Note: The service partner system has changed. Logins from the previous website are no longer valid. Please register again using your email address.
Use the service portal on mobile
Use the service portal like an app
You can save the Kerstner service partner portal to your smartphone like an app. This gives you faster access to tickets, replies, attachments and downloads without installing a separate app from an app store.
- iPhone / iPad: open this page in Safari, tap the share icon, then choose “Add to Home Screen”.
- Android: open this page in Chrome, tap the menu, then choose “Install app” or “Add to Home screen”.
On a PC or Mac, you can continue to use the portal as usual in your browser.
Service partner login
Log in
For approved service partners: log in to open service cases and protected documents.
New registration
Request access
Please complete all fields. Only the mobile number is optional. Kerstner Service will verify the assignment and approve the access.