diff --git a/x-pack/plugins/security_solution/public/common/containers/source/index.test.tsx b/x-pack/plugins/security_solution/public/common/containers/source/index.test.tsx
index c30c3668638a..69e4ac615ebf 100644
--- a/x-pack/plugins/security_solution/public/common/containers/source/index.test.tsx
+++ b/x-pack/plugins/security_solution/public/common/containers/source/index.test.tsx
@@ -17,6 +17,24 @@ jest.mock('../../utils/apollo_context', () => ({
 }));
 
 describe('Index Fields & Browser Fields', () => {
+  test('At initialization the value of indicesExists should be true', async () => {
+    const { result, waitForNextUpdate } = renderHook(() => useWithSource());
+    const initialResult = result.current;
+
+    await waitForNextUpdate();
+
+    return expect(initialResult).toEqual({
+      browserFields: {},
+      errorMessage: null,
+      indexPattern: {
+        fields: [],
+        title: 'apm-*-transaction*,auditbeat-*,endgame-*,filebeat-*,packetbeat-*,winlogbeat-*',
+      },
+      indicesExist: true,
+      loading: true,
+    });
+  });
+
   test('returns memoized value', async () => {
     const { result, waitForNextUpdate, rerender } = renderHook(() => useWithSource());
     await waitForNextUpdate();
diff --git a/x-pack/plugins/security_solution/public/common/containers/source/index.tsx b/x-pack/plugins/security_solution/public/common/containers/source/index.tsx
index 34ac5f8f5d94..5e80953914c9 100644
--- a/x-pack/plugins/security_solution/public/common/containers/source/index.tsx
+++ b/x-pack/plugins/security_solution/public/common/containers/source/index.tsx
@@ -102,7 +102,7 @@ export const useWithSource = (sourceId = 'default', indexToAdd?: string[] | null
     browserFields: EMPTY_BROWSER_FIELDS,
     errorMessage: null,
     indexPattern: getIndexFields(defaultIndex.join(), []),
-    indicesExist: undefined,
+    indicesExist: indicesExistOrDataTemporarilyUnavailable(undefined),
     loading: false,
   });
 
diff --git a/x-pack/plugins/security_solution/public/common/translations.ts b/x-pack/plugins/security_solution/public/common/translations.ts
index b5a400d187f8..677543ec0dba 100644
--- a/x-pack/plugins/security_solution/public/common/translations.ts
+++ b/x-pack/plugins/security_solution/public/common/translations.ts
@@ -7,12 +7,12 @@
 import { i18n } from '@kbn/i18n';
 
 export const EMPTY_TITLE = i18n.translate('xpack.securitySolution.pages.common.emptyTitle', {
-  defaultMessage: 'Welcome to SIEM. Let’s get you started.',
+  defaultMessage: 'Welcome to Security Solution. Let’s get you started.',
 });
 
 export const EMPTY_MESSAGE = i18n.translate('xpack.securitySolution.pages.common.emptyMessage', {
   defaultMessage:
-    'To begin using security information and event management (SIEM), you’ll need to add SIEM-related data, in Elastic Common Schema (ECS) format, to the Elastic Stack. An easy way to get started is by installing and configuring our data shippers, called Beats. Let’s do that now!',
+    'To begin using security information and event management (Security Solution), you’ll need to add security solution related data, in Elastic Common Schema (ECS) format, to the Elastic Stack. An easy way to get started is by installing and configuring our data shippers, called Beats. Let’s do that now!',
 });
 
 export const EMPTY_ACTION_PRIMARY = i18n.translate(
diff --git a/x-pack/plugins/security_solution/public/plugin.tsx b/x-pack/plugins/security_solution/public/plugin.tsx
index 360c81abadc8..b247170a4a5d 100644
--- a/x-pack/plugins/security_solution/public/plugin.tsx
+++ b/x-pack/plugins/security_solution/public/plugin.tsx
@@ -16,6 +16,7 @@ import {
   PluginInitializerContext,
   Plugin as IPlugin,
   DEFAULT_APP_CATEGORIES,
+  AppNavLinkStatus,
 } from '../../../../src/core/public';
 import { Storage } from '../../../../src/plugins/kibana_utils/public';
 import { FeatureCatalogueCategory } from '../../../../src/plugins/home/public';
@@ -35,6 +36,7 @@ import {
   APP_CASES_PATH,
   SHOW_ENDPOINT_ALERTS_NAV,
   APP_ENDPOINT_ALERTS_PATH,
+  APP_PATH,
 } from '../common/constants';
 import { ConfigureEndpointDatasource } from './management/pages/policy/view/ingest_manager_integration/configure_datasource';
 
@@ -86,18 +88,18 @@ export class Plugin implements IPlugin<PluginSetup, PluginStart, SetupPlugins, S
       return { coreStart, startPlugins, services, store: this.store, storage };
     };
 
-    // Waiting for https://github.com/elastic/kibana/issues/69110
-    // core.application.register({
-    //   id: APP_ID,
-    //   title: 'Security',
-    //   appRoute: APP_PATH,
-    //   navLinkStatus: AppNavLinkStatus.hidden,
-    //   mount: async (params: AppMountParameters) => {
-    //     const [{ application }] = await core.getStartServices();
-    //     application.navigateToApp(`${APP_ID}:${SecurityPageName.overview}`, { replace: true });
-    //     return () => true;
-    //   },
-    // });
+    core.application.register({
+      exactRoute: true,
+      id: APP_ID,
+      title: 'Security',
+      appRoute: APP_PATH,
+      navLinkStatus: AppNavLinkStatus.hidden,
+      mount: async (params: AppMountParameters) => {
+        const [{ application }] = await core.getStartServices();
+        application.navigateToApp(`${APP_ID}:${SecurityPageName.overview}`, { replace: true });
+        return () => true;
+      },
+    });
 
     core.application.register({
       id: `${APP_ID}:${SecurityPageName.overview}`,