diff --git a/docs/RELEASE_CHECKLIST.md b/docs/RELEASE_CHECKLIST.md
index efbc066..3861126 100644
--- a/docs/RELEASE_CHECKLIST.md
+++ b/docs/RELEASE_CHECKLIST.md
@@ -80,6 +80,7 @@ Test on Chrome Stable, Firefox Stable, Edge Stable, and current Arc. Test Safari
 - [ ] On a blocked local HTML file in Chrome, choose **Allow local files**, approve Chrome's toggle, return to the file, and confirm App Notes reloads it automatically.
 - [ ] Confirm local notes default to **This file**; switch to **This folder** and verify sibling-file notes appear while a different folder remains isolated.
 - [ ] Restricted browser pages fail gracefully without broken controls.
+- [ ] On a tab opened before installing App Notes, the popup offers **Reload page**, and annotations work after it. Browser store pages say App Notes isn't available and offer no reload.
 - [ ] Switch the operating system/browser between light and dark appearance; popup, composer, toast, markers, and notes workspace update automatically and remain legible on both light and dark host pages.
 - [ ] Keyboard focus order, visible focus, screen-reader labels, and 200% zoom are usable.
 - [ ] Reduced-motion mode avoids unnecessary motion.
diff --git a/entrypoints/popup/App.tsx b/entrypoints/popup/App.tsx
index 90dfe80..880ad6a 100644
--- a/entrypoints/popup/App.tsx
+++ b/entrypoints/popup/App.tsx
@@ -21,6 +21,10 @@ import {
 } from '@/lib/storage';
 import { openNotesWorkspace } from '@/lib/open-notes-workspace';
 import { parseOpenLocalFileSettingsResult } from '@/lib/local-file-access';
+import {
+  parsePageReloadAttempt,
+  resolveUnreachablePageAvailability,
+} from '@/lib/page-availability';
 import type { AnnotationCollectionIdentity } from '@/lib/annotation-scope';
 
 interface AnnotationModeResponse {
@@ -31,9 +35,20 @@ type PageAvailability =
   | 'checking'
   | 'file-access-blocked'
   | 'file-reload-required'
+  | 'page-reload-required'
   | 'ready'
   | 'unsupported';
 
+const PAGE_RELOAD_ATTEMPT_KEY = 'app-notes:page-reload-attempt';
+
+function getUnreachableAvailability(tabId: number, url: string): PageAvailability {
+  return resolveUnreachablePageAvailability(
+    tabId,
+    url,
+    parsePageReloadAttempt(localStorage.getItem(PAGE_RELOAD_ATTEMPT_KEY)),
+  );
+}
+
 function parseAnnotationModeResponse(value: unknown): AnnotationModeResponse | null {
   if (typeof value !== 'object' || value === null) return null;
   const active = Reflect.get(value, 'active');
@@ -96,15 +111,14 @@ function App() {
         const response = parseAnnotationModeResponse(rawResponse);
         if (cancelled) return;
         if (!response) {
-          setAvailability(isLocalFileUrl(tab.url) ? 'file-reload-required' : 'unsupported');
+          setAvailability(getUnreachableAvailability(tab.id, tab.url));
           return;
         }
+        localStorage.removeItem(PAGE_RELOAD_ATTEMPT_KEY);
         setActive(response.active);
         setAvailability('ready');
       } catch {
-        if (!cancelled) {
-          setAvailability(isLocalFileUrl(tab.url) ? 'file-reload-required' : 'unsupported');
-        }
+        if (!cancelled) setAvailability(getUnreachableAvailability(tab.id, tab.url));
       }
     };
 
@@ -154,7 +168,7 @@ function App() {
       }
       setActive(response.active);
     } catch {
-      setAvailability(isLocalFileUrl(currentUrl) ? 'file-reload-required' : 'unsupported');
+      setAvailability(getUnreachableAvailability(tabId, currentUrl));
     } finally {
       setIsToggling(false);
     }
@@ -181,14 +195,20 @@ function App() {
     }
   };
 
