Re: Can not start NB 24/25

Java 24 has the security manager permanently disabled. Netbeans 25 has
adapted it's default setting accordingly, so it can deal with this change
in java without issue.
For netbeans 24+java 24 you need to change a setting in the netbeans
configuration.
For java 24 development I would stick to netbeans 25.


met vriendelijke groet
Pieter van den Hombergh

Op ma 24 mrt 2025, 06:45 schreef slipbits <[email protected]>:

> Win10
>
> I just built a new computer and installed NB 25 and then NB 24. The
> installation files were downloaded from Netbeans.org.
>
> I attempted to start NB with the desktop Icon and then by direct execution
> of netbeans.exe and netbeans64.exe.  This is the only time this has
> happened. it has worked on all my other computers through the years. Is
> there some hardware issue involved? My chip is an AMD 7950X and my system
> is on a 4TB M.2 2280 SSD.
>
> The following error messages were seen when I attempted to start NB from a
> cygwin shell. I do notice some missing libraries. I assume that the
> security error is the one causing the failure ( and I thought that this was
> deprecated?).
>
> > ./NetBeans-24/netbeans/bin/netbeans.exe
> WARNING: package com.apple.eio not in java.desktop
> WARNING: package com.apple.laf not in java.desktop
> WARNING: package sun.awt.X11 not in java.desktop
> WARNING: package com.sun.java.swing.plaf.gtk not in java.desktop
> Error occurred during initialization of VM
> java.lang.Error: A command line option has attempted to allow or enable
> the Security Manager. Enabling a Security Manager is not supported.
>         at java.lang.System.initPhase3(java.base@24/System.java:1947)
>
> > ./NetBeans-24/netbeans/bin/netbeans64.exe
> WARNING: package com.apple.eio not in java.desktop
> WARNING: package com.apple.laf not in java.desktop
> WARNING: package sun.awt.X11 not in java.desktop
> WARNING: package com.sun.java.swing.plaf.gtk not in java.desktop
> Error occurred during initialization of VM
> java.lang.Error: A command line option has attempted to allow or enable
> the Security Manager. Enabling a Security Manager is not supported.
>         at java.lang.System.initPhase3(java.base@24/System.java:1947)
>
>