There may be an issue with the update. Please reply with your Vista edition
information (x86 or x64, version, build, and the kb article number or
definition number for the update). Research is underway on this issue.
I am experiencing it on XP Pro x64. It is definitions update 1.14.1922.8.
It appears that Windows Defender x64 is up to date with 1.14.1922.7 and that
the .8 update shouldn't be targeted for x64.
I have tried the Windows Installer Cleanup Utility, removal and
reinstallation of WD, system restore, reseting the defitions file back to
1.0.0.0 and updating again but those steps do not resolve the issue.
I doubt that a fix on the client end is possible. I suspect that the fix is
serverside and MS will have to find and fix the problem on their end.
I am participating in a troubleshooting thread at
http://www.microsoft.com/athome/sec...afab&mid=a5498a73-8a15-4ff9-9a03-1e11eb229528
You may join if you wish.