Office 2010 with MOSS 2007

In case upgrade to Office 2010 and still working with MOSS 2007, you face this problem, that I have just faced, all clients PCs can't open or save Office 2010 docuemnts to the portal, in my case the following step was the solution:

1. Open up Internet Explorer
2. Click Tools –> Internet Options
3. Click the Connections tab
4. Click LAN settings
5. Check “Use a proxy server for your LAN enter the IP address
6. Click Advanced
7. In the Exceptions type: *.*
8. Click OK, OK and OK