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MartinKSA
MartinKSA
December 13, 2018
Solved

Error on quickstart AEM 6.4

  • December 13, 2018
  • 7 replies
  • 11904 views

hi,

I installed AEM 6.4 locally and have been running it fine for the past few days.
After a machine restart and trying to rerun the jar files on my Mac I get the following errors on http://localhost:4502/aem/start.html, as well as on http://localhost:4503/sites.html/content

"libs/granite/ui/components/shell/header/user/User has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0

Cannot serve request to /aem/start.html in /libs/granite/ui/components/shell/header/user/user.html"

can anyone help me with this issue?

thanks

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    Best answer by Nausheed

    You have compiled with a different JDK version and are running with a different JRE version . 

    - Create a new folder and copy the AEM's quickstart.jar file and run it. Now compilation and execution will be done via same versions . 

    Hope this helped !

    7 replies

    arunpatidar
    Community Advisor
    arunpatidarCommunity Advisor
    Community Advisor
    December 13, 2018

    Hi,

    Did you updated Java version to 9? Could you please check? AEM runs on Java 8.

    I think Version 52.0 is Java 8 and 53.0 is Java 9.

    Arun Patidar
      MartinKSA
      MartinKSAAuthor
      December 13, 2018

      Thanks for the reply. It appears as if i'm still on Java 8 (see image below).

      Thanks

        narindera257447
        narindera257447
        November 13, 2019

        I am also facing the same issue when i try to run AEM in debug mode using the below parameters:

        java -XX:MaxPermSize=256m -Xmx1024M -agentlib:jdwp=transport=dt_socket,address=8000,server=y,suspend=n -jar aem-6.5-p4502.jar.jar

        Note: While running in normal mode , we dont see any such issues.

          R
          RishabhKr
          February 11, 2020

          Hi MartinKSA,

           

          I faced the same problem. Here is what I did:

          Started AEM instance with JDK11

          Changed the JAVA_HOME to JDK8

          After this the same error popped up. So I changed the JAVA_HOME back to JDK11 and it worked.

           

          Take a look whether have you done the same thing.

           

          Thanks 

            manuel_óscars89
            manuel_óscars89
            April 14, 2020

            I was experiencing this same problem when trying to use the debugger mode of AEM. To fix it I executed the following commands:

             

            cd <DIRECTORY_IN_WHICH_YOU_HAVE_YOUR_QUICKSTAR.JAR>

            "<DIRECTORY_IN_WHICH_YOU_HAVE_YOUR_DESIRED_JRE>\bin\java" -jar <DIRECTORY_IN_WHICH_YOU_HAVE_YOUR_QUICKSTAR.JAR>\AEM_6.5_Quickstart.jar -debug <PORT>

              N
              NausheedAccepted solution
              September 11, 2020

              You have compiled with a different JDK version and are running with a different JRE version . 

              - Create a new folder and copy the AEM's quickstart.jar file and run it. Now compilation and execution will be done via same versions . 

              Hope this helped !

                VeenaVikraman
                Community Advisor
                VeenaVikramanCommunity Advisor
                Community Advisor
                July 16, 2021

                For anyone looking for a solution ,

                 

                Problem (Root Cause) :- the below error means that you ran the jar first with a higher version of Java and now you are running it with a lower version. 

                Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0

                In my case I ran the jar first with Java 11 , but my cmd picked Java 8 nowadays and I ended up with this exact error . 

                 

                Solution :- 

                1. Stop your AEM Jar 
                2. Remove your lower Java version and upgrade the Java Version to the latest one
                3. Re-run the jar and refresh the page
                4. Ta-da

                 

                Hope this works 

                Veena ✌

                  W
                  Adobe Employee
                  workflowuserAdobe Employee
                  Adobe Employee
                  March 20, 2024

                  I had the same problem. When I start my AEM as a Windows service, I was getting the above-mentioned error. . I had the change the Jvm entry in the registry for the key Computer\HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Apache Software Foundation\Procrun 2.0\aem6520\Parameters\Java

                   

                  aem6520 is the name of my windows service

                   

                   

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