"We apologize for the inconvenience. It does appear that there was a hiccup with an Update pushed out causing Windows XP machines to lose internet connectivity. An update was just released that should address the issue, what I will need you to do is:
To get XP users’ internet connectivity (temporarily), please disable the Web AV component of your protection policy for your managed computers. After doing so;
In Security Centre (or Admin Kit):
1.) Go to the Repositories section >> (Right click) Updates >> All Tasks >> Clear updates repository.
2.) Go to the Repositories section >> (Right click) Updates >> Download Updates
After taking this step, please run your group Update task for Managed Computers. After the update has been pushed to your workstations, please re-enable your Web AV component in your protection policy. This should resolve the issue. "
But be aware people are reporting up to 3 to 4 hours to download the repository!!!