Microsoft revealed the newest version of Office; Office 2013 which is available as a free download (Office 2013 Offline Installer Download). Office 2013 is a souped up version of Office 2010 and uses the Metro interface.
Also Read: Office 2013 Review | Office 2013 Screenshot Tour
While Office 2013 can work simultaneously with earlier versions of Office including Office 2010, there might be reasons where you might want to uninstall it. Uninstalling Office 2013 is pretty simple, however, with Office 2013, Microsoft introduced a new feature where they restrict a single install to 5 computers. So you will also have to deactivate a PC online when you uninstall Office 2013 from your PC.
The first step in uninstalling Office 2013 is to go to https://officepreview.microsoft.com/en-us/MyAccount.aspx (this link will change for future versions) and sign in with your account. Once you have done that, click on the Deactivate link next to the PC you are uninstalling Office 2013. Deactivating the PC will allow you to install Office 2013 on another PC.
After you have deactivated the PC, you can open Control Panel -> Programs -> Uninstall a program and look for an entry named “Microsoft Office 365 Home Premium Preview” and click on the “Uninstall” button.
Once you have done that, a new dialog will pop up asking you whether you want to really uninstall the product. Click on the “Uninstall” button in that dialog to perform the uninstallation.
After the uninstallation has been complete, you can check if your older Office products work or run the Repair tool accompanying that product to fix the errors.