A Microsoft file hosting and synchronization service.
Dear EJ,
First I’d like you to confirm whether you are using the latest version of the OneDrive sync client. If no, I suggest you download the latest version of the sync client from the article.
Meanwhile, I suggest you follow the steps in the article to reset the OneDrive sync client and then restart it to see the result.
Based on the error message provided, the issue may be related to the file association on your Windows 10, I suggest you go to Default Apps>click on Reset in Reset to the Microsoft recommended defaults and then restart the computer to see the result.
Moreover, some issues may be related to your local user profile, I recommend you log into your computer with a new user profile and do a test to see the result. If the issue doesn’t happen in the new user profile, I suggest you post a new thread in the Windows category on our forum for expert help.
If the suggestions above don’t solve the issue in your environment, we have a specific channel to cope with the OneDrive sync client’s related questions and issues. I suggest you click on the OneDrive sync client>More>Get Help to report the issue to our related team as soon as possible so that they can involve more resources to fix the issue in your environment.
Best Regards,
Cliff