Try running this from a DOS prompt and then reboot the PC/Laptop: "netsh winsock reset catalog " Works 99% of the time for me in work when...
Or, try down loading the fix from here: http://tinyurl.com/53ksz
Try typing the following in a DOS window: 'netsh winsock reset catalog', then hit enter, then reboot the PC. 9 times out of 10 it works for me.
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