The Software Update Server (192.168.0.6) is not responding.

Lucas

At some point in the recent past your mac must have been configured to access a local SoftWare Update Service being provided by a Mac Server on your local network. Generally this is applied via a Managed Preference but not always. If you don't log in with a Network Based Account and you're not in an LDAP environment then odds are a network or systems administrator either issued a terminal command to 'point' your mac to the local SUS or used something like Software Update Enabler:

http://www.allocinit.net/apps/suenabler/

The property list that gets amended is stored in /Library/Preferences. To revert back simply launch Terminal on your mac - you'll find it in /Applications/Utilities - and issue this command:

sudo defaults delete com.apple.SoftwareUpdate Catalog URL

Supply your password when prompted. Don't worry if you don't see the password being typed. This is normal as there's no echo in Terminal. Restart your Mac and try again.

Tony

Hello Lucas Ruiz Diaz - Welcome to Apple discussions:

If you're comfortable with the terminal, you might try this command to see if the issue/response is the same:

softwareupdate -l

As a temporary work-a-round you could install the updates manually from apples support site.

192.168 is a local network address. SU cannot connect to that address. Go to Users/YourAccount/Library/Preferences and find the file named com.apple.SoftwareUpdate.plist. Move it to the trash and restart your computer. Then try to run SU again.

While it is worth a shot, I'm not sure there is anything in that plist that would cause Software Update to look for the server on the local network. It might be useful to check all network settings for something that could be causing this, like a proxy server setting or NAT in a router/access point.