Over the last few days, several users have reported problems with saved searches. Existing *.oss files no longer work and they cannot save new ones, as the Save and Save as menu items are grayed out.
This is caused by a security update, MS07-003
(//www.microsoft.com/technet/security/bulletin/ms07-003.mspx) that was released Jan 9 2007.
For more information and the fix, see
Published January 15, 2007. Last updated on July 18, 2014.