# JAR resources in JNLP file are not signed by same certificat

**URL:** <https://forum.servoy.com/t/jar-resources-in-jnlp-file-are-not-signed-by-same-certificat/18781>\
**Category:** Classic Servoy\
**Created:** [March 17, 2016, 3:04pm UTC](https://forum.servoy.com/t/jar-resources-in-jnlp-file-are-not-signed-by-same-certificat/18781 "2016-03-17T15:04:25Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![t-rob](https://avatars.discourse-cdn.com/v4/letter/t/7993a0/32.png) [@t-rob](https://forum.servoy.com/u/t-rob)\
**Post date:** [March 17, 2016, 3:04pm UTC](https://forum.servoy.com/t/jar-resources-in-jnlp-file-are-not-signed-by-same-certificat/18781/1 "2016-03-17T15:04:25Z")

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On our Servoy server, I’ve upgraded the plugin files for JasperReports that includes ‘jasperreports-4.6.0.jar’ with the plugin files that include ‘jasperreports-5.6.0’.

When trying to launch client, I’m receiving the error “JAR resources in JNLP file are not signed by same certificate”. I have re-signed everything in the application\_server folder.

I’m running Servoy 7.4.1 on the server.

Screenshot of the error window with additional info attached.

Todd

[attachment=0]JasperReports JAR Error.png[/attachment]

 ![JasperReports JAR Error.png](https://canada1.discourse-cdn.com/flex010/uploads/servoy/original/2X/8/8681735d3f7b05c5f4a1fab789a999fdd4d51e92.png)

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**Author:** ![t-rob](https://avatars.discourse-cdn.com/v4/letter/t/7993a0/32.png) [@t-rob](https://forum.servoy.com/u/t-rob)\
**Post date:** [March 31, 2016, 2:45pm UTC](https://forum.servoy.com/t/jar-resources-in-jnlp-file-are-not-signed-by-same-certificat/18781/2 "2016-03-31T14:45:06Z")

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Anyone else have this issue and know how to resolve it?

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**Author:** ![lwjwillemsen](https://yyz2.discourse-cdn.com/flex010/user_avatar/forum.servoy.com/lwjwillemsen/32/4987_2.png) [@lwjwillemsen](https://forum.servoy.com/u/lwjwillemsen)\
**Post date:** [March 31, 2016, 4:18pm UTC](https://forum.servoy.com/t/jar-resources-in-jnlp-file-are-not-signed-by-same-certificat/18781/3 "2016-03-31T16:18:57Z")

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Did you shut down the application server before signing ?

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**Author:** ![t-rob](https://avatars.discourse-cdn.com/v4/letter/t/7993a0/32.png) [@t-rob](https://forum.servoy.com/u/t-rob)\
**Post date:** [April 3, 2016, 1:31pm UTC](https://forum.servoy.com/t/jar-resources-in-jnlp-file-are-not-signed-by-same-certificat/18781/4 "2016-04-03T13:31:01Z")

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Yes, I did shutdown the application server before signing.

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**Author:** ![Harjo](https://yyz2.discourse-cdn.com/flex010/user_avatar/forum.servoy.com/harjo/32/4873_2.png) [@Harjo](https://forum.servoy.com/u/Harjo)\
**Post date:** [April 4, 2016, 7:24am UTC](https://forum.servoy.com/t/jar-resources-in-jnlp-file-are-not-signed-by-same-certificat/18781/5 "2016-04-04T07:24:34Z")

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Mostly of the time, if you get this warning, it’s true, so somehow, you still have jars that are nog signed right!

Try to resign everything, clear your java cache, and try again!