Windows Vista vista and windows live onecare

It seems like you are facing an issue reinstalling Windows Live OneCare beta v2.0 on your 64-bit operating system, specifically on Vista Ultimate. Windows Live OneCare is no longer available and has been discontinued by Microsoft. It was replaced by Microsoft Security Essentials, which has also reached its end of life and is no longer supported. Given that it's an older version of a software that is no longer actively maintained or supported, compatibility with newer operating systems like 64-bit versions of Vista Ultimate might be a problem. Here are a few suggestions you can try: 1. Compatibility Mode: You can try installing Windows Live OneCare beta v2.0 in compatibility mode. Right-click on the installation file, go to Properties, and under the Compatibility tab, select an earlier version of Windows (like Windows XP) to run the installer. 2. Run as Administrator: Ensure you are running the installation as an administrator. Right-click on the installer and choose "Run as administrator" to give the installation process the necessary permissions. 3. Use Alternatives: Since Windows Live OneCare is no longer available, consider using alternative antivirus and security software that is compatible with your system, such as Windows Defender for Windows Vista. If these steps do not resolve your issue, you may need to consider moving to a more recent and supported antivirus solution that is compatible with your system.