How to fix -Djava.endorsed.dirs not supported, that emerged after installing WTP in Eclipse?

Question

I used tomcat for projects before, but this problem came after installing the WTP, and occurs when I try to run the application on server.

First comes a message, could not create Java Virtual Machine, then in the console occures this one:

-Djava.endorsed.dirs=C:\Program Files\Apache Software Foundation\Tomcat 9.0\endorsed is not supported. Endorsed standards and standalone APIs
in modular form will be supported via the concept of upgradeable modules.

Answer 1

I've got the same error in Eclipse running Tomcat 9 on JDK 13. I just removed the -Djava.endorsed.dirs=C:\.... from the VM arguments then restart Tomcat again.

Click on the Open Launch Configuration link from the Overview window

Then remove the -Djava.endorsed line

Answer 2

To fix this bug, you need to install/update the Eclipse Web Tools Platform (WTP) to version 3.9.4 or later.

• Select "Help > Install new Software..."
• Select or add following URL: http://download.eclipse.org/webtools/repository/oxygen
• Check Web Tools Platform (WTP) 3.9.4
• Select "Next" and follow instructions

(Bug was reported to Eclipse here: https://bugs.eclipse.org/bugs/show_bug.cgi?id=533162)