A few weeks ago, I spotted this, when I went to apply updates to Office 365 ProPlus on my work laptop:
I changed the language order in my Office settings so that English was the first option after Match Windows. Whatever was causing Windows to fall back down the list then went to English rather than Arabic.
Now I can read the dialogue boxes on my Office updates!
[This is an edited version of a post that was originally published at markwilson.it]