uses a file type that is blocked from opening in this version
When clicking on old .doc microsoft Word files on the MAC, in this case an iMac 27 5K running macOS Big Sur v11.6.5, a message “[filename] uses a file type that is blocked from opening in this version” may appear. This can be annoying. If you click on the link there is a suggestion from microsoft that the Word version does not have the latest update. However, I found the following workaround to work ok:
1. upload the file to google drive 2. then open it and download it in the odt format 3. open the odt file with Word on the mac and save it as docx.
Alternatively the following method also works
1. upload the file to google drive 2. then open it and save as a google docs 3. open the google doc and download as a .docx 4. open the docx on the Mac to verify.
Voilà!