Each time I try to open certain word documents over half don't open and pop-up states to check permission, memory or use FileFormatConverters.exe 

For Example, yesterday I used a old template that I had stored on my desk top saved, emailed to self to send today and now won't open.  I search FileFormatConverters.exe  p but nothing comes up.  

What do I need to do to view all my old word documents?  Thanks

Hi,

I need more details about this scenario to tell what the problem is.

Are the documents stored in the sync folder of OneDrive in local?

I want to know the exact error message it promprts so that I can do more research on it.

In addition, let me know the file extensions of which files you try to open.

Regards,

Melon Chen
TechNet Community Su

Hi,

You may need to download FileFormatConverters.exe from this link below:

https://www.microsoft.com/en-hk/download/details.aspx?id=3

As the message suggested, the tool should be helpful in your scenario.

Regards,

Melon Chen
TechNet Community Su