After an automatic up date today I have no anti virus protection. The security centre says that it can not be found. What can I do to rectify this problem.
Are you running Windows Live OneCare? Did it update to v 2.0? What is its status in the System Tray? Ignore the Windows Security Center for a moment.
If you are running OneCare and *it* reports that your antivirus is off, see this post: http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=2667445&SiteID=2
-steve
how do I get my anti-virus protection back
Try the following:
Virus and Spyware repair tool - http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=2667445&SiteID=2
If that does not resolve it, please contact support.
How to reach support (FAQ) - http://forums.microsoft.com/WindowsOneCare/ShowPost.aspx?PostID=2421771&SiteID=2