MS has publically stated that they are phasing out Onecare. they also stated it would not work with the new OS.    Get used to not having it and plan on purchasing another similar program if you want to use Windows 7.

Windows OneCare is not compatible with Windows 7. Because a new Anti-Malware will come from Microsoft which is for Free it called "Morro" and its beta will avalable soon. If you want to use Windows OneCare then you need to have supported Opertaing System (Windows XP SP2 or Windows Vista ). However if you want to continue with Windows 7 you could use beta version of Kasperky or Norton 360 v3 beta for free till 90 days but a long as they are beta after 90 days you can use another 90 days as free trial, they will not count as trial usage. You can use Kaspersky or Norton until beta version of Morro release.

I hope this help you.

According to this blog post, OneCare can be made to run on Windows 7:

http://beaugiles.net/2009/01/how-to-install-and-use-onecare-on-windows-7at-your-own-risk/

Bit tricky to get it to work, but looks promising...

Although Microsoft recommends Kasperky and Norton 360, I tried AVG Free 8.0.233 in my Windows 7 Build 7000 and it is working fine. I'll be using this Anti virus until Morro becomes a reality. I also canceled my subscription to OneCare.

I have tried Kasperky, Norton, AVG and a few others to no great success. Each has its own issues with Windows 7 - some with BSOD and others with Windows Error Reporting system. I have uninstalled and cleaned my system from all of them. While the work around is a bit tricky to make work, and it will place an anit-virus program in compatability mode (which is not recommened) it does appear to be the most promising.

While other disparage OneCare, it has done a terrrific job on all my systems, and has allowed me to monitor the entire family from a single console.

I tried the 'work around' and successfully installed, but the "Windows Live OneCare" service nor the AV service would start.

FROM WHAT I SEE WINDOWS 7 CAME OUT THE GATE TO FAST LIKE IT'S BIG BRO VISTA & HARDWARE MANFACT WAS KNOT PREPT FOR IT NOR WAS THE SOFTWARE COMPS AS FOR ONECARE IF THER SHUTING DOWN CHANCE'S OF IT WORKING ON WIN7 IS KNOT LIKELY

I REC THAT EVERYONE WAIT FOR AVG9 & I FEEL THE WAIT WONT BE VERY LONG FOR AVG9

ONECARE generated backups are UNRECOGNIZABLE and unaccessable from Windows 7!!!!
User MUST retrieve all backups created by OneCare and transfer to external media BEFORE deleting XP or Vista!!! Seems to me that Microsoft ought to mention that to OneCare subscribers before Windows 7 launch October 22, 2009.
p.s. Kaspersky works great in Windows 7.
p.p.s. Microsoft will issue refund on remainder of OneCare subscription.

Possible workaround here (haven't tested it yet):
http://beaugiles.net/2009/01/how-to-install-and-use-onecare-on-windows-7at-your-own-risk/

TERMANAT ONECARE OFF THE WIN 7 UNLESS A FIX IS MADE

The features available in OneCare are already included in Windows Vista as well as se7en. We can only wait on the "Lite" version aka "Morro", as this will handle Anti-Virus/Spyware. AVG Free does not have any "Realtime" protection. Try one of the other programs until the version is released sometime this spring.

Deactivated on purpose.

OneCare will not be supported on Windows 7 due to a new line of develpment of a free antivirus software called "Microsoft Security Essentials". However, you can still purchase OneCare subscriptions via the Microsoft website, considering you will use older versions of Windows like Vista, or XP.

All in all, Windows 7 DOES NOT and WILL NOT support OneCare.

Possible workaround here (haven't tested it yet):
http://beaugiles.net/2009/01/how-to-install-and-use-onecare-on-windows-7at-your-own-risk/

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