1 On the View menu, point to Sort by in Windows 7 or Vista, or point to Arrange icons by in Windows XP, and then click Subject. 2  If a User Account Control dialog box appears, click Allow to continue. 3  Locate each .MSI file where the subject is Microsoft Office. 4  2007, right-click the .MSI file, and then click Uninstall.tep 3: Remove any remaining 2007 Microsoft Office installation folders. 1  Open the %CommonProgramFiles%\Microsoft Shared folder. 2  To do this, click Start, click Run, type %CommonProgramFiles%\Microsoft Shared, and then click OK.