diff --git a/plugins/auth-react/src/hooks/useCookieAuthRefresh/useCookieAuthRefresh.test.tsx b/plugins/auth-react/src/hooks/useCookieAuthRefresh/useCookieAuthRefresh.test.tsx
index 5c754b584c..180de98a46 100644
--- a/plugins/auth-react/src/hooks/useCookieAuthRefresh/useCookieAuthRefresh.test.tsx
+++ b/plugins/auth-react/src/hooks/useCookieAuthRefresh/useCookieAuthRefresh.test.tsx
@@ -16,12 +16,8 @@
 
 import React from 'react';
 import { renderHook, waitFor } from '@testing-library/react';
-import {
-  fetchApiRef,
-  discoveryApiRef,
-  storageApiRef,
-} from '@backstage/core-plugin-api';
-import { MockStorageApi, TestApiProvider } from '@backstage/test-utils';
+import { fetchApiRef, discoveryApiRef } from '@backstage/core-plugin-api';
+import { TestApiProvider } from '@backstage/test-utils';
 import { useCookieAuthRefresh } from './useCookieAuthRefresh';
 
 describe('useCookieAuthRefresh', () => {
@@ -43,8 +39,6 @@ describe('useCookieAuthRefresh', () => {
     }),
   };
 
-  const storageApiMock = MockStorageApi.create();
-
   beforeEach(() => {
     jest.useFakeTimers({ now });
     jest.clearAllMocks();
@@ -69,7 +63,6 @@ describe('useCookieAuthRefresh', () => {
                   fetch: jest.fn().mockRejectedValue(error),
                 },
               ],
-              [storageApiRef, storageApiMock],
               [discoveryApiRef, discoveryApiMock],
             ]}
           >
@@ -100,7 +93,6 @@ describe('useCookieAuthRefresh', () => {
                     .mockReturnValue(new Promise(() => {})),
                 },
               ],
-              [storageApiRef, storageApiMock],
               [discoveryApiRef, discoveryApiMock],
             ]}
           >
@@ -153,7 +145,6 @@ describe('useCookieAuthRefresh', () => {
                     .mockReturnValue(new Promise(() => {})),
                 },
               ],
-              [storageApiRef, storageApiMock],
               [discoveryApiRef, discoveryApiMock],
             ]}
           >
@@ -208,7 +199,6 @@ describe('useCookieAuthRefresh', () => {
                   fetch: jest.fn().mockRejectedValue(error),
                 },
               ],
-              [storageApiRef, storageApiMock],
               [discoveryApiRef, discoveryApiMock],
             ]}
           >
@@ -235,7 +225,6 @@ describe('useCookieAuthRefresh', () => {
           <TestApiProvider
             apis={[
               [fetchApiRef, fetchApiMock],
-              [storageApiRef, storageApiMock],
               [discoveryApiRef, discoveryApiMock],
             ]}
           >
@@ -268,7 +257,6 @@ describe('useCookieAuthRefresh', () => {
         <TestApiProvider
           apis={[
             [fetchApiRef, fetchApiMock],
-            [storageApiRef, storageApiMock],
             [discoveryApiRef, discoveryApiMock],
           ]}
         >
@@ -281,12 +269,14 @@ describe('useCookieAuthRefresh', () => {
       now + 2 * tenMinutesInMilliseconds;
 
     // simulating other tab refreshing the cookie
-    storageApiMock
-      .forBucket(`${pluginId}-auth-cookie-storage`)
-      .set(
-        'expiresAt',
-        new Date(twentyMinutesFromNowInMilliseconds).toISOString(),
-      );
+    new global.BroadcastChannel(
+      `${pluginId}-auth-cookie-expires-at`,
+    ).postMessage({
+      action: 'COOKIE_REFRESH_SUCCESS',
+      payload: {
+        expiresAt: new Date(twentyMinutesFromNowInMilliseconds).toISOString(),
+      },
+    });
 
