diff --git a/angular.json b/angular.json
index faaad1f..c76d25a 100644
--- a/angular.json
+++ b/angular.json
@@ -30,12 +30,7 @@
             "styles": [
               "src/styles.css"
             ],
-            "scripts": [],
-            "server": "src/main.server.ts",
-            "prerender": true,
-            "ssr": {
-              "entry": "server.ts"
-            }
+            "scripts": []
           },
           "configurations": {
             "production": {
diff --git a/src/app/auth.service.ts b/src/app/auth.service.ts
index 8e341bf..55196b9 100644
--- a/src/app/auth.service.ts
+++ b/src/app/auth.service.ts
@@ -1,7 +1,7 @@
-import { Injectable } from '@angular/core';
-import { CookieService } from 'ngx-cookie-service';
-import { Author } from './models/author';
-import { BehaviorSubject } from 'rxjs';
+import {Injectable} from '@angular/core';
+import {CookieService} from 'ngx-cookie-service';
+import {Author} from './models/author';
+import {BehaviorSubject} from 'rxjs';
 import {DateTime} from 'luxon';
 
 @Injectable({
@@ -16,28 +16,33 @@ export class AuthService {
   }
 
   isAuthenticated(): boolean {
-    return this.cookieService.check("author") &&
-      this.cookieService.check("token") &&
-      this.cookieService.check("token-expiration-date") &&
-      this.cookieService.get("author") !== '' &&
-      this.cookieService.get("token-expiration-date") !== '' &&
-      this.cookieService.get("token") !== '';
+    return sessionStorage.getItem("author") !== null &&
+      sessionStorage.getItem("token") !== null &&
+      sessionStorage.getItem("token-expiration-date") !== null;
   }
 
-  getTokenExpirationDate(): DateTime {
-    return DateTime.fromISO(this.cookieService.get("token-expiration-date"));
+  getTokenExpirationDate(): string | null {
+    return sessionStorage.getItem("token-expiration-date");
   }
 
   isSessionExpired(): boolean {
-    return this.getTokenExpirationDate() < DateTime.now() && this.isAuthenticated();
+    const tokenExpirationDate = this.getTokenExpirationDate();
+    if (tokenExpirationDate) {
+      return DateTime.fromISO(tokenExpirationDate) < DateTime.now() && this.isAuthenticated();
+    }
+    return true
   }
 
-  getAuthenticatedAuthor(): Author {
-    return JSON.parse(this.cookieService.get('author'));
+  getAuthenticatedAuthor(): Author | null {
+    const authorStr = sessionStorage.getItem('author')
+    if (authorStr) {
+      return JSON.parse(authorStr);
+    }
+    return null;
   }
 
-  getAuthenticatedAuthorToken(): string {
-    return this.cookieService.get('token');
+  getAuthenticatedAuthorToken(): string | null{
+    return sessionStorage.getItem('token');
   }
 
   setSessionExpired(expired: boolean) {
diff --git a/src/app/components/comment-form/comment-form.component.ts b/src/app/components/comment-form/comment-form.component.ts
index 56d2dca..964c803 100644
--- a/src/app/components/comment-form/comment-form.component.ts
+++ b/src/app/components/comment-form/comment-form.component.ts
@@ -36,8 +36,8 @@ export class CommentFormComponent {
   }
 
   onSubmit() {
-    let token: string = this.authService.getAuthenticatedAuthorToken();
-    let author: Author = this.authService.getAuthenticatedAuthor();
+    let token = this.authService.getAuthenticatedAuthorToken();
+    let author = this.authService.getAuthenticatedAuthor();
     if (this.commentForm.valid && author && token && this.commentForm.value.content) {
       // get l'image de profile après avoir créé le commentaire
       this.subs.push(this.commentService.create(this.commentForm.value.content, this.postId, author.id, token).subscribe({
diff --git a/src/app/components/header/header.component.ts b/src/app/components/header/header.component.ts
index 1ff54ca..bce565c 100644
--- a/src/app/components/header/header.component.ts
+++ b/src/app/components/header/header.component.ts
@@ -25,8 +25,9 @@ export class HeaderComponent {
   }
 
