See this KB article which has many suggestions & tips:
How to troubleshoot definition update issues for Windows Defender:
http://support.microsoft.com/kb/918355
Microsoft has established separate newsgroups for Windows Defender support
and comments. This is not one of them. See
http://www.microsoft.com/athome/secu...s/default.mspx
--
~Robear Dyer (PA Bear)
MS MVP-Windows (IE, OE, Security, Shell/User)
AumHa VSOP & Admin; DTS-L.org
julio27 wrote:
> i try to update the definition kb915597 in windows update, buat alway say
> error, try to install again and then say error 0xC0000018 code, for that
> problen my windows defender dont update how i can fix this problem?