This question was probably covered here, But since being a newbie I can't find any reference to it. (sorry) My problem is that I cannot install Office 2010 or 2013 on a Windows 8.1 Machine. 2010 just comes back with an error (unspecified) and says the installation could not be completed. 2013 MS Office eval disk goes through the process but backs out of the installation about 3/4 of the way through giving me a Bootstrapper error. I tried using the Windows toolkit and ran the uninstall link of Office 2010. It did find some things and for a second there it looked like the problem was solved. But the MS 2010 or 2013 installer still fails. I also think it might be a good idea to mention that MS Office 2010 was once installed but it expired. I un-installed using the programs and features control panel app. I don't know if it left some reg keys or some other garbage behind. So, if anyone could be so kind to point me in the right direction, I would really appreciate it. Thanks in Advance.