MS Word documents changing to .cpio files and then to .zip files I really need help with this issue: whenever I try to open a word document file from my Mac, the archive utility application opens up and turns the .doc file into a .cpio file and if I click on that it then turns into a .zip file. 

I've tried to research and even called Mac Support and they were not helpful. I just want my MS Word files to open up when I double click on them. I don't know how to stop the archive utility from opening up. It's a repetitive cycle of .cpio file to .zip file to .cpio and so on. 

If anyone knows how to fix this issue please let me know.
When a document opens with the wrong app the first thing to do is see what macOS thinks should happen.


In Finder find a document
Right click on it and choose Get Info
Look at what Open with... shows 
If it is the wrong application alter it to be the correct one e.f. Word in this case. You might want to Change all as well. 


If it is the correct app then more investigation needs to be done.