I get this "The database has been placed in a state by user 'Bleep' on machine 'mmm' that prevents it from being opened or locked. - 3704" message when I try to open an MS Acces file. The file was created in the same version I run and several of my colleagues are able to open the file with no trouble. Does anyone know what this message is or why it is occurring?

Read info here how to fix Access file errors: https://www.fixtoolbox.com/accessfix.html
Also refer to the following Microsoft Article and check if this helps:
https://social.technet.microsoft.com/Forums/en-US/67852ccf-3c04-42c7-ac5c-6213d4d7b3a2/the-database-has-been-placed-in-a-state-by-user-admin-on-machine-that-prevents-it-from-being?forum=powerquery