You may receive error message 1263 when you try to install Windows Live OneCare (910652)

WORKAROUND

1. Locate the following folder:

   C:\Program Files\Microsoft Windows OneCare Live

   Note In most scenarios, the Windows operating system files are installed on the "C:\" drive. If you installed Windows to some other location, the driver letter may vary.
2. Right-click the Microsoft Windows OneCare Live folder, and then click Delete.
3. Click Yes to confirm the deletion.
   
   Note If you cannot delete the Windows OneCare Live folder, you may not have the appropriate permissions to do this. To grant yourself the appropriate permissions and to delete the WindowsOneCare Live folder, follow these steps:
   1. Click Start, click Run, type cmd, and then click OK.
   2. At the command prompt, type the following commands, and then press ENTER after each command:
      
      CD\
      CD Program Files
      cacls "Microsoft Windows OneCare Live" /t /g administrators:f
   3. When you are prompted for confirmation, press Y to answer Yes, and then press ENTER.
   4. Repeat steps 1 and 2 to locate and delete the Windows OneCare Live folder.
4. Reinstall Windows Live OneCare .