> For the complete documentation index, see [llms.txt](https://docs.swingsoftware.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.swingsoftware.com/seascape-for-notes/troubleshooting/error-messages/error-exceptionconverter-java.security.nosuchalgorithmexception.md).

# ExceptionConverter: java.security.NoSuchAlgorithmException

## **Description**

When converting a document, the conversion fails and this error appears in the SWING Seascape dialog or in the Java Debug Console:

```java
AGENT ERROR: ExceptionConverter: java.security.NoSuchAlgorithmException: class com.ibm.crypto.provider.MD5 configured for MessageDigest(provider: IBMJCE version 1.2) cannot be accessed.
class "com.ibm.crypto.provider.MD5"'s signer information does not match signer information of other classes in the same package 
        at java.security.Security.createAlgInstance(Security.java:1338) 
        at java.security.Security.createAlgInstance(Security.java:1232) 
        at java.security.Security.getImpl(Security.java:1123) 
        at java.security.MessageDigest.getInstance(MessageDigest.java:135) 
```

## **Solution**

This problem happens if there is a leftover JAR file named **ibmjcaprovider.jar** in your Notes Java virtual machine folder. It is usually left when upgrading to a higher version of Notes where this JAR has been replaced by a new JAR named **ibmjceprovider.jar**.

To resolve this, all you need to do is to delete the **ibmjcaprovider.jar** file (usually in the **Lotus\Domino\ibm-jre\jre\lib\ext\ibmjcaprovider.jar** folder).


---

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