problem installing extensions

[mcbenly]

Hi,
I am trying to install extensions, but can’t seem to install them…
Getting these errors:
Some sites could not be found. See the error log for more detail.
Unable to read repository at http://update.knime.com/community-contributions/4.0/content.xml.
Address family not supported by protocol family: connect
Unable to read repository at http://update.knime.com/community-contributions/trusted/4.0/content.xml.
Address family not supported by protocol family: connect
Unable to read repository at http://update.knime.com/analytics-platform/4.0/content.xml.
Address family not supported by protocol family: connect
Unable to read repository at http://update.knime.com/partner/4.0/content.xml.
Address family not supported by protocol family: connect

Here is prefernce setting:

I have also tried re-installing knime couple of times, but still won’t work.

Any idea ?

Thanks,

[HansS]

Hi @mcbenly

See this post unable to install extensions with the same problem and some ideas to fix it.
gr. Hans

[mcbenly]

Hi @HansS

Checked that linked it didn’t help… But this command in Windows using cmd, by just typing worked:
setx _JAVA_OPTIONS -Djava.net.preferIPv4Stack=true

Thanks,