diff --git a/CHANGELOG.md b/CHANGELOG.md
index a46674ef3..4437d077c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 - Refactored the get holding functionality in the portfolio service
+- Changed the user data loading in the user detail dialog of the admin control panel’s users section to fetch data on demand
 - Improved the language localization for German (`de`)
 - Upgraded `prisma` from version `6.18.0` to `6.19.0`
 
diff --git a/apps/client/src/app/components/admin-users/admin-users.component.ts b/apps/client/src/app/components/admin-users/admin-users.component.ts
index 94b5839c6..6b3335927 100644
--- a/apps/client/src/app/components/admin-users/admin-users.component.ts
+++ b/apps/client/src/app/components/admin-users/admin-users.component.ts
@@ -1,4 +1,12 @@
+import { UserDetailDialogParams } from '@ghostfolio/client/components/user-detail-dialog/interfaces/interfaces';
+import { GfUserDetailDialogComponent } from '@ghostfolio/client/components/user-detail-dialog/user-detail-dialog.component';
+import { ConfirmationDialogType } from '@ghostfolio/client/core/notification/confirmation-dialog/confirmation-dialog.type';
+import { NotificationService } from '@ghostfolio/client/core/notification/notification.service';
+import { AdminService } from '@ghostfolio/client/services/admin.service';
+import { DataService } from '@ghostfolio/client/services/data.service';
+import { ImpersonationStorageService } from '@ghostfolio/client/services/impersonation-storage.service';
 import { TokenStorageService } from '@ghostfolio/client/services/token-storage.service';
+import { UserService } from '@ghostfolio/client/services/user/user.service';
 import { DEFAULT_PAGE_SIZE } from '@ghostfolio/common/config';
 import {
   getDateFnsLocale,
@@ -51,15 +59,6 @@ import { NgxSkeletonLoaderModule } from 'ngx-skeleton-loader';
 import { Subject } from 'rxjs';
 import { takeUntil } from 'rxjs/operators';
 
-import { ConfirmationDialogType } from '../../core/notification/confirmation-dialog/confirmation-dialog.type';
-import { NotificationService } from '../../core/notification/notification.service';
-import { AdminService } from '../../services/admin.service';
-import { DataService } from '../../services/data.service';
-import { ImpersonationStorageService } from '../../services/impersonation-storage.service';
-import { UserService } from '../../services/user/user.service';
-import { UserDetailDialogParams } from '../user-detail-dialog/interfaces/interfaces';
-import { GfUserDetailDialogComponent } from '../user-detail-dialog/user-detail-dialog.component';
-
 @Component({
   imports: [
     CommonModule,
@@ -283,25 +282,16 @@ export class GfAdminUsersComponent implements OnDestroy, OnInit {
   }
 
   private openUserDetailDialog(aUserId: string) {
-    const userData = this.dataSource.data.find(({ id }) => {
-      return id === aUserId;
-    });
-
-    if (!userData) {
-      this.router.navigate(['.'], { relativeTo: this.route });
-      return;
-    }
-
     const dialogRef = this.dialog.open<
       GfUserDetailDialogComponent,
       UserDetailDialogParams
     >(GfUserDetailDialogComponent, {
       autoFocus: false,
       data: {
-        userData,
         deviceType: this.deviceType,
         hasPermissionForSubscription: this.hasPermissionForSubscription,
-        locale: this.user?.settings?.locale
+        locale: this.user?.settings?.locale,
+        userId: aUserId
       },
       height: this.deviceType === 'mobile' ? '98vh' : '60vh',
       width: this.deviceType === 'mobile' ? '100vw' : '50rem'
diff --git a/apps/client/src/app/components/user-detail-dialog/interfaces/interfaces.ts b/apps/client/src/app/components/user-detail-dialog/interfaces/interfaces.ts
index d29bc01bc..b922e7a54 100644
--- a/apps/client/src/app/components/user-detail-dialog/interfaces/interfaces.ts
+++ b/apps/client/src/app/components/user-detail-dialog/interfaces/interfaces.ts
@@ -1,8 +1,6 @@
-import { AdminUsersResponse } from '@ghostfolio/common/interfaces';
-
 export interface UserDetailDialogParams {
   deviceType: string;
   hasPermissionForSubscription: boolean;
   locale: string;
-  userData: AdminUsersResponse['users'][0];
+  userId: string;
 }
diff --git a/apps/client/src/app/components/user-detail-dialog/user-detail-dialog.component.ts b/apps/client/src/app/components/user-detail-dialog/user-detail-dialog.component.ts
index bd336c4f8..6dabf2f78 100644
--- a/apps/client/src/app/components/user-detail-dialog/user-detail-dialog.component.ts
+++ b/apps/client/src/app/components/user-detail-dialog/user-detail-dialog.component.ts
@@ -1,19 +1,24 @@
 import { GfDialogFooterComponent } from '@ghostfolio/client/components/dialog-footer/dialog-footer.component';
 import { GfDialogHeaderComponent } from '@ghostfolio/client/components/dialog-header/dialog-header.component';
+import { AdminService } from '@ghostfolio/client/services/admin.service';
+import { AdminUserResponse } from '@ghostfolio/common/interfaces';
 import { GfValueComponent } from '@ghostfolio/ui/value';
 
 import { CommonModule } from '@angular/common';
 import {
   ChangeDetectionStrategy,
+  ChangeDetectorRef,
   Component,
   CUSTOM_ELEMENTS_SCHEMA,
   Inject,
-  OnDestroy
+  OnDestroy,
+  OnInit
 } from '@angular/core';
 import { MatButtonModule } from '@angular/material/button';
 import { MAT_DIALOG_DATA, MatDialogRef } from '@angular/material/dialog';
 import { MatDialogModule } from '@angular/material/dialog';
-import { Subject } from 'rxjs';
+import { EMPTY, Subject } from 'rxjs';
+import { catchError, takeUntil } from 'rxjs/operators';
 
 import { UserDetailDialogParams } from './interfaces/interfaces';
 
