Error: Microsoft JET Database Engine error '80004005' Could not use ''; file already in use
Error:
Microsoft JET Database Engine error '80004005'
Could not use ''; file already in use
Solution:
The error suggests that the database is open in another program, like MS Access OR another program has access to it.
It is also sometimes caused by corruption on the server or incorrect permissions on the folder with the database so that it is unable to delete the lock file. Delete the database from the server and re-upload.
It is also sometimes caused by corruption on the server or incorrect permissions on the folder with the database so that it is unable to delete the lock file. Delete the database from the server and re-upload.