I've been having the same problem with the F1 and other 'help' shortcuts not working in Word 2016. I also have another version of Microsoft Office (2010) on my computer. I am running Windows 10. The problem only started a few weeks ago. 'Help' still works
in Excel and PowerPoint, but not in Word 2016. I got them from the 365 package through my college. I checked the Trust settings in Word, those are fine. My default browser is Firefox. In order, I tried all of the following, sometimes multiple times.
I tried renaming the Help folder to Microsoft Help.OLD....ran a quick repair...it replaced the folder. Nothing changed.
I then tried running the Online repair, but it keeps telling me I'm not connected with an Error code: 30094-9. I have been unsuccessful in finding the meaning for the error code. The links in this error window will not work, either. I am clearly connected
to the Internet if I am able to write to you here. I tried the 'Quick Repair' again to no avail.
I tried updating to the latest version and restarted my computer. Nothing changed.
I have tried other suggestions to clear the SLL state. My browser history was recently cleared...the problem persisted after this.
The only thing I haven't tried is reinstalling the whole thing. I read on here that some people tried this and it crashed the help function for the other programs by not installing a Microsoft Help folder at all.
I really need these 'Help' functions to work. I am in school online with limited instructor interaction. Going to Office.com as directed from the 'Help is not working....' window does very little to help me.
Thank you