If you have a legit copy of Microsoft Office 2013 then it should work fine.. It is only the illegal key generators that won’t work in Windows 8.
Cannot Activate because this product is incapable of KMS Activation
I found these instructions on this site…
Just make some calls, then you can activate it.
First find and install the newest KEYs according to the version you installed: VOL OR RETAIL…(A LOT YOU CAN FIND VIA GOOGLE)
Then open word, choose to activate via phone, choose region: UK\US…..
Then open skype, make free 800-xxxxx call, follow the guide and enter the numbers
When all done, and if the key still valid, write down the numbers given back.
At last, enter the numbers and Your office is activated!!
But I always recommend having a legit copy of any software as it always works better and you can always ask for support.
Mitz from Tips4pc