Can I put an existing access database on one drive and work in it simultaneously with another person?

Hi,

My understanding it that you want to share/work Access database via One Drive, am I right? If yes, unfortunately, we can't do it via OneDrive.

If we want to share the Access database , please try the following methods:

• Share a split database
• Share a database on a SharePoint site
• Share a database by using a server

For more detail information, please refer to the following link:

https://support.office.microsoft.com/en-us/article/Ways-to-share-an-Access-desktop-database-03822632-da43-4d8f-ba2a-68da245a0446?CTT=1&CorrelationId=e6202801-2cde-4b9a-b47b-d40c13ce2dee&ui=en-US&rs=en-US&ad=US

Regards,

George Zhao
TechNet Community Support