+    externalCourseFormSubmissionError,
   } = useContext(CourseContext);
+  const {
+    enterpriseConfig: { authOrgId },
+  } = useContext(AppContext);
+
   const courseMetadata = useMinimalCourseMetadata();
 
+  const externalDashboardQueryParams = new URLSearchParams();
+  if (authOrgId) {
+    externalDashboardQueryParams.set('org_id', authOrgId);
+  }
+
+  let externalDashboardUrl = config.GETSMARTER_LEARNER_DASHBOARD_URL;
+
+  if (externalDashboardQueryParams.has('org_id')) {
+    externalDashboardUrl += `?${externalDashboardQueryParams.toString()}`;
+  }
+
   const {
     failureReason,
     failureMessage,
   } = useExternalEnrollmentFailureReason();
+
+  const containerRef = useRef(null);
+
+  useEffect(() => {
+    if (isDuplicateExternalCourseOrder(externalCourseFormSubmissionError) && containerRef?.current) {
+      containerRef.current.scrollIntoView({ behavior: 'smooth' });
+    }
+  }, [externalCourseFormSubmissionError, containerRef]);
+
   const handleCheckoutSuccess = () => {
     history.push('enroll/complete');
   };
@@ -52,15 +82,33 @@ const ExternalCourseEnrollment = () => {
               <h2 className="mb-3">
                 Your registration(s)
               </h2>
-              <p className="small bg-light-500 p-3 rounded-lg">
-                <strong>
-                  This is where you finalize your registration for an edX executive
-                  education course through GetSmarter.
-                </strong>
-                &nbsp; Please ensure that the course details below are correct and confirm using Learner
-                Credit with a &quot;Confirm registration&quot; button.
-                Your Learner Credit funds will be redeemed at this point.
-              </p>
+              <Alert
+                variant="success"
+                ref={containerRef}
+                icon={CheckCircle}
+                show={isDuplicateExternalCourseOrder(externalCourseFormSubmissionError)}
+                actions={[
+                  <Button as={Hyperlink} target="_blank" destination={externalDashboardUrl}>
+                    Go to dashboard
+                  </Button>,
+                ]}
+              >
+                <Alert.Heading>Already Enrolled</Alert.Heading>
+                <p>
+                  You&apos;re already enrolled. Go to your GetSmarter dashboard to keep learning.
+                </p>
+              </Alert>
+              {!isDuplicateExternalCourseOrder(externalCourseFormSubmissionError) && (
+                <p className="small bg-light-500 p-3 rounded-lg">
+                  <strong>
+                    This is where you finalize your registration for an edX executive
+                    education course through GetSmarter.
+                  </strong>
+                  &nbsp; Please ensure that the course details below are correct and confirm using Learner
+                  Credit with a &quot;Confirm registration&quot; button.
+                  Your Learner Credit funds will be redeemed at this point.
+                </p>
+              )}
               <CourseSummaryCard courseMetadata={courseMetadata} />
               <RegistrationSummaryCard priceDetails={courseMetadata.priceDetails} />
               <UserEnrollmentForm
diff --git a/src/components/course/routes/tests/ExternalCourseEnrollment.test.jsx b/src/components/course/routes/tests/ExternalCourseEnrollment.test.jsx
index ed32704001..15ce650c4e 100644
--- a/src/components/course/routes/tests/ExternalCourseEnrollment.test.jsx
+++ b/src/components/course/routes/tests/ExternalCourseEnrollment.test.jsx
@@ -39,6 +39,13 @@ jest.mock('../../../executive-education-2u/UserEnrollmentForm', () => jest.fn(()
   <div data-testid="user-enrollment-form" />
 )));
 
+jest.mock('@edx/frontend-platform/config', () => ({
+  ...jest.requireActual('@edx/frontend-platform/config'),
+  getConfig: jest.fn(() => ({
+    GETSMARTER_LEARNER_DASHBOARD_URL: 'https://getsmarter.example.com/account',
+  })),
+}));
+
 const baseCourseContextValue = {
   state: {
     courseEntitlementProductSku: 'test-sku',
@@ -59,6 +66,7 @@ const baseAppContextValue = {
     uuid: 'test-uuid',
     enableDataSharingConsent: true,
     adminUsers: ['edx@example.com'],
+    authOrgId: 'test-uuid',
   },
   authenticatedUser: { id: 3 },
 };
@@ -80,7 +88,9 @@ describe('ExternalCourseEnrollment', () => {
   beforeEach(() => {
     jest.clearAllMocks();
   });
-
+  afterEach(() => {
+    jest.clearAllMocks();
+  });
   it('renders and handles checkout success', () => {
     renderWithRouter(<ExternalCourseEnrollmentWrapper />);
     expect(screen.getByText('Your registration(s)')).toBeInTheDocument();
@@ -153,4 +163,32 @@ describe('ExternalCourseEnrollment', () => {
 
