Microsoft Says Vista SP1 Blocks Third Party Apps

Microsoft has confirmed that some third party applications are either blocked or lose functionality on machines that have Vista service pack 1 installed, including products from Trend Micro, Zonelabs, BitDefender, and Novell.

In a Knowledge Base article published Wednesday, Microsoft said some applications “may experience a loss of functionality after you install Windows Vista SP1.”

In the article, Microsoft notes that Trend Micro Internet Security 2008, Zone Alarm Security Suite 7.1, and BitDefender’s AV and Internet Security products from starting on machines that have Vista SP1 installed. “For reliability reasons, Microsoft blocks these programs from starting after you install Windows Vista SP1,” according to the article, which notes this step was taken with the consent of the affected vendors.

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