I have an old copy of MS Office Pro that I was using on my old Windows 10 PC which crashed. When I tried to install that copy of Office 2010 on my "new" computer it will not validate the product key. Is there any way that I can get this validated? Every time I open one of the programs I get the registration window and I am afraid that one day I won't be able to use any of the programs. I am not a young person and I don't use Office for much, just a few things that I need to do and I use Outlook. I have gotten so used to 2010 that I really don't want to change and I won't spend the money for 365 which is so over the top for what I need Office for. Please, any advice helps.