diff --git a/src/modules/app/browser-app.config.ts b/src/modules/app/browser-app.config.ts
index 48de49fe7e..7659edf94c 100644
--- a/src/modules/app/browser-app.config.ts
+++ b/src/modules/app/browser-app.config.ts
@@ -3,12 +3,9 @@ import {
   provideHttpClient,
   withInterceptorsFromDi,
 } from '@angular/common/http';
-import {
-  APP_INITIALIZER,
-  NgModule,
-} from '@angular/core';
 import {
   APP_ID,
+  APP_INITIALIZER,
   ApplicationConfig,
   importProvidersFrom,
   makeStateKey,
@@ -53,10 +50,10 @@ import { ClientCookieService } from '../../app/core/services/client-cookie.servi
 import { CookieService } from '../../app/core/services/cookie.service';
 import { HardRedirectService } from '../../app/core/services/hard-redirect.service';
 import { ReferrerService } from '../../app/core/services/referrer.service';
-import { BrowserXSRFService } from '../../app/core/xsrf/browser-xsrf.service';
-import { XSRFService } from '../../app/core/xsrf/xsrf.service';
 import { ClientMathService } from '../../app/core/shared/client-math.service';
 import { MathService } from '../../app/core/shared/math.service';
+import { BrowserXSRFService } from '../../app/core/xsrf/browser-xsrf.service';
+import { XSRFService } from '../../app/core/xsrf/xsrf.service';
 import { BrowserKlaroService } from '../../app/shared/cookies/browser-klaro.service';
 import { KlaroService } from '../../app/shared/cookies/klaro.service';
 import { MissingTranslationHelper } from '../../app/shared/translate/missing-translation.helper';
diff --git a/src/modules/app/browser-init.service.ts b/src/modules/app/browser-init.service.ts
index 1ba80a4ba3..799910efc6 100644
--- a/src/modules/app/browser-init.service.ts
+++ b/src/modules/app/browser-init.service.ts
@@ -18,6 +18,7 @@ import { Store } from '@ngrx/store';
 import { TranslateService } from '@ngx-translate/core';
 import {
   firstValueFrom,
+  lastValueFrom,
   Subscription,
 } from 'rxjs';
 import {
@@ -124,7 +125,7 @@ export class BrowserInitService extends InitService {
 
       this.initKlaro();
 
-      await this.authenticationReady$().toPromise();
+      await lastValueFrom(this.authenticationReady$());
 
       return true;
     };
@@ -141,10 +142,12 @@ export class BrowserInitService extends InitService {
     const state = this.transferState.get<any>(InitService.NGRX_STATE, null);
     this.transferState.remove(InitService.NGRX_STATE);
     this.store.dispatch(new StoreAction(StoreActionTypes.REHYDRATE, state));
-    return this.store.select(coreSelector).pipe(
-      find((core: any) => isNotEmpty(core)),
-      map(() => true),
-    ).toPromise();
+    return lastValueFrom(
+      this.store.select(coreSelector).pipe(
+        find((core: any) => isNotEmpty(core)),
+        map(() => true),
+      ),
+    );
   }
 
   private trackAuthTokenExpiration(): void {
@@ -190,7 +193,7 @@ export class BrowserInitService extends InitService {
    * @private
    */
   private closeAuthCheckSubscription() {
-    firstValueFrom(this.authenticationReady$()).then(() => {
+    void firstValueFrom(this.authenticationReady$()).then(() => {
       this.sub.unsubscribe();
     });
   }
diff --git a/src/modules/app/server-init.service.ts b/src/modules/app/server-init.service.ts
index 8849e8f00e..6db4f4a48b 100644
--- a/src/modules/app/server-init.service.ts
+++ b/src/modules/app/server-init.service.ts
@@ -8,10 +8,11 @@
 import {
   Inject,
   Injectable,
+  TransferState,
 } from '@angular/core';
-import { TransferState } from '@angular/platform-browser';
 import { Store } from '@ngrx/store';
 import { TranslateService } from '@ngx-translate/core';
+import { lastValueFrom } from 'rxjs';
 import { take } from 'rxjs/operators';
 
 import { AppState } from '../../app/app.reducer';
@@ -75,7 +76,7 @@ export class ServerInitService extends InitService {
       this.initRouteListeners();
       this.themeService.listenForThemeChanges(false);
 
-      await this.authenticationReady$().toPromise();
+      await lastValueFrom(this.authenticationReady$());
 
       return true;
     };