diff --git a/lms/envs/common.py b/lms/envs/common.py
index e32e009f2a..27b82867d0 100644
--- a/lms/envs/common.py
+++ b/lms/envs/common.py
@@ -3655,6 +3655,10 @@ ENTERPRISE_SPECIFIC_BRANDED_WELCOME_TEMPLATE = _(
     u'{line_break}Please note that {platform_name} has a different {privacy_policy_link_start}Privacy Policy'
     u'{privacy_policy_link_end} from {enterprise_name}.'
 )
+ENTERPRISE_PROXY_LOGIN_WELCOME_TEMPLATE = _(
+    u'{start_bold}{enterprise_name}{end_bold} has partnered with {start_bold}{platform_name}{end_bold} '
+    u'to offer you high-quality learning opportunities from the world\'s best institutions and universities.'
+)
 ENTERPRISE_TAGLINE = ''
 ENTERPRISE_EXCLUDED_REGISTRATION_FIELDS = {
     'age',
@@ -3915,9 +3919,6 @@ BLOCKSTORE_API_URL = 'http://localhost:18250/api/v1/'
 # in the blockstore-based XBlock runtime
 XBLOCK_RUNTIME_V2_EPHEMERAL_DATA_CACHE = 'default'
 
-########################## LEARNER PORTAL ##############################
-LEARNER_PORTAL_URL_ROOT = 'http://localhost:8734'
-
 ######################### MICROSITE ###############################
 MICROSITE_ROOT_DIR = '/edx/app/edxapp/edx-microsite'
 MICROSITE_CONFIGURATION = {}
diff --git a/lms/envs/devstack.py b/lms/envs/devstack.py
index 88461904d5..7dde2ab955 100644
--- a/lms/envs/devstack.py
+++ b/lms/envs/devstack.py
@@ -251,6 +251,17 @@ CREDENTIALS_PUBLIC_SERVICE_URL = 'http://localhost:18150'
 ############################### BLOCKSTORE #####################################
 BLOCKSTORE_API_URL = "http://edx.devstack.blockstore:18250/api/v1/"
 
+########################## PROGRAMS LEARNER PORTAL ##############################
+LEARNER_PORTAL_URL_ROOT = 'http://localhost:8734'
+
+########################## ENTERPRISE LEARNER PORTAL ##############################
+ENTERPRISE_LEARNER_PORTAL_NETLOC = 'localhost:8734'
+ENTERPRISE_LEARNER_PORTAL_BASE_URL = 'http://' + ENTERPRISE_LEARNER_PORTAL_NETLOC
+
+########################## ENTERPRISE ADMIN PORTAL ##############################
+ENTERPRISE_ADMIN_PORTAL_NETLOC = 'localhost:1991'
+ENTERPRISE_ADMIN_PORTAL_BASE_URL = 'http://' + ENTERPRISE_ADMIN_PORTAL_NETLOC
+
 ###################### Cross-domain requests ######################
 FEATURES['ENABLE_CORS_HEADERS'] = True
 CORS_ALLOW_CREDENTIALS = True
@@ -260,7 +271,11 @@ CORS_ALLOW_HEADERS = corsheaders_default_headers + (
     'use-jwt-cookie',
 )
 
-LOGIN_REDIRECT_WHITELIST = [CMS_BASE]
+LOGIN_REDIRECT_WHITELIST = [
+    CMS_BASE,
+    ENTERPRISE_LEARNER_PORTAL_NETLOC,
+    ENTERPRISE_ADMIN_PORTAL_NETLOC,
+]
 
 ###################### JWTs ######################
 JWT_AUTH.update({
@@ -360,8 +375,6 @@ MKTG_URLS = {
     'WHAT_IS_VERIFIED_CERT': '/verified-certificate',
 }
 