   private initializeMenu(): void {
-    if (!(this.authService.isSessionExpired()) && this.authService.isAuthenticated()) {
-      this.actualAuthor = this.authService.getAuthenticatedAuthor();
+    const authenticatedAuthor = this.authService.getAuthenticatedAuthor();
+    if (!(this.authService.isSessionExpired()) && this.authService.isAuthenticated() && authenticatedAuthor) {
+      this.actualAuthor = authenticatedAuthor;
     }
 
     if (this.actualAuthor) {
diff --git a/src/app/components/post-form/post-form.component.ts b/src/app/components/post-form/post-form.component.ts
index e0da7ee..0ff8b47 100644
--- a/src/app/components/post-form/post-form.component.ts
+++ b/src/app/components/post-form/post-form.component.ts
@@ -105,9 +105,9 @@ export class PostFormComponent implements OnDestroy {
 
       if (this.isUpdateMode && this.postId) {
         this.subs.push(
-          this.postService.updatePost(this.postId, postData, this.authService.getAuthenticatedAuthorToken()).pipe(
+          this.postService.updatePost(this.postId, postData, this.authService.getAuthenticatedAuthorToken()!).pipe(
             mergeMap((_) => {
-              return this.postService.changeIllustration(this.postId, this.uploadedFile, this.authService.getAuthenticatedAuthorToken());
+              return this.postService.changeIllustration(this.postId, this.uploadedFile, this.authService.getAuthenticatedAuthorToken()!);
             })
           ).subscribe({
             next: (_) => {
@@ -118,11 +118,11 @@ export class PostFormComponent implements OnDestroy {
         );
       } else {
         this.subs.push(
-          this.postService.createPost(postData, this.authService.getAuthenticatedAuthorToken()).pipe(
+          this.postService.createPost(postData, this.authService.getAuthenticatedAuthorToken()!).pipe(
             mergeMap(post =>
-              this.authorService.attributePost(this.actualAuthor?.id, post.id, this.authService.getAuthenticatedAuthorToken()).pipe(
+              this.authorService.attributePost(this.actualAuthor?.id, post.id, this.authService.getAuthenticatedAuthorToken()!).pipe(
                 mergeMap((_) =>
-                  this.postService.changeIllustration(post.id, this.uploadedFile, this.authService.getAuthenticatedAuthorToken()),
+                  this.postService.changeIllustration(post.id, this.uploadedFile, this.authService.getAuthenticatedAuthorToken()!),
                 )
               )
             )
diff --git a/src/app/components/register-form/register-form.component.ts b/src/app/components/register-form/register-form.component.ts
index 04f09db..306245f 100644
--- a/src/app/components/register-form/register-form.component.ts
+++ b/src/app/components/register-form/register-form.component.ts
@@ -37,7 +37,7 @@ export class RegisterFormComponent implements OnDestroy {
   ];
   subs: Subscription[] = [];
   form: FormGroup;
-  actualAuthor: Author | undefined;
+  actualAuthor: string | undefined;
 
   constructor(private formBuilder: FormBuilder,
               private authorService: AuthorService,
@@ -45,8 +45,9 @@ export class RegisterFormComponent implements OnDestroy {
               private messageService: MessageService,
               private authService: AuthService,
   ) {
-    if (!(this.authService.isSessionExpired()) && this.authService.isAuthenticated()) {
-      this.actualAuthor = this.authService.getAuthenticatedAuthor();
+    const authenticatedAuthor = this.authService.getAuthenticatedAuthorToken();
+    if (!(this.authService.isSessionExpired()) && this.authService.isAuthenticated() && authenticatedAuthor) {
+      this.actualAuthor = authenticatedAuthor;
     }
     this.form = this.formBuilder.group({
       username: ['', [Validators.required, Validators.maxLength(255)]],
@@ -83,7 +84,7 @@ export class RegisterFormComponent implements OnDestroy {
           this.username,
           this.password,
           this.role,
-          this.authService.getAuthenticatedAuthorToken()).subscribe({
+          this.authService.getAuthenticatedAuthorToken()!).subscribe({
           next: (author: Author) => {
             this.successMessage('Succès', `Auteur ${author.name} créé avec succès`);
             this.createdAuthor.emit(author);
diff --git a/src/app/components/update-profile-form/update-profile-form.component.ts b/src/app/components/update-profile-form/update-profile-form.component.ts
index 6900917..b0ae7a7 100644
--- a/src/app/components/update-profile-form/update-profile-form.component.ts
+++ b/src/app/components/update-profile-form/update-profile-form.component.ts
@@ -80,7 +80,7 @@ export class UpdateProfileFormComponent implements OnDestroy {
   }
 
