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Microsoft adds Vista support in OneCare

The software maker is testing an update to its antivirus program that works with the new operating system and also is allowing folks outside the U.S. to try the service.

Microsoft on Monday released a test version of an update to its OneCare antivirus product. The beta of Version 1.5 of Windows Live OneCare expands the service beyond the United States to 16 additional markets and also adds support for Windows Vista.

The new software, which is available from Microsoft's Web site, also adds new back-up options and updated antivirus and anti-spyware definitions. Microsoft released the first version of OneCare in May, and has managed to grab a significant share of the retail market.