-ENTERPRISE_LEARNER_PORTAL_BASE_URL = 'http://localhost:8734'
-
 ENTERPRISE_MARKETING_FOOTER_QUERY_PARAMS = {}
 
 CREDENTIALS_SERVICE_USERNAME = 'credentials_worker'
diff --git a/lms/envs/test.py b/lms/envs/test.py
index 38d0e394f7..04eef4ee13 100644
--- a/lms/envs/test.py
+++ b/lms/envs/test.py
@@ -500,6 +500,9 @@ FRONTEND_LOGIN_URL = '/login'
 FRONTEND_LOGOUT_URL = '/logout'
 FRONTEND_REGISTER_URL = '/register'
 
+# Programs Learner Portal URL
+LEARNER_PORTAL_URL_ROOT = 'http://localhost:8734'
+
 ECOMMERCE_API_URL = 'https://ecommerce.example.com/api/v2/'
 ECOMMERCE_PUBLIC_URL_ROOT = None
 ENTERPRISE_API_URL = 'http://enterprise.example.com/enterprise/api/v1/'
diff --git a/openedx/core/djangoapps/user_authn/views/login_form.py b/openedx/core/djangoapps/user_authn/views/login_form.py
index adabf22f02..4323de52a8 100644
--- a/openedx/core/djangoapps/user_authn/views/login_form.py
+++ b/openedx/core/djangoapps/user_authn/views/login_form.py
@@ -232,7 +232,6 @@ def login_and_registration_form(request, initial_mode="login"):
             settings.FEATURES['ENABLE_COMBINED_LOGIN_REGISTRATION_FOOTER']
         ),
     }
-
     enterprise_customer = enterprise_customer_for_request(request)
     update_logistration_context_for_enterprise(request, context, enterprise_customer)
 
diff --git a/openedx/core/djangoapps/user_authn/views/tests/test_logistration.py b/openedx/core/djangoapps/user_authn/views/tests/test_logistration.py
index fbdab0bf1a..bd20182ef3 100644
--- a/openedx/core/djangoapps/user_authn/views/tests/test_logistration.py
+++ b/openedx/core/djangoapps/user_authn/views/tests/test_logistration.py
@@ -424,15 +424,17 @@ class LoginAndRegistrationTest(ThirdPartyAuthTestMixin, UrlResetMixin, ModuleSto
 
     @mock.patch('openedx.core.djangoapps.user_authn.views.login_form.enterprise_customer_for_request')
     @ddt.data(
-        ('signin_user', False, None, None),
-        ('register_user', False, None, None),
-        ('signin_user', True, 'Fake EC', 'http://logo.com/logo.jpg'),
-        ('register_user', True, 'Fake EC', 'http://logo.com/logo.jpg'),
-        ('signin_user', True, 'Fake EC', None),
-        ('register_user', True, 'Fake EC', None),
+        ('signin_user', False, None, None, False),
+        ('register_user', False, None, None, False),
+        ('signin_user', True, 'Fake EC', 'http://logo.com/logo.jpg', False),
+        ('register_user', True, 'Fake EC', 'http://logo.com/logo.jpg', False),
+        ('signin_user', True, 'Fake EC', 'http://logo.com/logo.jpg', True),
+        ('register_user', True, 'Fake EC', 'http://logo.com/logo.jpg', True),
+        ('signin_user', True, 'Fake EC', None, False),
+        ('register_user', True, 'Fake EC', None, False),
     )
     @ddt.unpack
-    def test_enterprise_register(self, url_name, ec_present, ec_name, logo_url, mock_get_ec):
+    def test_enterprise_register(self, url_name, ec_present, ec_name, logo_url, is_proxy, mock_get_ec):
         """
         Verify that when an EnterpriseCustomer is received on the login and register views,
         the appropriate sidebar is rendered.
@@ -445,7 +447,11 @@ class LoginAndRegistrationTest(ThirdPartyAuthTestMixin, UrlResetMixin, ModuleSto
         else:
             mock_get_ec.return_value = None
 
-        response = self.client.get(reverse(url_name), HTTP_ACCEPT="text/html")
+        params = []
+        if is_proxy:
+            params.append(("proxy_login", "True"))
+
+        response = self.client.get(reverse(url_name), params, HTTP_ACCEPT="text/html")
 
         enterprise_sidebar_div_id = u'enterprise-content-container'
 
