diff --git a/.claude/references/auth/oauth-flow.md b/.claude/references/auth/oauth-flow.md
index 26b6bd8..8becae6 100644
--- a/.claude/references/auth/oauth-flow.md
+++ b/.claude/references/auth/oauth-flow.md
@@ -17,7 +17,7 @@ id_token verification, profile mapping, and RP-initiated logout via `endsession`
 - `src/lib/env.ts` — `getMpBaseUrl()`, `getAuthBaseUrl()`, `getMpClient()` (validated env readers)
 - `src/app/signin/sign-in-content.tsx` — calls `authClient.signIn.social({ provider: "ministryplatform", callbackURL })`
 - `src/app/api/auth/[...all]/route.ts` — deny-by-default allowlist in front of `toNextJsHandler(auth)`
-- `src/components/shared-actions/sign-out.ts` — `handleSignOut()` server action (the only caller is the `/session-error` form)
+- `src/components/shared-actions/sign-out.ts` — `handleSignOut()` server action (called by the sign-out forms on `/no-access` and `/session-error`)
 - Tests: `src/auth.oidc-discovery.test.ts` (outages, lazy discovery), `src/auth.user-info.test.ts` (`getUserInfo` with signed tokens), `src/auth.id-token-sign-in.test.ts` (F12), `src/auth.shared-instance.test.ts`, `src/auth.test.ts` (config pins), `src/components/shared-actions/sign-out.test.ts`; mock MP in `src/test-utils/mock-oidc.ts`
 
 ## Key concepts
diff --git a/.claude/references/data-flow/call-graphs.md b/.claude/references/data-flow/call-graphs.md
index fd57a7a..bd0380a 100644
--- a/.claude/references/data-flow/call-graphs.md
+++ b/.claude/references/data-flow/call-graphs.md
@@ -188,8 +188,8 @@ last_verified: 2026-04-17
 
 ## Flow 6: Sign-out (OIDC logout)
 
-**Trigger:** user submits the "Sign out" form on `/session-error` — the only sign-out control in the app (the dropdown `UserMenu` was removed 2026-10-10).
-**Entry point:** `src/app/session-error/page.tsx` — `<form action={handleSignOut}>`.
+**Trigger:** user submits a sign-out form — on `/no-access` (signed in, no MP security role) or `/session-error` (session without `userGuid`). These are the app's only sign-out controls (the dropdown `UserMenu` was removed 2026-10-10).
+**Entry points:** `src/app/(web)/no-access/page.tsx` and `src/app/session-error/page.tsx` — `<form action={handleSignOut}>`.
 
 **Stack trace:**
 1. `src/components/shared-actions/sign-out.ts` — `handleSignOut` (`'use server'`).
diff --git a/.claude/references/security/README.md b/.claude/references/security/README.md
index 5eebce0..d5e13ac 100644
--- a/.claude/references/security/README.md
+++ b/.claude/references/security/README.md
@@ -24,10 +24,10 @@ policy. Read this before changing anything under `src/lib/auth.ts`,
 Sign-in is deliberately **not** role-gated — no check in `getUserInfo`,
 `mapProfileToUser`, `customSession` or `AuthWrapper` — so a role-less user still
 gets a session and the app shell. They are redirected from `/tools/*` to
-`/no-access`, which renders inside the shell. **There is no sign-out control on
-`/no-access`** — the only one in the app is the `/session-error` form (the
-dropdown `UserMenu` was removed 2026-10-10). Such a session ends at the 12 h
-hard lifetime or when the browser drops the cookie.
+`/no-access`, which renders inside the shell and carries a **Sign out** form
+(`handleSignOut`) so they can end the session, e.g. to sign in as a different
+MP user. That form and the one on `/session-error` are the app's only sign-out
+controls (the dropdown `UserMenu` was removed 2026-10-10).
 
 ### Why authentication is not enough
 
@@ -256,9 +256,10 @@ against a production build before calling it done.
 
 Last walk: **2026-10-10**, enforced policy, production build — sign-in, every
 tool, Radix select/popover/command and dialog (scroll-lock `<style>` applied),
-zero violations. Sign-out was not walked: its only control is on
-`/session-error`, which a healthy session never reaches. `form-action` still
-allows the MP origin for that form's redirect chain.
+zero violations. Sign-out walked the same day from the `/no-access` form: MP
+logout → back to the app → `/signin` → MP login prompt (both sessions ended),
+zero violations — the `form-action` MP origin is what lets that redirect chain
+through.
 
 ### `CSP_REPORT_URI` (opt-in reporting)
 
diff --git a/README.md b/README.md
index 9f3c76d..9709027 100644
--- a/README.md
+++ b/README.md
@@ -588,7 +588,7 @@ Alert, Alert Dialog, Avatar, Badge, Breadcrumb, Button, Card, Checkbox, Command,
 - **address-labels/** — 12 components for address label printing, barcode generation, and mail merge
 - **field-management/** — Drag-and-drop editor for MP page field order and flags (`PageSearch`, `FieldOrderEditor`, sortable group/field items, `useFieldOrderState`)
 - **dev-panel/** — Unified developer overlay (localhost-only) showing parsed URL params, MP selection data, contact records, and authorized tools
-- **shared-actions/** — Cross-feature server actions (`getCurrentUserProfile()` — returns the *calling* user's MP profile; the `User_GUID` comes from the session, never from a parameter); `handleSignOut()` — app sign-out plus MP RP-initiated logout, used by `/session-error`
+- **shared-actions/** — Cross-feature server actions (`getCurrentUserProfile()` — returns the *calling* user's MP profile; the `User_GUID` comes from the session, never from a parameter); `handleSignOut()` — app sign-out plus MP RP-initiated logout, used by the sign-out forms on `/no-access` and `/session-error`
 