     expect(mockHistoryPush).toHaveBeenCalledTimes(1);
   });
+
+  it.each([
+    { hasDuplicateOrder: true },
+    { hasDuplicateOrder: false },
+  ])('shows duplicate order alert (%s)', async ({ hasDuplicateOrder }) => {
+    const mockScrollIntoView = jest.fn();
+    global.HTMLElement.prototype.scrollIntoView = mockScrollIntoView;
+
+    const courseContextValue = {
+      ...baseCourseContextValue,
+      externalCourseFormSubmissionError: hasDuplicateOrder ? { message: 'duplicate order' } : undefined,
+    };
+    renderWithRouter(<ExternalCourseEnrollmentWrapper courseContextValue={courseContextValue} />);
+    if (hasDuplicateOrder) {
+      expect(screen.getByText('Already Enrolled')).toBeInTheDocument();
+      const dashboardButton = screen.getByText('Go to dashboard');
+      expect(dashboardButton).toBeInTheDocument();
+      expect(dashboardButton).toHaveAttribute('href', 'https://getsmarter.example.com/account?org_id=test-uuid');
+      expect(mockScrollIntoView).toHaveBeenCalledTimes(1);
+      expect(mockScrollIntoView).toHaveBeenCalledWith(
+        expect.objectContaining({ behavior: 'smooth' }),
+      );
+    } else {
+      expect(screen.queryByText('Already Enrolled')).not.toBeInTheDocument();
+      expect(screen.queryByText('Go to dashboard')).not.toBeInTheDocument();
+      expect(mockScrollIntoView).toHaveBeenCalledTimes(0);
+    }
+  });
 });
diff --git a/src/components/executive-education-2u/UserEnrollmentForm.jsx b/src/components/executive-education-2u/UserEnrollmentForm.jsx
index 33910b52e1..78d7b21dbd 100644
--- a/src/components/executive-education-2u/UserEnrollmentForm.jsx
+++ b/src/components/executive-education-2u/UserEnrollmentForm.jsx
@@ -17,7 +17,7 @@ import { sendEnterpriseTrackEvent, sendEnterpriseTrackEventWithDelay } from '@ed
 import moment from 'moment/moment';
 import reactStringReplace from 'react-string-replace';
 
-import { checkoutExecutiveEducation2U, toISOStringWithoutMilliseconds } from './data';
+import { checkoutExecutiveEducation2U, isDuplicateExternalCourseOrder, toISOStringWithoutMilliseconds } from './data';
 import { useStatefulEnroll } from '../stateful-enroll/data';
 import { LEARNER_CREDIT_SUBSIDY_TYPE } from '../course/data/constants';
 import { CourseContext } from '../course/CourseContextProvider';
@@ -50,10 +50,11 @@ const UserEnrollmentForm = ({
     state: {
       userEnrollments,
     },
+    externalCourseFormSubmissionError,
+    setExternalCourseFormSubmissionError,
   } = useContext(CourseContext);
 
   const [isFormSubmitted, setIsFormSubmitted] = useState(false);
-  const [formSubmissionError, setFormSubmissionError] = useState();
   const [enrollButtonState, setEnrollButtonState] = useState('default');
 