@@ -453,7 +459,10 @@ class LoginAndRegistrationTest(ThirdPartyAuthTestMixin, UrlResetMixin, ModuleSto
             self.assertNotContains(response, text=enterprise_sidebar_div_id)
         else:
             self.assertContains(response, text=enterprise_sidebar_div_id)
-            welcome_message = settings.ENTERPRISE_SPECIFIC_BRANDED_WELCOME_TEMPLATE
+            if is_proxy:
+                welcome_message = settings.ENTERPRISE_PROXY_LOGIN_WELCOME_TEMPLATE
+            else:
+                welcome_message = settings.ENTERPRISE_SPECIFIC_BRANDED_WELCOME_TEMPLATE
             expected_message = Text(welcome_message).format(
                 start_bold=HTML('<b>'),
                 end_bold=HTML('</b>'),
diff --git a/openedx/features/enterprise_support/api.py b/openedx/features/enterprise_support/api.py
index 6c3a501b3b..6aef2315ba 100644
--- a/openedx/features/enterprise_support/api.py
+++ b/openedx/features/enterprise_support/api.py
@@ -450,7 +450,7 @@ def enterprise_customer_for_request(request):
     Check all the context clues of the request to determine if
     the request being made is tied to a particular EnterpriseCustomer.
     """
-    if 'enterprise_customer' in request.session:
+    if 'enterprise_customer' in request.session and request.session['enterprise_customer']:
         return enterprise_customer_from_cache(request=request)
     else:
         enterprise_customer = enterprise_customer_from_api(request)
diff --git a/openedx/features/enterprise_support/utils.py b/openedx/features/enterprise_support/utils.py
index 91d102d08b..62c95dab14 100644
--- a/openedx/features/enterprise_support/utils.py
+++ b/openedx/features/enterprise_support/utils.py
@@ -51,7 +51,8 @@ def update_logistration_context_for_enterprise(request, context, enterprise_cust
     """
     sidebar_context = {}
     if enterprise_customer:
-        sidebar_context = get_enterprise_sidebar_context(enterprise_customer)
+        is_proxy_login = request.GET.get('proxy_login')
+        sidebar_context = get_enterprise_sidebar_context(enterprise_customer, is_proxy_login)
 
     if sidebar_context:
         context['data']['registration_form_desc']['fields'] = enterprise_fields_only(
@@ -67,7 +68,7 @@ def update_logistration_context_for_enterprise(request, context, enterprise_cust
     update_third_party_auth_context_for_enterprise(request, context, enterprise_customer)
 
 
-def get_enterprise_sidebar_context(enterprise_customer):
+def get_enterprise_sidebar_context(enterprise_customer, is_proxy_login):
     """
     Get context information for enterprise sidebar for the given enterprise customer.
 
@@ -84,10 +85,16 @@ def get_enterprise_sidebar_context(enterprise_customer):
     branding_configuration = enterprise_customer.get('branding_configuration', {})
     logo_url = branding_configuration.get('logo', '') if isinstance(branding_configuration, dict) else ''
 
-    branded_welcome_template = configuration_helpers.get_value(
-        'ENTERPRISE_SPECIFIC_BRANDED_WELCOME_TEMPLATE',
-        settings.ENTERPRISE_SPECIFIC_BRANDED_WELCOME_TEMPLATE
-    )
+    if is_proxy_login:
+        branded_welcome_template = configuration_helpers.get_value(
+            'ENTERPRISE_PROXY_LOGIN_WELCOME_TEMPLATE',
+            settings.ENTERPRISE_PROXY_LOGIN_WELCOME_TEMPLATE
+        )
+    else:
+        branded_welcome_template = configuration_helpers.get_value(
+            'ENTERPRISE_SPECIFIC_BRANDED_WELCOME_TEMPLATE',
+            settings.ENTERPRISE_SPECIFIC_BRANDED_WELCOME_TEMPLATE
+        )
 
     branded_welcome_string = Text(branded_welcome_template).format(
         start_bold=HTML('<b>'),
diff --git a/requirements/constraints.txt b/requirements/constraints.txt
index 0955b63059..8ac580ddcb 100644
--- a/requirements/constraints.txt
+++ b/requirements/constraints.txt
@@ -40,7 +40,7 @@ drf-yasg<1.17.1
 # The team that owns this package will manually bump this package rather than having it pulled in automatically.
 # This is to allow them to better control its deployment and to do it in a process that works better
 # for them.
-edx-enterprise==3.4.27
+edx-enterprise==3.4.28
 
