diff --git a/services/web/frontend/js/features/settings/components/emails/add-email.tsx b/services/web/frontend/js/features/settings/components/emails/add-email.tsx
index a530c610c7..f976ecb83e 100644
--- a/services/web/frontend/js/features/settings/components/emails/add-email.tsx
+++ b/services/web/frontend/js/features/settings/components/emails/add-email.tsx
@@ -264,7 +264,24 @@ function AddEmailViaSSO({
   domainInfo: DomainInfo
   userInstitutions: string[]
 }) {
-  if (domainInfo.university.ssoEnabled) {
+  if (
+    domainInfo.group?.domainCaptureEnabled &&
+    domainInfo.group?.managedUsersEnabled
+  ) {
+    return (
+      <Notification
+        type="error"
+        ariaLive="polite"
+        content={
+          <>
+            Your company email address has been registered under a verified
+            domain, and cannot be added as a secondary email. Please create a
+            new <strong>Overleaf</strong> account linked to this email address.
+          </>
+        }
+      />
+    )
+  } else if (domainInfo.university.ssoEnabled) {
     // Check if the user has already linked this institution
     if (userInstitutions.includes(domainInfo.university.id.toString())) {
       return (
@@ -281,23 +298,6 @@ function AddEmailViaSSO({
       )
     }
     return <SsoLinkingInfo email={email} domainInfo={domainInfo} />
-  } else if (
-    domainInfo.group?.domainCaptureEnabled &&
-    domainInfo.group?.managedUsersEnabled
-  ) {
-    return (
-      <Notification
-        type="error"
-        ariaLive="polite"
-        content={
-          <>
-            Your company email address has been registered under a verified
-            domain, and cannot be added as a secondary email. Please create a
-            new <strong>Overleaf</strong> account linked to this email address.
-          </>
-        }
-      />
-    )
   } else if (
     domainInfo.group?.domainCaptureEnabled &&
     domainInfo.group?.ssoConfig?.enabled
diff --git a/services/web/test/frontend/features/settings/components/emails/emails-section-add-new-email.test.tsx b/services/web/test/frontend/features/settings/components/emails/emails-section-add-new-email.test.tsx
index c8093d1834..e98fd26965 100644
--- a/services/web/test/frontend/features/settings/components/emails/emails-section-add-new-email.test.tsx
+++ b/services/web/test/frontend/features/settings/components/emails/emails-section-add-new-email.test.tsx
@@ -830,8 +830,7 @@ describe('<EmailsSection />', function () {
       })
     })
 
-    describe('if Commons SSO then enabled, that takes priority over group UI', function () {
-      // we shouldn't have SSO config in v1 and in v2 but adding test to ensure Commons takes priority
+    describe('if Commons SSO is enabled and managed users is not enabled, Commons takes priority over group UI', function () {
       beforeEach(async function () {
         await fetchMock.callHistory.flush(true)
         fetchMock.removeRoutes().clearHistory()
@@ -874,5 +873,57 @@ describe('<EmailsSection />', function () {
         })
       })
     })
+
+    describe('if Commons SSO is enabled and managed users is enabled, group domain capture takes priority', function () {
+      beforeEach(async function () {
+        await fetchMock.callHistory.flush(true)
+        fetchMock.removeRoutes().clearHistory()
+        const institution = {
+          university: {
+            id: 1234,
+            ssoEnabled: true,
+            name: 'Auto Complete University',
+          },
+          hostname: 'autocomplete.edu',
+          confirmed: true,
+          group: {
+            domainCaptureEnabled: true,
+            managedUsersEnabled: true,
+            ssoConfig: {
+              enabled: true,
+            },
+          },
+        }
+
+        fetchMock.get('express:/institutions/domains', [institution])
+      })
+
+      it('renders group domain-capture error instead of Commons UI', async function () {
+        fetchMock.get('/user/emails?ensureAffiliation=true', [])
+        render(<EmailsSection />)
+
+        const button = await screen.findByRole<HTMLButtonElement>('button', {
+          name: 'Add another email',
+        })
+
+        await userEvent.click(button)
+
+        const input = screen.getByRole('textbox', { name: 'Email' })
+        fireEvent.change(input, {
+          target: { value: 'user@autocomplete.edu' },
+        })
+
+        const notification = await screen.findByRole('alert')
+        within(notification).getByText(
+          'Your company email address has been registered under a verified domain, and cannot be added as a secondary email.',
+          { exact: false }
+        )
+        expect(
+          screen.queryByRole('button', {
+            name: 'Link accounts and add email',
+          })
+        ).to.be.null
+      })
+    })
   })
 })