Failed to load and initialize the Java applet

[marcelobueno]

Dear,

when trying to connect to the Checkpoint Client, I get the following message: "Failed to load and initialize the Java applet"

I'm on Ubuntu 21.04 and the versions of Java that are running on my machine are (java -version):
openjdk version "17-ea" 2021-09-14
OpenJDK Runtime Environment (build 17-ea+19-Ubuntu-1ubuntu1)
OpenJDK 64-Bit Server VM (build 17-ea+19-Ubuntu-1ubuntu1, mixed mode, sharing)

What do you think is missing?

Sincerely

[PhoneBoy]

The requirements are listed here: https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solut...
Note that versions of Ubuntu the ones listed are not formally supported. 

[marcelobueno]

@PhoneBoy , thank you very much for the tip! Although simple, I had not been aware of the necessary requirements for use. I returned the Ubuntu version to 18.04.5, and now it worked perfectly!