Yes... of course, multiple access of MS application is allowed in access database. As MS access is a multi-user application and supports multi-user working with a database simultaneously. That means we can easily share the same file with multiple users and allow them access to the forms, reports and data. This one is the great benefit of Microsoft access versus single user applications. This is possible by placing the Access database on a share network drive. So, that multiple users can gain access to make changes to the data.
In Access 2010, the maximum number of users who can use the database at a same piece of time is limited to 255. For better performance and other reasons, it’s better to keep the number of users usage less than the exact configuration of your access database.