MSFeedSync.exe is Microsoft Feeds Synchronization task executable used by the Windows Internet Explorer 7 and 8 web browser to periodically update in-browser RSS feeds which have automatic RSS Feeds synchronization turned ON.
Disable RSS feed
a. Open Internet Explorer (IE).
b. Navigate to Tools > Internet Options.
c. Switch to Content tab.
d. From the Feeds section click Settings.
e. Then uncheck the option “Automatically check feeds for updates”.
f. Exit IE and reboot your server.