-  const handleReloadLocalFile = async () => {
+  const handleReloadTab = async () => {
     if (tabId === null || isToggling) return;
     setIsToggling(true);
     try {
       await browser.tabs.reload(tabId);
+      if (availability === 'page-reload-required') {
+        localStorage.setItem(
+          PAGE_RELOAD_ATTEMPT_KEY,
+          JSON.stringify({ tabId, url: currentUrl }),
+        );
+      }
       window.close();
     } catch {
-      setStatus('Reload this file, then open App Notes again.');
+      setStatus(`Reload this ${availability === 'file-reload-required' ? 'file' : 'page'}, then open App Notes again.`);
       setIsToggling(false);
     }
   };
@@ -246,6 +266,8 @@ function App() {
         return 'Chrome needs one approval to open local files.';
       case 'file-reload-required':
         return 'Reload this file to finish enabling App Notes.';
+      case 'page-reload-required':
+        return 'Reload this page to start using App Notes.';
       case 'unsupported':
         return 'App Notes isn’t available on this page.';
       case 'ready':
@@ -263,13 +285,19 @@ function App() {
       ? {
           icon: <RotateCw size={15} />,
           label: 'Reload local file',
-          onClick: handleReloadLocalFile,
+          onClick: handleReloadTab,
         }
-      : {
-          icon: active ? <Check size={15} /> : <Power size={15} />,
-          label: active ? 'Annotations enabled' : 'Enable annotations',
-          onClick: toggleMode,
-        };
+      : availability === 'page-reload-required'
+        ? {
+            icon: <RotateCw size={15} />,
+            label: 'Reload page',
+            onClick: handleReloadTab,
+          }
+        : {
+            icon: active ? <Check size={15} /> : <Power size={15} />,
+            label: active ? 'Annotations enabled' : 'Enable annotations',
+            onClick: toggleMode,
+          };
 