 # Upgrading to 2.12.0 breaks several test classes due to API changes, need to update our code accordingly
 factory-boy==2.8.1
diff --git a/requirements/edx/base.txt b/requirements/edx/base.txt
index b01acaf1b3..72897368bf 100644
--- a/requirements/edx/base.txt
+++ b/requirements/edx/base.txt
@@ -99,7 +99,7 @@ edx-django-release-util==0.4.4  # via -r requirements/edx/base.in
 edx-django-sites-extensions==2.5.1  # via -r requirements/edx/base.in
 edx-django-utils==3.5.0   # via -r requirements/edx/base.in, django-config-models, edx-drf-extensions, edx-enterprise, edx-rest-api-client, edx-when
 edx-drf-extensions==6.1.1  # via -r requirements/edx/base.in, edx-completion, edx-enterprise, edx-organizations, edx-proctoring, edx-rbac, edx-when, edxval
-edx-enterprise==3.4.27    # via -c requirements/edx/../constraints.txt, -r requirements/edx/base.in
+edx-enterprise==3.4.28    # via -c requirements/edx/../constraints.txt, -r requirements/edx/base.in
 edx-i18n-tools==0.5.3     # via ora2
 edx-milestones==0.3.0     # via -r requirements/edx/base.in
 edx-opaque-keys[django]==2.1.1  # via -r requirements/edx/paver.txt, edx-bulk-grades, edx-ccx-keys, edx-completion, edx-drf-extensions, edx-enterprise, edx-milestones, edx-organizations, edx-proctoring, edx-user-state-client, edx-when, xmodule
@@ -165,7 +165,7 @@ nodeenv==1.4.0            # via -r requirements/edx/base.in
 numpy==1.18.5             # via -c requirements/edx/../constraints.txt, chem, openedx-calc, scipy
 oauthlib==3.0.1           # via -c requirements/edx/../constraints.txt, -r requirements/edx/base.in, django-oauth-toolkit, lti-consumer-xblock, requests-oauthlib, social-auth-core
 openedx-calc==1.0.9       # via -r requirements/edx/base.in
-ora2==2.8.8               # via -r requirements/edx/base.in
+ora2==2.8.9               # via -r requirements/edx/base.in
 packaging==20.4           # via bleach, drf-yasg
 path.py==12.4.0           # via edx-enterprise, edx-i18n-tools, ora2, xmodule
 path==13.1.0              # via -c requirements/edx/../constraints.txt, -r requirements/edx/paver.txt, path.py
diff --git a/requirements/edx/coverage.txt b/requirements/edx/coverage.txt
index 2276c00f93..4d921836b4 100644
--- a/requirements/edx/coverage.txt
+++ b/requirements/edx/coverage.txt
@@ -4,7 +4,7 @@
 #
 #    make upgrade
 #
-coverage==5.2             # via -r requirements/edx/coverage.in
+coverage==5.2.1           # via -r requirements/edx/coverage.in
 diff-cover==3.0.1         # via -r requirements/edx/coverage.in
 importlib-metadata==1.7.0  # via inflect, pluggy
 inflect==3.0.2            # via -c requirements/edx/../constraints.txt, jinja2-pluralize
diff --git a/requirements/edx/development.txt b/requirements/edx/development.txt
index fed4d32430..97dc882a46 100644
--- a/requirements/edx/development.txt
+++ b/requirements/edx/development.txt
@@ -48,7 +48,7 @@ colorama==0.4.1           # via -r requirements/edx/testing.txt, radon
 contextlib2==0.6.0.post1  # via -r requirements/edx/testing.txt
 coreapi==2.3.3            # via -r requirements/edx/testing.txt, drf-yasg
 coreschema==0.0.4         # via -r requirements/edx/testing.txt, coreapi, drf-yasg
-coverage==5.2             # via -r requirements/edx/testing.txt, pytest-cov
