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https://issues.apache.org/jira/browse/NETBEANS-3810?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17036129#comment-17036129
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Michele Costabile commented on NETBEANS-3810:
---------------------------------------------

Update: I tried removing existing projects and creating a new project. I am 
still stuck in the same point, but I have more feedback from NB and it appears 
that it cannot connect to the plugin repository because certificate 
verification fails.

In fact, I was using a machine behind a company proxy with deep inspection and 
certificate rewriting. any connection could not work without importing the 
relevant certificates inside cacerts.

After fixing certificates, I can use NB 11.3 as I was using NB 11.2.

I think that security of the connection to the plugin site has been tightened 
in plugin download in 11.3. Perhaps

1) certificate problems should be reported to the user, so that one can fix the 
trust chain adding the corporate CA to the trusted roots

2) missing JavaFX and nb-javac should not be a blocker for project importing or 
creation

3) if they are, they should be bundled with NB. Developers are not lawyers, or 
it should be stated "some assemply required"and clearer instructions.

> Netbeans 11.3 beta2 startup infinite loop downloading javafx and nb-javac
> -------------------------------------------------------------------------
>
>                 Key: NETBEANS-3810
>                 URL: https://issues.apache.org/jira/browse/NETBEANS-3810
>             Project: NetBeans
>          Issue Type: Bug
>          Components: platform - Autoupdate
>    Affects Versions: 11.3
>         Environment: Windows 2016 server, Intel Xeon, 48G RAM.
> Network includes a proxy server with deep packet inspection and certificate 
> rewriting.
>            Reporter: Michele Costabile
>            Priority: Blocker
>              Labels: newbie
>             Fix For: 11.3
>
>         Attachments: Netbeans-11.3_bug.PNG, Netbeans-11.3_plugin-problem.PNG, 
> Netbeans-11.3_plugin.PNG
>
>
> NetBeans cannot get past installation of JavaFX and nb-javac on my 
> installation behind a company firewall. This problem was also in 11.2, but it 
> did not stop the IDE from working. It just kept on quietly asking for 
> nb-javac installation.
> 11.3, on the other hand does not seem to get past this problem. It keeps on 
> asking for installation of javafx and nb-javac and "Loading projects" never 
> comes to an end.
> I tested my proxy setting in options and I have a green light with system 
> settings and also with manual settings.
>  In any case I have never been able to install nb-javac and could not find 
> instructions on how to install manually the plugin.
> Note that my proxy has deep packet inspection and can create problems with 
> certificate verification on SSL.
>  
> EDIT: the request for installation is not an infinite loop. It appears to be 
> once for every open project. Hitting cancel more times, the progress bar in 
> the status bar eventually gets to 100%, but all the projects are reported 
> broken.
>  
>  
>  



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