> For the complete documentation index, see [llms.txt](https://docs.devolutions.net/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.devolutions.net/server/de/knowledge-base/troubleshooting-articles/the-specified-redirect_uri-is-not-valid-for-this-client-application.md).

# The specified 'redirect\_uri' is not valid for this client application

Der folgende Fehler wird angezeigt, wenn Sie versuchen, sich auf der Devolutions Server-Webseite anzumelden:

```
error:invalid_request
error_description:The specified 'redirect_uri' is not valid for this client application.
error_uri:https://documentation.openiddict.com/errors/ID2043
```

Beim Versuch, sich mit Microsoft Entra ID-Authentifizierung in Remote Desktop Manager anzumelden, erhalten Sie möglicherweise stattdessen die folgende Fehlermeldung:

```
Unable to login with Microsoft Entra ID. Please contact your administrator. Error: Object reference not set to an instance of an object.
```

### Lösung

{% hint style="success" %}
Beim Access URI wird zwischen Groß- und Kleinschreibung unterschieden und er muss dem Hostnamen des Zertifikats entsprechen.
{% endhint %}

Um diese Probleme zu beheben, überprüfen Sie, ob der Access URI in der Registerkarte IIS der Devolutions Server-Einstellungen korrekt festgelegt ist. Weitere Informationen finden Sie unter [Access URI](/server/de/knowledge-base/knowledge-base-articles/access-uri-format.md).

![](https://cdnweb.devolutions.net/docs/DVLSCONSOLE2014_2025_1.png)


---

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