View Full Version : Windows 8 Defender won't update - 80070666 error
04-09-2012, 06:43 PM
I am running Windows 8 Customer Preview 32 bit but Windows Defender won't update and get 80070666 error. I've searched this problem for a long time and many people have the same problem, still no lucky. Just installed some system utilities on this Win 8 CP, I am not sure if this is related. You guys here must know how to fix it with professional computer knowledge. many thanks in advance.
04-09-2012, 06:57 PM
I'm running the 64 bit version I didn't get an error but it rarely seemed to update for me. I installed Avast free.
04-10-2012, 02:17 AM
See if this answer from MS helps (http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_update/windowsupdate-80070666-error-in-microsoft-update/8bac407d-9026-41c3-9c5d-858b36407570?tab=MoreHelp). If not you might have to reinstall.
Joe, I get sig updates every day.
04-10-2012, 07:15 AM
I might have been impatient but it seems like when a new one is released you should get a notification right away.
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