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-Djava.endorsed.dirs=C:\Apache\apache-tomcat-9.0.37\endorsed is not supported. Endorsed standards and standalone APIs in modular form will be supported via the concept of upgradeable modules.

Mark Rotteveel
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Santiago Calvo
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    Use an older JDK for now. – Thorbjørn Ravn Andersen Aug 14 '20 at 18:33
  • Do you get this when running Tomcat itself, or do you get this when launching Tomcat from something else (eg Eclipse)? In that case, it might be a duplicate of [How to fix -Djava.endorsed.dirs not supported, that emerged after installing WTP in Eclipse?](https://stackoverflow.com/questions/49819110/how-to-fix-djava-endorsed-dirs-not-supported-that-emerged-after-installing-wtp) – Mark Rotteveel Aug 14 '20 at 19:42

2 Answers2

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I just had the same problem. To resolve it, just remove the line "-Djava.endorsed.dirs=C:..." from the Tomcat9 Properties in "Java Options" under Java Tab then restart tomcat Remove the -Djava.endorsed line

Steps to fix it follows:

-Open Tomcat9.exe from the tomcat lib folder
-From the Tomcat9 Properties screen, select the Java Tab
-Remove the line "-Djava.endorsed.dirs=..." then
-Select the General Tab and click on the Start button to Restart Tomcat
Supercoder
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Also you can go to open run configuration -> click tomcat server -> click arguments

Under Vm arguments section remover -Djava.endrosed.dirs property

maddy
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