+coverage==5.2.1           # via -r requirements/edx/testing.txt, pytest-cov
 git+https://github.com/nedbat/coverage_pytest_plugin.git@29de030251471e200ff255eb9e549218cd60e872#egg=coverage_pytest_plugin==0.0  # via -r requirements/edx/testing.txt
 crowdsourcehinter-xblock==0.6  # via -r requirements/edx/testing.txt
 cryptography==3.0         # via -r requirements/edx/testing.txt, django-fernet-fields, edx-enterprise, pdfminer.six, pyjwt, social-auth-core
@@ -111,7 +111,7 @@ edx-django-release-util==0.4.4  # via -r requirements/edx/testing.txt
 edx-django-sites-extensions==2.5.1  # via -r requirements/edx/testing.txt
 edx-django-utils==3.5.0   # via -r requirements/edx/testing.txt, django-config-models, edx-drf-extensions, edx-enterprise, edx-rest-api-client, edx-when
 edx-drf-extensions==6.1.1  # via -r requirements/edx/testing.txt, edx-completion, edx-enterprise, edx-organizations, edx-proctoring, edx-rbac, edx-when, edxval
-edx-enterprise==3.4.27    # via -c requirements/edx/../constraints.txt, -r requirements/edx/testing.txt
+edx-enterprise==3.4.28    # via -c requirements/edx/../constraints.txt, -r requirements/edx/testing.txt
 edx-i18n-tools==0.5.3     # via -r requirements/edx/testing.txt, ora2
 edx-lint==1.5.0           # via -r requirements/edx/testing.txt
 edx-milestones==0.3.0     # via -r requirements/edx/testing.txt
@@ -200,7 +200,7 @@ nodeenv==1.4.0            # via -r requirements/edx/testing.txt
 numpy==1.18.5             # via -c requirements/edx/../constraints.txt, -r requirements/edx/testing.txt, chem, openedx-calc, scipy
 oauthlib==3.0.1           # via -c requirements/edx/../constraints.txt, -r requirements/edx/testing.txt, django-oauth-toolkit, lti-consumer-xblock, requests-oauthlib, social-auth-core
 openedx-calc==1.0.9       # via -r requirements/edx/testing.txt
-ora2==2.8.8               # via -r requirements/edx/testing.txt
+ora2==2.8.9               # via -r requirements/edx/testing.txt
 packaging==20.4           # via -r requirements/edx/testing.txt, bleach, drf-yasg, pytest, sphinx, tox
 path.py==12.4.0           # via -r requirements/edx/testing.txt, edx-enterprise, edx-i18n-tools, ora2, xmodule
 path==13.1.0              # via -c requirements/edx/../constraints.txt, -r requirements/edx/testing.txt, path.py
@@ -314,7 +314,7 @@ unidiff==0.6.0            # via -r requirements/edx/testing.txt, coverage-pytest
 uritemplate==3.0.1        # via -r requirements/edx/testing.txt, coreapi, drf-yasg
 urllib3==1.25.10          # via -r requirements/edx/testing.txt, elasticsearch, geoip2, requests, selenium, transifex-client
 user-util==0.2            # via -r requirements/edx/testing.txt
-virtualenv==20.0.27       # via -r requirements/edx/testing.txt, tox
+virtualenv==20.0.28       # via -r requirements/edx/testing.txt, tox
 voluptuous==0.11.7        # via -r requirements/edx/testing.txt, ora2
 vulture==1.5              # via -r requirements/edx/development.in
 watchdog==0.10.3          # via -r requirements/edx/testing.txt
diff --git a/requirements/edx/testing.txt b/requirements/edx/testing.txt
index 956d9b5d51..ca03a483ec 100644
--- a/requirements/edx/testing.txt
+++ b/requirements/edx/testing.txt
