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Thread: Error "no main manifest attribute" when install a JAR file

  1. #1
    Junior Member
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    Oct 2023
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    Default Error "no main manifest attribute" when install a JAR file

    Hi, I'm new for java and ubuntu so hope anyone here can help me for this.

    I have try to install a JAR flle which i have downloaded from below link to my Ubuntu, the file name call "DuoUniversalKeycloakAuthenticator-1.0.7_22.0.1wd.jar"

    link - github.com/instipod/DuoUniversalKeycloakAuthenticator/releases/tag/1.0.7

    but when i try install with commend "java -jar DuoUniversalKeycloakAuthenticator-1.0.7_22.0.1wd.jar" it prompt me an error "no main manifest attribute, in DuoUniversalKeycloakAuthenticator-1.0.7_22.0.1wd.jar"

    when i try edit/modified the JAR and upload again from my computer, it become invalid file. So i think the way i do is not correct. (i have no idea already)

    *sorry because i cant upload any documents cause new register
    Last edited by Kaneda82; October 14th, 2023 at 04:48 AM.

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