I have been having hard time upgrading to windows live essential 2012 on windows 7 pc. I have windows live 2011 installed and now I have done so many options that were told on the net, uninstalling, installing, repairing message store and so on, but so far has been unsuccessful. I get the following message, when I try to install the software.

Installation error 0x80070643

I have mcafee internet protection installed on my pc. I have tried installing after uninstallation of mcafee as well, but did not work.

Now my only option is to use other email client Mozilla thunderbolt.

I am technical and do any registry stuff and so on.

I will appreciate if somebody can help me to get this installed as it seems to funny that software from MS will have such a big issue with a MS os windows 7.

After installation and I get the above and if I open mail, then I am able to receive message, but can not reply or compose a new one.

Thanks.