A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
Hello, Sarah
Thank you for posting your query to Community Forums.
Per your description you want to set your SharePoint files to be open in desktop application.
If my understanding is correct, then I can suggest you do the following:
For a library go to Library settings>Advanced settings>Open in the client application:
If you want to enable this at site collection level, please go to Site information>View all site settings>Site Collection features> activate the feature as shown below:
Then make sure that the document library settings point to the client.
Feel free to post back to us if you need further assistance.
Best Regards,
Igor