Hello, I am planning to deploy office 365 business premium on 30 systems that are running on Windows 7 and already have Office 2007 on it. If i downloaded office 365, will it overwrite outlook 2007 with outlook 2013. Or do i have to manually uninstall Office 2007 before installing Office 365. I am planning to do cut over migration and make the exchange 2003 server redundant.

Hi,

If you deploy Office 365 to users, then the new Office and Office 2007 will coexist on the client.

One thing to note, as you already have Office 2007, which is 32 bit, make sure the new Office 2013 is also 32 bit.

Anyway, if the new Office has included all the applications(Word, Excel, Outlook, etc) in Office 2007, you can uninstall Office 2007 and just use Office 2013 to get a better experience.

Regards,

Melon Chen
TechNet Community Su