When installing Microsoft Office 2010, which came via Microsoft Office 2010 Technical preview and later got leaked on most torrent sites, it will ask you to upgrade your previous installed version or make a fresh installation after uninstalling previous installation such as Office 2007, Office 2003 or Office 2000 etc. However, if you want to keep Office 2007 and Office 2010 side by side without uninstalling or upgrading Office 2007, this will be possible.

One simple trick will help you in this case where you can keep both MS Office 2010 and MS Office 2007 in one computer. While installing Office 2010, install it on a directory other than the previous installation. Lets say you have already installed Office 2007 in C: drive’s office folder, you may change the drive location to D: or any other folder in drive C: while installing Office 2010 suite. In this way the previous installation files won’t get overwritten and they will stay intact along with Office 2010 files.

Follow the below steps while installing MS Office 2010 :

1. Run Office 2010 installation wizard and from the menu, select Customize
2. Click Browse to select a location which should not be the existing Office installation folder



3. Now the installation should continue on a new destination and you will get two Office suits intact
4. You are done.