   onSubmit() {
-    const token: string = this.authService.getAuthenticatedAuthorToken();
+    const token = this.authService.getAuthenticatedAuthorToken();
     if (this.form.valid && token && this.password === this.passwordConfirm) {
       const newUsername = this.form.value.username;
       if (this.uploadedFile) {
diff --git a/src/app/guards/writer.guard.ts b/src/app/guards/writer.guard.ts
index ad596bd..176e691 100644
--- a/src/app/guards/writer.guard.ts
+++ b/src/app/guards/writer.guard.ts
@@ -1,17 +1,18 @@
 import {CanActivateFn, Router} from '@angular/router';
 import {inject} from '@angular/core';
-import {CookieService} from 'ngx-cookie-service';
 import {AuthService} from '../auth.service';
 import {Role} from '../models/role';
 
 export const writerGuard: CanActivateFn = (route, state) => {
   const router = inject(Router);
-  const cookieService = inject(CookieService);
   const authService = inject(AuthService);
+  const authorStr = sessionStorage.getItem("author");
 
-  if ((authService.isAuthenticated() && JSON.parse(cookieService.get("author")).role !== Role.WRITER) || !authService.isAuthenticated()) {
-    router.navigate(['/']);
+  if (authorStr) {
+    if ((authService.isAuthenticated() && JSON.parse(authorStr).role !== Role.WRITER) || !authService.isAuthenticated()) {
+      router.navigate(['/']);
+    }
+    return true;
   }
-
-  return true;
+  return false;
 };
diff --git a/src/app/pages/home/home.component.ts b/src/app/pages/home/home.component.ts
index 1aa49d1..7fc4c66 100644
--- a/src/app/pages/home/home.component.ts
+++ b/src/app/pages/home/home.component.ts
@@ -29,9 +29,9 @@ export class HomeComponent implements OnDestroy {
   constructor(
     private postService: PostService,
     private authService: AuthService) {
-
-    if (!(this.authService.isSessionExpired()) && this.authService.isAuthenticated()) {
-      this.actualAuthor = this.authService.getAuthenticatedAuthor();
+    const authenticatedAuthor = this.authService.getAuthenticatedAuthor();
+    if (!(this.authService.isSessionExpired()) && this.authService.isAuthenticated() && authenticatedAuthor) {
+      this.actualAuthor = authenticatedAuthor;
     } else {
       this.authService.checkSessionExpiration();
     }
diff --git a/src/app/pages/login/login.component.ts b/src/app/pages/login/login.component.ts
index 65e14a7..f056b75 100644
--- a/src/app/pages/login/login.component.ts
+++ b/src/app/pages/login/login.component.ts
@@ -35,9 +35,9 @@ export class LoginComponent implements OnDestroy {
 
   constructor(private authorService: AuthorService,
               private messageService: MessageService,
-              private cookieService: CookieService,
               private router: Router,
-              private configurationService: ConfigurationService,) {}
+              private configurationService: ConfigurationService,) {
+  }
 
   sendLogins(): void {
     if (this.password === this.confirmPassword) {
@@ -45,26 +45,15 @@ export class LoginComponent implements OnDestroy {
       (
         this.authorService.login(this.name, this.password).pipe(
           switchMap((tokenObj: any) => {
-            this.cookieService.delete('token', '/', this.configurationService.getDomain())
-            this.cookieService.set("token", tokenObj.token, {
-              domain: this.configurationService.getDomain(),
-              secure: true,
-              path: '/'
-            });
+            // sessionStorage.removeItem('token');
+            sessionStorage.setItem('token', tokenObj.token);
             return this.authorService.me(tokenObj.token)
           }))
           .subscribe({
             next: (author: Author) => {
-              this.cookieService.delete('author', '/', this.configurationService.getDomain())
-              this.cookieService.set("author", JSON.stringify(author), {
-                domain: this.configurationService.getDomain(),
-                secure : true,
-                path: '/' });
-              this.cookieService.set('token-expiration-date', DateTime.now().plus({millisecond: this.configurationService.getTokenTTL()}).toISO(), {
-                domain: this.configurationService.getDomain(),
-                secure: true,
-                path: '/',
-              })
+              // sessionStorage.removeItem('author');
+              sessionStorage.setItem('author', JSON.stringify(author));
+              sessionStorage.setItem('token-expiration-date', DateTime.now().plus({millisecond: this.configurationService.getTokenTTL()}).toISO())
               this.getAuthorCookie();
               this.router.navigate(['/']).then(() => {
                 this.successMessage('Connecté avec succès', 'Heureux de vous revoir ' + this.actualAuthor?.name)
@@ -79,7 +68,10 @@ export class LoginComponent implements OnDestroy {
   }
 
