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Windows Defender Solution Center

Top issues

"Check for new definitions" warning after you install Windows Defender
Error message when you run a beta version of Windows Defender: "Application failed to initialize: 0x800106ba"
Windows Defender and Windows AntiSpyware (Beta) do not run correctly when you install Windows Defender on a computer where Windows AntiSpyware (Beta) is already installed
Incorrect message when you try to remove Windows Defender from your computer: "The following applications should be closed before continuing the install"

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Last Review : January 2, 2009

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