     // advance the timers in 10 minutes to match the old expires at
     jest.advanceTimersByTime(tenMinutesInMilliseconds);
@@ -309,7 +299,6 @@ describe('useCookieAuthRefresh', () => {
           <TestApiProvider
             apis={[
               [fetchApiRef, fetchApiMock],
-              [storageApiRef, storageApiMock],
               [discoveryApiRef, discoveryApiMock],
             ]}
           >
@@ -345,7 +334,6 @@ describe('useCookieAuthRefresh', () => {
         <TestApiProvider
           apis={[
             [fetchApiRef, fetchApiMock],
-            [storageApiRef, storageApiMock],
             [discoveryApiRef, discoveryApiMock],
           ]}
         >
diff --git a/plugins/auth-react/src/hooks/useCookieAuthRefresh/useCookieAuthRefresh.tsx b/plugins/auth-react/src/hooks/useCookieAuthRefresh/useCookieAuthRefresh.tsx
index b5b5444e71..dfb13289db 100644
--- a/plugins/auth-react/src/hooks/useCookieAuthRefresh/useCookieAuthRefresh.tsx
+++ b/plugins/auth-react/src/hooks/useCookieAuthRefresh/useCookieAuthRefresh.tsx
@@ -14,11 +14,10 @@
  * limitations under the License.
  */
 
-import { useEffect, useCallback } from 'react';
+import { useEffect, useCallback, useMemo } from 'react';
 import {
   discoveryApiRef,
   fetchApiRef,
-  storageApiRef,
   useApi,
 } from '@backstage/core-plugin-api';
 import { useAsync, useMountEffect } from '@react-hookz/web';
@@ -40,10 +39,13 @@ export function useCookieAuthRefresh(options: {
   | { status: 'success'; data: { expiresAt: string } } {
   const { pluginId, path = '/cookie' } = options ?? {};
   const fetchApi = useApi(fetchApiRef);
-  const storageApi = useApi(storageApiRef);
   const discoveryApi = useApi(discoveryApiRef);
 
-  const store = storageApi.forBucket(`${pluginId}-auth-cookie-storage`);
+  const channel = useMemo(() => {
+    return 'BroadcastChannel' in window
+      ? new BroadcastChannel(`${pluginId}-auth-cookie-expires-at`)
+      : null;
+  }, [pluginId]);
 
   const [state, actions] = useAsync<{ expiresAt: string }>(async () => {
     const apiOrigin = await discoveryApi.getBaseUrl(pluginId);
@@ -84,21 +86,26 @@ export function useCookieAuthRefresh(options: {
     if (state.status !== 'success' || !state.result) {
       return () => {};
     }
-    const expiresAt = state.result.expiresAt;
-    store.set('expiresAt', expiresAt);
-    let cancel = refresh({ expiresAt });
-    const subscription = store
-      .observe$<string>('expiresAt')
-      .subscribe(({ value }) => {
-        if (!value) return;
+    channel?.postMessage({
+      action: 'COOKIE_REFRESH_SUCCESS',
+      payload: state.result,
+    });
+    let cancel = refresh(state.result);
+    const listener = (
+      event: MessageEvent<{ action: string; payload: { expiresAt: string } }>,
+    ) => {
+      const { action, payload } = event.data;
+      if (action === 'COOKIE_REFRESH_SUCCESS') {
         cancel();
-        cancel = refresh({ expiresAt: value });
-      });
+        cancel = refresh(payload);
+      }
+    };
+    channel?.addEventListener('message', listener);
     return () => {
       cancel();
-      subscription.unsubscribe();
+      channel?.removeEventListener('message', listener);
     };
-  }, [state, refresh, store]);
+  }, [state, refresh, channel]);
 