   getAuthorCookie(): void {
-    this.actualAuthor = JSON.parse(this.cookieService.get("author"));
+    const authorStr = sessionStorage.getItem('author');
+    if (authorStr) {
+      this.actualAuthor = JSON.parse(authorStr);
+    }
   }
 
   successMessage(summary: string, detail: string): void {
diff --git a/src/app/pages/my-posts/my-posts.component.ts b/src/app/pages/my-posts/my-posts.component.ts
index 18923f6..c264556 100644
--- a/src/app/pages/my-posts/my-posts.component.ts
+++ b/src/app/pages/my-posts/my-posts.component.ts
@@ -37,14 +37,17 @@ export class MyPostsComponent implements OnDestroy {
   updateDialogVisibility: boolean[] = [];
   deleteDialogVisibility: boolean[] = [];
   posts: Post[] = [];
-  actualAuthor: Author;
+  actualAuthor: Author | undefined;
 
 
   constructor(private authService: AuthService,
               private postService: PostService,
               private authorService: AuthorService,
               private messageService: MessageService) {
-    this.actualAuthor = this.authService.getAuthenticatedAuthor();
+    const authenticatedAuthor = this.authService.getAuthenticatedAuthor();
+    if (authenticatedAuthor) {
+      this.actualAuthor = authenticatedAuthor;
+    }
     this.updatePosts();
   }
 
@@ -59,8 +62,9 @@ export class MyPostsComponent implements OnDestroy {
   }
 
   updatePosts(): void {
-    if (!(this.authService.isSessionExpired()) && this.authService.isAuthenticated()) {
-      this.authorService.getAuthorsPosts(this.actualAuthor?.id, this.authService.getAuthenticatedAuthorToken()).subscribe({
+    const authorToken = this.authService.getAuthenticatedAuthorToken()
+    if (!(this.authService.isSessionExpired()) && this.authService.isAuthenticated() && authorToken) {
+      this.authorService.getAuthorsPosts(this.actualAuthor?.id, authorToken).subscribe({
           next: posts => this.posts = posts,
           error: error => this.failureMessage("Erreur", error.error.message),
         }
@@ -71,13 +75,16 @@ export class MyPostsComponent implements OnDestroy {
   }
 
   deletePost(id: bigint, rowIndex: number) {
-    this.postService.deletePost(id, this.authService.getAuthenticatedAuthorToken()).subscribe({
-      next: (_) => {
-        this.updatePosts()
-        this.successMessage("Post supprimé", "Ce post a été supprimé avec succès")
-      },
-      error: error => this.failureMessage("Erreur", error.error.message),
-    });
+    const authorToken = this.authService.getAuthenticatedAuthorToken()
+    if (authorToken) {
+      this.postService.deletePost(id, authorToken).subscribe({
+        next: (_) => {
+          this.updatePosts()
+          this.successMessage("Post supprimé", "Ce post a été supprimé avec succès")
+        },
+        error: error => this.failureMessage("Erreur", error.error.message),
+      });
+    }
     this.closeDialog(this.deleteDialogVisibility, rowIndex)
   }
 
