I'm unable to get the Central Maven repo index. I'm running Netbeans 7.0.1 and have tried rebooting my PC, rebooting Netbeans 4 times and alternate mirrors. It sits at 0% and never goes anywhere and never throws an error. I'm unsure what to try or what to investigate to try to determine the problem.
5 Answers
How to Stop Netbeans: Transferring repository index
I see at status bar, that Netbeans is Transferring repository index : java.net repository. It slows down my computer very much. Very annoying.
Solution for Netbeans 7.4 (and possibly later versions, 8.0):
Tools | Options | Java | Maven | Index”, find “Index Update Frequency” and then adjust how often it should be updated (Never :).
From Netbeans Settings Options->Java->Maven you can set the indexing to never. How exactly that relates to 'Completely disable' I'm not sure.

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Try to move the local-Repository-path to another place, in the file: conf/settings.xml
<localRepository>D:/mvn_repo</localRepository>
Also check maven's configuration.
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I don't see this setting inside of settings.xml – Ben Mar 26 '12 at 15:44
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1So add this node to your settings.xml – Ilya Mar 26 '12 at 15:46
Had the same problem myself, it turned out to be the proxy settings (Tools/Options/Proxy settings).

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Add -J-Djava.io.tmpdir=T:/Temp
to the end of the netbeans_default_options
property in NetBeans/etc/netbeans.conf
configuration file, assuming that T:\
has a lot more space than C:\
.

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