   // Initialising
   if (state.status === 'not-executed') {
diff --git a/plugins/auth-react/src/setupTests.ts b/plugins/auth-react/src/setupTests.ts
index 658016ffdd..6580ddffad 100644
--- a/plugins/auth-react/src/setupTests.ts
+++ b/plugins/auth-react/src/setupTests.ts
@@ -14,3 +14,36 @@
  * limitations under the License.
  */
 import '@testing-library/jest-dom';
+
+global.BroadcastChannel = jest
+  .fn()
+  .mockImplementation((_channelName: string) => {
+    const listeners: ((event: { data: any }) => void)[] = [];
+
+    return {
+      addEventListener: (
+        type: string,
+        listener: (event: { data: any }) => void,
+      ) => {
+        if (type === 'message') {
+          listeners.push(listener);
+        }
+      },
+      removeEventListener: (
+        type: string,
+        listener: (event: { data: any }) => void,
+      ) => {
+        if (type === 'message') {
+          const index = listeners.indexOf(listener);
+          if (index !== -1) {
+            listeners.splice(index, 1);
+          }
+        }
+      },
+      postMessage: (message: any) => {
+        listeners.forEach(listener => {
+          listener({ data: message });
+        });
+      },
+    };
+  });
diff --git a/plugins/techdocs-addons-test-utils/src/test-utils.tsx b/plugins/techdocs-addons-test-utils/src/test-utils.tsx
index c3e7281116..51a4650f99 100644
--- a/plugins/techdocs-addons-test-utils/src/test-utils.tsx
+++ b/plugins/techdocs-addons-test-utils/src/test-utils.tsx
@@ -22,17 +22,12 @@ import { screen } from 'testing-library__dom';
 import { Route } from 'react-router-dom';
 import { act, render } from '@testing-library/react';
 
-import {
-  wrapInTestApp,
-  TestApiProvider,
-  MockStorageApi,
-} from '@backstage/test-utils';
+import { wrapInTestApp, TestApiProvider } from '@backstage/test-utils';
 import { FlatRoutes } from '@backstage/core-app-api';
 import {
   ApiRef,
   discoveryApiRef,
   fetchApiRef,
-  storageApiRef,
 } from '@backstage/core-plugin-api';
 
 import {
@@ -78,8 +73,6 @@ const scmIntegrationsApi = {
   fromConfig: jest.fn().mockReturnValue({}),
 };
 
-const storageApiMock = MockStorageApi.create();
-
 const discoveryApi = {
   getBaseUrl: jest
     .fn()
@@ -232,7 +225,6 @@ export class TechDocsAddonTester {
   build() {
     const apis: TechdocsAddonTesterApis<any[]> = [
       [fetchApiRef, fetchApi],
-      [storageApiRef, storageApiMock],
       [discoveryApiRef, discoveryApi],
       [techdocsApiRef, techdocsApi],
       [techdocsStorageApiRef, techdocsStorageApi],
diff --git a/plugins/techdocs/src/reader/components/TechDocsReaderPage/TechDocsReaderPage.test.tsx b/plugins/techdocs/src/reader/components/TechDocsReaderPage/TechDocsReaderPage.test.tsx
index abea660b62..ed8b05c661 100644
--- a/plugins/techdocs/src/reader/components/TechDocsReaderPage/TechDocsReaderPage.test.tsx
+++ b/plugins/techdocs/src/reader/components/TechDocsReaderPage/TechDocsReaderPage.test.tsx
@@ -19,7 +19,6 @@ import { scmIntegrationsApiRef } from '@backstage/integration-react';
 import { entityRouteRef } from '@backstage/plugin-catalog-react';
 import {
   MockConfigApi,
-  MockStorageApi,
   renderInTestApp,
   TestApiProvider,
 } from '@backstage/test-utils';
@@ -39,7 +38,6 @@ import {
   configApiRef,
   discoveryApiRef,
   fetchApiRef,
-  storageApiRef,
 } from '@backstage/core-plugin-api';
 
 const mockEntityMetadata = {
@@ -82,8 +80,6 @@ const techdocsStorageApiMock: jest.Mocked<typeof techdocsStorageApiRef.T> = {
   syncEntityDocs: jest.fn(),
 };
 
-const storageApiMock = MockStorageApi.create();
-
 const discoveryApiMock = {
   getBaseUrl: jest
     .fn()
@@ -121,7 +117,6 @@ const Wrapper = ({ children }: { children: React.ReactNode }) => {
     <TestApiProvider
       apis={[
         [fetchApiRef, fetchApiMock],
-        [storageApiRef, storageApiMock],
         [discoveryApiRef, discoveryApiMock],
         [scmIntegrationsApiRef, {}],
         [configApiRef, configApi],