An internal error occurred during: “Updating Maven Project”. Unsupported IClasspathEntry kind=4

Question

As the title mentioned I have the following problem: I use Eclipse with Maven Nature and when I update my Maven Project, I get this error:

Answer 1

My tricky solution is:

1. Open your windows Task Manager,
2. Find the Javaw.exe process and highlight it, then End it by End Process
3. In eclipse project browser, right click it and use Maven -> Update Project again.

Issue is resolved.

If you have Tomcat Server Running in Eclipse, you need to refresh project before restart Tomcat Server.