Microsoft Defender error message

[Guest]

I had downloaded the latest beta version of
Windows Defender, and ran a full scan successfully.
On my latest scan, when checking the following objetc:
HKLM\Software\Microsoft\Windows NT\Current
version\Winlogon\Notify\msupdate I am getting the following error
message:
"Windows Defender encountered an error: 0x8050800c. An unexpetced
problem occurred. Install any available updates and then try to start
the proram again (To check for updates, check Start, click Programs, and
then click Windows Update)."
I have repeatedly uninstalled Windows Defender and reinstalled it, but I
still keep getting the same error message|

 

[Guest]

Folow the steps:
http://support.microsoft.com/kb/918355

 

[Bill Sanderson MVP]

Can you please check the top version number, in Help, about? This should be
1.1.1347.0. If yours is a lower number, please do a new download and run
the downloaded file to update.

Otherwise, can you say more about your machine? Are you running full disk
encryption software? Have you run a scandisk recently?