Reuters reports that Microsoft is getting ready to unveil a free antivirus service for computers to compete with the many retail antivirus offerings on the market. Microsoft first made plans for its free antivirus offering codenamed “Morro” in November of 2008. At the time, Microsoft said that the service would be launching in the second half of 2009. The exact launch date of the new free anti-virus service has yet to be announced, but Reuters reports that Microsoft will “soon” make a beta version of the free protection available for users. Investors in security software firms like McAfee and Symantec are worried that a free offering from Microsoft could potentially harm revenue for the companies.