> 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/cryptographicexception-bad-data.md).

# CryptographicException - Bad Data

Der Fehler `CryptographicException - Bad Data` in Devolutions Server wird durch einen ungültigen Sitzungsschlüssel verursacht. Um diese Fehlermeldung zu beheben, leeren Sie bitte den lokalen Speicher des Browsers.

Die folgenden Anweisungen beschreiben die Schritte, die im Google Chrome-Browser durchzuführen sind.

1. Öffnen Sie eine Google Chrome-Browserseite.
2. Öffnen Sie die Google Chrome-Konsole durch Drücken der F12-Taste.

   <figure><img src="https://cdnweb.devolutions.net/docs/docs_en_kb_KB4759.png" alt=""><figcaption></figcaption></figure>
3. Wählen Sie ***Application*** im oberen Menü der Konsole aus.

   <figure><img src="https://cdnweb.devolutions.net/docs/docs_en_kb_KB4760.png" alt=""><figcaption></figcaption></figure>
4. Wählen Sie ***Local Storage*** im linken Menü der Konsole aus.

   <figure><img src="https://cdnweb.devolutions.net/docs/docs_en_kb_KB4761.png" alt=""><figcaption></figcaption></figure>
5. Klicken Sie mit der rechten Maustaste auf Ihre Website(s) und klicken Sie auf ***Clear***, um den lokalen Speicher zu löschen.

   <figure><img src="https://cdnweb.devolutions.net/docs/docs_en_kb_KB4762.png" alt=""><figcaption></figcaption></figure>


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