Microsoft office would like to talk to you about that, but it can't because you're not running the same version.
Microsoft were still a tiny software house out of Albuquerque. M$ Office wasn't even in the Roadmap, even if they had a road map.
While Taiwan standardised, IBM then Compaq bastardised as did Apple and the rest.
I never said the road to compatibility was solely a x86 affair, but the 8bit Wild West that was the 80's wasn't good yet it did sort the men from the boys.