@@ -47,7 +47,7 @@ colorama==0.4.1           # via radon
 contextlib2==0.6.0.post1  # via -r requirements/edx/base.txt
 coreapi==2.3.3            # via -r requirements/edx/base.txt, drf-yasg
 coreschema==0.0.4         # via -r requirements/edx/base.txt, coreapi, drf-yasg
-coverage==5.2             # via -r requirements/edx/coverage.txt, pytest-cov
+coverage==5.2.1           # via -r requirements/edx/coverage.txt, pytest-cov
 git+https://github.com/nedbat/coverage_pytest_plugin.git@29de030251471e200ff255eb9e549218cd60e872#egg=coverage_pytest_plugin==0.0  # via -r requirements/edx/testing.in
 crowdsourcehinter-xblock==0.6  # via -r requirements/edx/base.txt
 cryptography==3.0         # via -r requirements/edx/base.txt, django-fernet-fields, edx-enterprise, pdfminer.six, pyjwt, social-auth-core
@@ -108,7 +108,7 @@ edx-django-release-util==0.4.4  # via -r requirements/edx/base.txt
 edx-django-sites-extensions==2.5.1  # via -r requirements/edx/base.txt
 edx-django-utils==3.5.0   # via -r requirements/edx/base.txt, django-config-models, edx-drf-extensions, edx-enterprise, edx-rest-api-client, edx-when
 edx-drf-extensions==6.1.1  # via -r requirements/edx/base.txt, edx-completion, edx-enterprise, edx-organizations, edx-proctoring, edx-rbac, edx-when, edxval
-edx-enterprise==3.4.27    # via -c requirements/edx/../constraints.txt, -r requirements/edx/base.txt
+edx-enterprise==3.4.28    # via -c requirements/edx/../constraints.txt, -r requirements/edx/base.txt
 edx-i18n-tools==0.5.3     # via -r requirements/edx/base.txt, -r requirements/edx/testing.in, ora2
 edx-lint==1.5.0           # via -r requirements/edx/testing.in
 edx-milestones==0.3.0     # via -r requirements/edx/base.txt
@@ -192,7 +192,7 @@ nodeenv==1.4.0            # via -r requirements/edx/base.txt
 numpy==1.18.5             # via -c requirements/edx/../constraints.txt, -r requirements/edx/base.txt, chem, openedx-calc, scipy
 oauthlib==3.0.1           # via -c requirements/edx/../constraints.txt, -r requirements/edx/base.txt, django-oauth-toolkit, lti-consumer-xblock, requests-oauthlib, social-auth-core
 openedx-calc==1.0.9       # via -r requirements/edx/base.txt
-ora2==2.8.8               # via -r requirements/edx/base.txt
+ora2==2.8.9               # via -r requirements/edx/base.txt
 packaging==20.4           # via -r requirements/edx/base.txt, bleach, drf-yasg, pytest, tox
 path.py==12.4.0           # via -r requirements/edx/base.txt, edx-enterprise, edx-i18n-tools, ora2, xmodule
 path==13.1.0              # via -c requirements/edx/../constraints.txt, -r requirements/edx/base.txt, path.py
@@ -293,7 +293,7 @@ unidiff==0.6.0            # via -r requirements/edx/testing.in, coverage-pytest-
 uritemplate==3.0.1        # via -r requirements/edx/base.txt, coreapi, drf-yasg
 urllib3==1.25.10          # via -r requirements/edx/base.txt, elasticsearch, geoip2, requests, selenium, transifex-client
 user-util==0.2            # via -r requirements/edx/base.txt
-virtualenv==20.0.27       # via tox
+virtualenv==20.0.28       # via tox
 voluptuous==0.11.7        # via -r requirements/edx/base.txt, ora2
 watchdog==0.10.3          # via -r requirements/edx/base.txt
 wcwidth==0.2.5            # via pytest