Hi, I got a problem with an activation message from an "open source kind of" Office 2010 Professional Plus which is running on a genuine Windows 8.1. I had a look at the thread here... forums. mydigitallife . info/ threads/ 34548-Office-2010-which-version-activation ...and followed the link but am somewhat in doubt about how to proceed and I don't want to mess around with the rest of the files on this machine since it is vital to me that it also will run smoothly in the future. In other words I can't afford to let it go haywire. I installed the version of the before mentioned Office on the machine after having updated all the Windows 8 files previously first and unfortunately came to download and install security and other Office 2010 updates later on after which the activation messages started appearing. Now I am kind of stuck with three days left for the usage. Can anyone help me out here and point me into the right direction. Willing to learn fast and do a lot of the effort myself if only I get the right bits and angles... Thanks to all for helping out.