@@ -33,14 +38,36 @@ import { UserDetailDialogParams } from './interfaces/interfaces';
   styleUrls: ['./user-detail-dialog.component.scss'],
   templateUrl: './user-detail-dialog.html'
 })
-export class GfUserDetailDialogComponent implements OnDestroy {
+export class GfUserDetailDialogComponent implements OnDestroy, OnInit {
+  public user: AdminUserResponse;
+
   private unsubscribeSubject = new Subject<void>();
 
   public constructor(
+    private adminService: AdminService,
+    private changeDetectorRef: ChangeDetectorRef,
     @Inject(MAT_DIALOG_DATA) public data: UserDetailDialogParams,
     public dialogRef: MatDialogRef<GfUserDetailDialogComponent>
   ) {}
 
+  public ngOnInit() {
+    this.adminService
+      .fetchUserById(this.data.userId)
+      .pipe(
+        takeUntil(this.unsubscribeSubject),
+        catchError(() => {
+          this.dialogRef.close();
+
+          return EMPTY;
+        })
+      )
+      .subscribe((user) => {
+        this.user = user;
+
+        this.changeDetectorRef.markForCheck();
+      });
+  }
+
   public onClose() {
     this.dialogRef.close();
   }
diff --git a/apps/client/src/app/components/user-detail-dialog/user-detail-dialog.html b/apps/client/src/app/components/user-detail-dialog/user-detail-dialog.html
index 6bc468b59..fcefee4f0 100644
--- a/apps/client/src/app/components/user-detail-dialog/user-detail-dialog.html
+++ b/apps/client/src/app/components/user-detail-dialog/user-detail-dialog.html
@@ -8,9 +8,7 @@
   <div class="container p-0">
     <div class="mb-3 row">
       <div class="col-6 mb-3">
-        <gf-value i18n size="medium" [value]="data.userData.id">
-          User ID
-        </gf-value>
+        <gf-value i18n size="medium" [value]="user?.id">User ID</gf-value>
       </div>
       <div class="col-6 mb-3">
         <gf-value
@@ -18,24 +16,21 @@
           size="medium"
           [isDate]="true"
           [locale]="data.locale"
-          [value]="data.userData.createdAt"
+          [value]="user?.createdAt"
+          >Registration Date</gf-value
         >
-          Registration Date
-        </gf-value>
       </div>
     </div>
 
     <div class="mb-3 row">
       <div class="col-6 mb-3">
-        <gf-value i18n size="medium" [value]="data.userData.role">
-          Role
-        </gf-value>
+        <gf-value i18n size="medium" [value]="user?.role">Role</gf-value>
       </div>
       @if (data.hasPermissionForSubscription) {
         <div class="col-6 mb-3">
-          <gf-value i18n size="medium" [value]="data.userData.country">
-            Country
-          </gf-value>
+          <gf-value i18n size="medium" [value]="user?.country"
+            >Country</gf-value
+          >
         </div>
       }
     </div>
@@ -46,20 +41,18 @@
           i18n
           size="medium"
           [locale]="data.locale"
-          [value]="data.userData.accountCount"
+          [value]="user?.accountCount"
+          >Accounts</gf-value
         >
-          Accounts
-        </gf-value>
       </div>
       <div class="col-6 mb-3">
         <gf-value
           i18n
           size="medium"
           [locale]="data.locale"
-          [value]="data.userData.activityCount"
+          [value]="user?.activityCount"
+          >Activities</gf-value
         >
-          Activities
-        </gf-value>
       </div>
     </div>
 
@@ -71,20 +64,18 @@
             size="medium"
             [locale]="data.locale"
             [precision]="0"
-            [value]="data.userData.engagement"
+            [value]="user?.engagement"
+            >Engagement per Day</gf-value
           >
-            Engagement per Day
-          </gf-value>
         </div>
         <div class="col-6 mb-3">
           <gf-value
             i18n
             size="medium"
             [locale]="data.locale"
-            [value]="data.userData.dailyApiRequests"
+            [value]="user?.dailyApiRequests"
+            >API Requests Today</gf-value
           >
-            API Requests Today
-          </gf-value>
         </div>
       </div>
     }
diff --git a/apps/client/src/app/services/admin.service.ts b/apps/client/src/app/services/admin.service.ts
index 2f3040ba3..cdac3ed38 100644
--- a/apps/client/src/app/services/admin.service.ts
+++ b/apps/client/src/app/services/admin.service.ts
@@ -8,11 +8,12 @@ import {
 } from '@ghostfolio/common/config';
 import { DEFAULT_PAGE_SIZE } from '@ghostfolio/common/config';
 import {
-  AssetProfileIdentifier,
   AdminData,
   AdminJobs,
   AdminMarketData,
+  AdminUserResponse,
   AdminUsersResponse,
+  AssetProfileIdentifier,
   DataProviderGhostfolioStatusResponse,
   EnhancedSymbolProfile,
   Filter
@@ -142,6 +143,10 @@ export class AdminService {
     return this.http.get<Platform[]>('/api/v1/platform');
   }
 
+  public fetchUserById(id: string) {
+    return this.http.get<AdminUserResponse>(`/api/v1/admin/user/${id}`);
+  }
+
   public fetchUsers({
     skip,
     take = DEFAULT_PAGE_SIZE