diff --git a/src/app/pages/new-post/new-post.component.ts b/src/app/pages/new-post/new-post.component.ts
index 98c3cd6..3daad9f 100644
--- a/src/app/pages/new-post/new-post.component.ts
+++ b/src/app/pages/new-post/new-post.component.ts
@@ -40,7 +40,7 @@ export class NewPostComponent implements OnDestroy {
               private postService: PostService,
               private authorService: AuthorService,
               private messageService: MessageService,
-              private authService : AuthService,
+              private authService: AuthService,
               private router: Router) {
     this.form = this.formBuilder.group({
       description: ['', [Validators.required, Validators.maxLength(512)]],
@@ -49,7 +49,10 @@ export class NewPostComponent implements OnDestroy {
       category: ['', [Validators.required, Validators.maxLength(50)]],
     });
     if (!(this.authService.isSessionExpired()) && this.authService.isAuthenticated()) {
-      this.actualAuthor = this.authService.getAuthenticatedAuthor();
+      const authenticatedAuthor = this.authService.getAuthenticatedAuthor();
+      if (authenticatedAuthor) {
+        this.actualAuthor = authenticatedAuthor;
+      }
     } else {
       this.authService.checkSessionExpiration();
     }
@@ -72,26 +75,31 @@ export class NewPostComponent implements OnDestroy {
         category: formData.category as string
       };
 
-      this.subs.push(
-        this.postService.createPost(postToPost, this.authService.getAuthenticatedAuthorToken()).pipe(
-          mergeMap(post =>
-            this.authorService.attributePost(this.actualAuthor?.id, post.id, this.authService.getAuthenticatedAuthorToken()).pipe(
-              mergeMap((_) =>
-                this.postService.changeIllustration(post.id, this.uploadedFile, this.authService.getAuthenticatedAuthorToken()),
+      const authenticatedAuthor = this.authService.getAuthenticatedAuthorToken();
+      if (authenticatedAuthor) {
+        this.subs.push(
+          this.postService.createPost(postToPost, authenticatedAuthor).pipe(
+            mergeMap(post =>
+              this.authorService.attributePost(this.actualAuthor?.id, post.id, authenticatedAuthor).pipe(
+                mergeMap((_) =>
+                  this.postService.changeIllustration(post.id, this.uploadedFile, authenticatedAuthor),
+                )
               )
             )
-          )
-        ).subscribe({
-          next: () => {
-            this.router.navigate(['/']).then(() => {
-              this.successMessage('Succès', 'Post créé avec succès')
-            });
-          },
-          error: (err) => {
-            this.failureMessage('Erreur', err.error.message);
-          }
-        })
-      );
+          ).subscribe({
+            next: () => {
+              this.router.navigate(['/']).then(() => {
+                this.successMessage('Succès', 'Post créé avec succès')
+              });
+            },
+            error: (err) => {
+              this.failureMessage('Erreur', err.error.message);
+            }
+          })
+        );
+      } else {
+        console.error("Profil mal chargé")
+      }
     }
   }
 
diff --git a/src/app/pages/post/post.component.ts b/src/app/pages/post/post.component.ts
index 07d87e2..8b4cc4d 100644
--- a/src/app/pages/post/post.component.ts
+++ b/src/app/pages/post/post.component.ts
@@ -49,7 +49,12 @@ export class PostComponent {
               private authService: AuthService,) {
     this.route.paramMap.subscribe(params => {
       if (!(this.authService.isSessionExpired()) && this.authService.isAuthenticated()) {
-        this.actualAuthor = this.authService.getAuthenticatedAuthor();
+        const authenticatedAuthor = this.authService.getAuthenticatedAuthor();
+        if (authenticatedAuthor) {
+          this.actualAuthor = authenticatedAuthor;
+        } else {
+          console.error('Profil mal chargé');
+        }
       } else {
         this.authService.checkSessionExpiration();
       }
diff --git a/src/app/pages/profile/profile.component.ts b/src/app/pages/profile/profile.component.ts
index ad47caf..adf896b 100644
--- a/src/app/pages/profile/profile.component.ts
+++ b/src/app/pages/profile/profile.component.ts
@@ -43,7 +43,12 @@ export class ProfileComponent implements OnDestroy {
       }));
     })
     if (!(this.authService.isSessionExpired()) && this.authService.isAuthenticated()) {
-      this.actualAuthor = this.authService.getAuthenticatedAuthor();
+      const authenticatedAuthor = this.authService.getAuthenticatedAuthor();
+      if (authenticatedAuthor) {
+        this.actualAuthor = authenticatedAuthor;
+      } else {
+        console.error("Profil mal chargé");
+      }
     } else {
       this.authService.checkSessionExpiration();
     }