I have had Win 7 and shared networking working fine until today. All of a sudden while using Win 7 it says no internet access. I tried restarting with no luck. I had to change to bridge mode to get Win 7 to recognize it had internet. Why is shared not working? Parallels desktop and tools are both up to date. As I said this happened in the middle of using Win 7 all of a sudden.
I just had the same issue and just reinstalled Parallels Tools. All is well now with the Shared Network.
Hello Please make sure that you are running the latest update of the Parallels Desktop (see http://forum.parallels.com/showthread.php?t=112231 ) and if this doesn't help: click Start -> Run and execute cmd.exe. Maximize the window. Type in the appeared window command "ipconfig /all". Then, without closing the window, click Parallels Destkop menu "Help"->"Report a Problem", send a problem report (it is not necessary to provide description) and post here the report ID.