   return (
     <main className="p-2" aria-label="App Notes controls">
diff --git a/lib/page-availability.test.ts b/lib/page-availability.test.ts
new file mode 100644
index 0000000..a487544
--- /dev/null
+++ b/lib/page-availability.test.ts
@@ -0,0 +1,70 @@
+import { describe, expect, test } from 'bun:test';
+import {
+  parsePageReloadAttempt,
+  resolveUnreachablePageAvailability,
+} from './page-availability';
+
+describe('unreachable page availability', () => {
+  test('offers a reload for a website tab with no content script', () => {
+    expect(resolveUnreachablePageAvailability(7, 'https://example.com/a', null))
+      .toBe('page-reload-required');
+  });
+
+  test('keeps the local-file reload flow', () => {
+    expect(resolveUnreachablePageAvailability(7, 'file:///tmp/a.html', null))
+      .toBe('file-reload-required');
+  });
+
+  test.each([
+    'https://chromewebstore.google.com/detail/app-notes/lkknpieefdjpoancolcioblkpgnhpffl',
+    'https://chrome.google.com/webstore/category/extensions',
+    'https://microsoftedge.microsoft.com/addons/detail/example',
+    'https://addons.mozilla.org/en-US/firefox/',
+  ])('never offers a reload on a browser store page: %s', (url) => {
+    expect(resolveUnreachablePageAvailability(7, url, null)).toBe('unsupported');
+  });
+
+  test('offers a reload on other pages of hosts that only block a store path', () => {
+    expect(resolveUnreachablePageAvailability(7, 'https://chrome.google.com/intl/en/chrome/', null))
+      .toBe('page-reload-required');
+    expect(resolveUnreachablePageAvailability(7, 'https://microsoftedge.microsoft.com/other', null))
+      .toBe('page-reload-required');
+  });
+
+  test('stops offering a reload once that page stayed silent after one', () => {
+    const url = 'https://blocked-by-policy.example/';
+    expect(resolveUnreachablePageAvailability(7, url, { tabId: 7, url })).toBe('unsupported');
+  });
+
+  test('still offers a reload for a different tab or page', () => {
+    const url = 'https://example.com/a';
+    expect(resolveUnreachablePageAvailability(8, url, { tabId: 7, url }))
+      .toBe('page-reload-required');
+    expect(resolveUnreachablePageAvailability(7, 'https://example.com/b', { tabId: 7, url }))
+      .toBe('page-reload-required');
+  });
+});
+
+describe('page reload attempt parsing', () => {
+  test('parses a valid attempt as a fresh DTO', () => {
+    expect(parsePageReloadAttempt(JSON.stringify({
+      tabId: 7,
+      url: 'https://example.com/',
+      ignored: true,
+    }))).toEqual({ tabId: 7, url: 'https://example.com/' });
+  });
+
+  test.each([
+    null,
+    '',
+    'not json',
+    'null',
+    '[]',
+    '{"tabId":-1,"url":"https://example.com/"}',
+    '{"tabId":1.5,"url":"https://example.com/"}',
+    '{"tabId":"7","url":"https://example.com/"}',
+    '{"tabId":7}',
+  ])('rejects malformed input: %s', (input) => {
+    expect(parsePageReloadAttempt(input)).toBeNull();
+  });
+});
diff --git a/lib/page-availability.ts b/lib/page-availability.ts
new file mode 100644
index 0000000..8432e43
--- /dev/null
+++ b/lib/page-availability.ts
@@ -0,0 +1,72 @@
+import { isLocalFileUrl } from './annotation-scope';
+
+/** What the popup offers when a tab's content script does not answer. */
+export type UnreachablePageAvailability =
+  | 'file-reload-required'
+  | 'page-reload-required'
+  | 'unsupported';
+
+/** The page the popup last reloaded to start its content script. */
+export interface PageReloadAttempt {
+  readonly tabId: number;
+  readonly url: string;
+}
+
+/** Store pages where browsers never run extension content scripts. */
+const BROWSER_STORE_PAGES: ReadonlyArray<{
+  readonly hostname: string;
+  readonly pathPrefix: string;
+}> = [
+  { hostname: 'chromewebstore.google.com', pathPrefix: '/' },
+  { hostname: 'chrome.google.com', pathPrefix: '/webstore' },
+  { hostname: 'microsoftedge.microsoft.com', pathPrefix: '/addons' },
+  { hostname: 'addons.mozilla.org', pathPrefix: '/' },
+];
+
+function isBrowserStorePage(url: string): boolean {
+  try {
+    const { hostname, pathname } = new URL(url);
+    return BROWSER_STORE_PAGES.some((page) => (
+      hostname === page.hostname && pathname.startsWith(page.pathPrefix)
+    ));
+  } catch {
+    return false;
+  }
+}
+
+/**
+ * Decide what to offer when an annotatable tab has no content script.
+ *
+ * Tabs opened before App Notes was installed need one reload. Browsers also
+ * block extensions on pages no list can fully name, such as sites restricted by
+ * policy, so a page that stays silent after a reload is reported as unavailable
+ * instead of offering the same reload forever.
+ */
+export function resolveUnreachablePageAvailability(
+  tabId: number,
+  url: string,
+  lastAttempt: PageReloadAttempt | null,
+): UnreachablePageAvailability {
+  if (isLocalFileUrl(url)) return 'file-reload-required';
+  if (isBrowserStorePage(url)) return 'unsupported';
+  if (lastAttempt?.tabId === tabId && lastAttempt.url === url) return 'unsupported';
+  return 'page-reload-required';
+}
+
+/** Parse a persisted reload attempt. */
+export function parsePageReloadAttempt(input: string | null): PageReloadAttempt | null {
+  if (input === null) return null;
+
+  let value: unknown;
+  try {
+    value = JSON.parse(input);
+  } catch {
+    return null;
+  }
+
+  if (typeof value !== 'object' || value === null) return null;
+  const tabId = Reflect.get(value, 'tabId');
+  const url = Reflect.get(value, 'url');
+  if (typeof tabId !== 'number' || !Number.isSafeInteger(tabId) || tabId < 0) return null;
+  return typeof url === 'string' ? { tabId, url } : null;
+}
diff --git a/package.json b/package.json
index 8481890..e35c9d1 100644
--- a/package.json
+++ b/package.json
@@ -2,7 +2,7 @@
   "name": "@plannotator/app-notes",
   "description": "A local-first browser extension for annotating elements on any web page.",
   "private": true,
-  "version": "0.1.2",
+  "version": "0.1.3",
   "license": "SEE LICENSE IN LICENSE",
   "author": {
     "name": "Michael Ramos",