 All components use kebab-case file naming, PascalCase component names, and named exports with barrel index files.
 
diff --git a/src/app/(web)/no-access/page.test.tsx b/src/app/(web)/no-access/page.test.tsx
index ddb53f4..0264e06 100644
--- a/src/app/(web)/no-access/page.test.tsx
+++ b/src/app/(web)/no-access/page.test.tsx
@@ -1,16 +1,26 @@
-import { describe, it, expect, afterEach } from 'vitest';
+import { describe, it, expect, vi, afterEach } from 'vitest';
 import { render, screen, cleanup } from '@testing-library/react';
 
+const { mockHandleSignOut } = vi.hoisted(() => ({
+  mockHandleSignOut: vi.fn(),
+}));
+
+vi.mock('@/components/shared-actions/sign-out', () => ({
+  handleSignOut: mockHandleSignOut,
+}));
+
 import NoAccessPage from './page';
 
 /**
  * This page is the landing spot for a signed-in user with no MP security role.
- * It lives inside the (web) route group specifically so the app shell — and
- * therefore the sign-out control — stays reachable. These tests pin the copy
- * that tells the user what to do, since that copy IS the feature.
+ * Sign-in is not role-gated, so the user has a session; these tests pin the copy
+ * that tells them what to do and the sign-out form that lets them end it.
  */
 
-afterEach(cleanup);
+afterEach(() => {
+  cleanup();
+  vi.clearAllMocks();
+});
 
 describe('NoAccessPage', () => {
   it('renders a heading explaining the user lacks access', () => {
@@ -33,4 +43,14 @@ describe('NoAccessPage', () => {
 
     expect(screen.getByText(/ask your ministry platform administrator/i)).toBeInTheDocument();
   });
+
+  it('renders a sign-out submit button wired to the handleSignOut action', () => {
+    // Without it a role-less user is stuck in their session until the 12 h
+    // lifetime ends — there is no other sign-out control on this page.
+    const { container } = render(<NoAccessPage />);
+
+    const button = screen.getByRole('button', { name: /^sign out$/i });
+    expect(button).toHaveAttribute('type', 'submit');
+    expect(button.closest('form')).toBe(container.querySelector('form'));
+  });
 });
diff --git a/src/app/(web)/no-access/page.tsx b/src/app/(web)/no-access/page.tsx
index d694261..223601f 100644
--- a/src/app/(web)/no-access/page.tsx
+++ b/src/app/(web)/no-access/page.tsx
@@ -1,21 +1,34 @@
+import { handleSignOut } from "@/components/shared-actions/sign-out";
+
 /**
  * Explaining page for signed-in users who hold no MP security role.
  *
- * Deliberately inside the `(web)` route group so it renders WITH the app shell:
- * the header, user menu and — critically — the sign-out control stay available.
- * Refusing these users at sign-in instead would strand them in the app with no
- * way out, which is why sign-in is not role-gated (see AuthorizationService).
+ * Sign-in is deliberately not role-gated (see AuthorizationService), so these
+ * users DO have a session — and this page must give them a way to end it, e.g.
+ * to sign in again as a different MP user. The form below is that way out; the
+ * app has no other sign-out control outside `/session-error`.
+ *
+ * It sits inside the `(web)` group, so AuthWrapper renders it per request (it
+ * reads the session), which keeps the CSP nonce available for the form.
  */
 export default function NoAccessPage() {
   return (
     <div className="flex items-center justify-center min-h-[60vh] px-4">
       <div className="max-w-md text-center">
         <h1 className="text-2xl font-semibold mb-3">You don&apos;t have access to this tool</h1>
-        <p className="text-gray-600">
+        <p className="text-gray-600 mb-6">
           Your Ministry Platform account signed in successfully, but it
           doesn&apos;t have a security role that grants access to these tools.
           Ask your Ministry Platform administrator to assign one.
         </p>
+        <form action={handleSignOut}>
+          <button
+            type="submit"
+            className="inline-flex items-center justify-center rounded-md bg-[#344767] px-5 py-2.5 text-white font-medium hover:bg-[#2d3a5f] focus:outline-none focus:ring-2 focus:ring-blue-300"
+          >
+            Sign out
+          </button>
+        </form>
       </div>
     </div>
   );
diff --git a/src/components/shared-actions/README.md b/src/components/shared-actions/README.md
index 3e9fd60..f81624c 100644
--- a/src/components/shared-actions/README.md
+++ b/src/components/shared-actions/README.md
@@ -19,7 +19,7 @@ Keep actions with their component folder when:
 
 **Shared Actions (place here):**
 - `user.ts` - Current-user profile lookup used by contexts and components
-- `sign-out.ts` - `handleSignOut`: app sign-out plus MP RP-initiated logout (used by `/session-error`)
+- `sign-out.ts` - `handleSignOut`: app sign-out plus MP RP-initiated logout (used by the sign-out forms on `/no-access` and `/session-error`)
 - `auth.ts` - Authentication actions used across the app
 - `analytics.ts` - Analytics tracking used by multiple features
 - `notifications.ts` - Notification system used app-wide