   const handleFormSubmissionSuccess = async (newTransaction) => {
@@ -74,7 +75,7 @@ const UserEnrollmentForm = ({
     subsidyAccessPolicy: userSubsidyApplicableToCourse,
     onSuccess: handleFormSubmissionSuccess,
     onError: (error) => {
-      setFormSubmissionError(error);
+      setExternalCourseFormSubmissionError(error);
       setEnrollButtonState('error');
       logError(error);
     },
@@ -131,7 +132,7 @@ const UserEnrollmentForm = ({
     try {
       await redeem({ metadata: userDetails });
     } catch (error) {
-      setFormSubmissionError(error);
+      setExternalCourseFormSubmissionError(error);
       logError(error);
     }
   };
@@ -155,7 +156,7 @@ const UserEnrollmentForm = ({
         logInfo(`${enterpriseId} user ${userId} has already purchased course ${productSKU}.`);
         await handleFormSubmissionSuccess();
       } else {
-        setFormSubmissionError(error);
+        setExternalCourseFormSubmissionError(error);
         logError(error);
       }
     }
@@ -201,15 +202,17 @@ const UserEnrollmentForm = ({
                 <Alert
                   variant="danger"
                   className="mb-4.5"
-                  show={!!formSubmissionError}
-                  onClose={() => setFormSubmissionError(undefined)}
+                  show={
+                    externalCourseFormSubmissionError
+                    && !isDuplicateExternalCourseOrder(externalCourseFormSubmissionError)
+                  }
+                  onClose={() => setExternalCourseFormSubmissionError(undefined)}
                   dismissible
                 >
                   <p>
                     An error occurred while sharing your course enrollment information. Please try again.
                   </p>
                 </Alert>
-
                 <Row className="mb-4">
                   <Col xs={12} lg={6}>
                     <Form.Group
@@ -367,9 +370,16 @@ const UserEnrollmentForm = ({
                 default: 'Confirm registration',
                 pending: 'Confirming registration...',
                 complete: 'Registration confirmed',
-                error: 'Try again',
+                error: externalCourseFormSubmissionError
+                  && isDuplicateExternalCourseOrder(externalCourseFormSubmissionError)
+                  ? 'Confirm registration'
+                  : 'Try again',
               }}
               state={enrollButtonState}
+              disabled={
+                externalCourseFormSubmissionError
+                && isDuplicateExternalCourseOrder(externalCourseFormSubmissionError)
+              }
             />
           </div>
         </FormikForm>
diff --git a/src/components/executive-education-2u/UserEnrollmentForm.test.jsx b/src/components/executive-education-2u/UserEnrollmentForm.test.jsx
index f6babc1205..a8072c34dc 100644
--- a/src/components/executive-education-2u/UserEnrollmentForm.test.jsx
+++ b/src/components/executive-education-2u/UserEnrollmentForm.test.jsx
@@ -78,6 +78,8 @@ const UserEnrollmentFormWrapper = ({
     state: {
       userEnrollments: [],
     },
+    setExternalFormSubmissionError: jest.fn(),
+    formSubmissionError: {},
   },
 }) => (
   <IntlProvider locale="en">
@@ -314,7 +316,17 @@ describe('UserEnrollmentForm', () => {
   it('handles network error with form submission', async () => {
     const mockError = new Error('oh noes');
     Date.now = jest.fn(() => new Date().valueOf());
-    render(<UserEnrollmentFormWrapper />);
+    const mockFormSubmissionValue = { message: 'oh noes' };
+
+    render(<UserEnrollmentFormWrapper
+      courseContextValue={{
+        state: {
+          userEnrollments: [],
+        },
+        setExternalCourseFormSubmissionError: jest.fn(),
+        externalCourseFormSubmissionError: mockFormSubmissionValue,
+      }}
+    />);
     userEvent.type(screen.getByLabelText('First name *'), mockFirstName);
     userEvent.type(screen.getByLabelText('Last name *'), mockLastName);
     userEvent.type(screen.getByLabelText('Date of birth *'), mockDateOfBirth);
@@ -340,9 +352,11 @@ describe('UserEnrollmentForm', () => {
     expect(mockLogError).toHaveBeenCalledTimes(1);
     expect(mockLogError).toHaveBeenCalledWith(mockError);
 
-    // ensure error alert is visible
-    expect(screen.getByRole('alert')).toBeInTheDocument();
-    expect(screen.getByText('An error occurred while sharing your course enrollment information', { exact: false })).toBeInTheDocument();
+    await waitFor(() => {
+      // ensure error alert is visible
+      expect(screen.getByRole('alert')).toBeInTheDocument();
+      expect(screen.getByText('An error occurred while sharing your course enrollment information', { exact: false })).toBeInTheDocument();
+    });
   });
 
   it('handle error 422 where course was already enrolled in with legacy enterprise offers', async () => {
@@ -397,4 +411,38 @@ describe('UserEnrollmentForm', () => {
     // disabled after submitting
     expect(screen.getByText('Registration confirmed').closest('button')).toHaveAttribute('aria-disabled', 'true');
   });
+
+  it('handles duplicate order with form submission', async () => {
+    const mockError = new Error('duplicate order');
+    Date.now = jest.fn(() => new Date().valueOf());
+    const mockFormSubmissionValue = { message: 'duplicate order' };
+    render(<UserEnrollmentFormWrapper
+      courseContextValue={{
+        state: {
+          userEnrollments: [],
+        },
+        setExternalCourseFormSubmissionError: jest.fn(),
+        externalCourseFormSubmissionError: mockFormSubmissionValue,
+      }}
+    />);
+    userEvent.type(screen.getByLabelText('First name *'), mockFirstName);
+    userEvent.type(screen.getByLabelText('Last name *'), mockLastName);
+    userEvent.type(screen.getByLabelText('Date of birth *'), mockDateOfBirth);
+    userEvent.click(screen.getByLabelText(termsLabelText));
+    userEvent.click(screen.getByLabelText(dataSharingConsentLabelText));
+    userEvent.click(screen.getByText('Confirm registration'));
+
+    // simulate `useStatefulEnroll` calling `onError` arg
+    act(() => {
+      useStatefulEnroll.mock.calls[0][0].onError(mockError);
+    });
+
+    expect(mockLogError).toHaveBeenCalledTimes(1);
+    expect(mockLogError).toHaveBeenCalledWith(mockError);
+
+    await waitFor(() => {
+      // ensure regular error alert is not visible
+      expect(screen.queryByText('An error occurred while sharing your course enrollment information')).not.toBeInTheDocument();
+    });
+  });
 });
diff --git a/src/components/executive-education-2u/data/utils.js b/src/components/executive-education-2u/data/utils.js
index 6d68b3cb35..d43fef4359 100644
--- a/src/components/executive-education-2u/data/utils.js
+++ b/src/components/executive-education-2u/data/utils.js
@@ -4,3 +4,5 @@ export const toISOStringWithoutMilliseconds = (isoString) => {
   }
   return `${isoString.split('.')[0]}Z`;
 };
+
+export const isDuplicateExternalCourseOrder = (formSubmissionError) => formSubmissionError?.message?.includes('duplicate order') || false;