error 0x8007042d windows Defender

What is the problem with my windows defender? I have an error message when I turn it on. The error message is windows Defender encountered an error 0x8007042d. service did not start due to a logon failure. my laptop with windows vista Home premium.

MSE and Windows Defender

Windows Defender cannot be used with Norton, AVG and McAfee, MSE.  There are also reports of conflicts with Windows Defender of the Support Forums of Avira, Kaspersky and Trend Micro.

Maybe it's been disabled by your antivirus program?

Tags: Windows

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