Log User Activity to a separate file

If they enable macros then yes.

You would need to place a call to the logging routine in the Workbook_Open event.

The logging routine can use simple file I/O to add a record to the file

Thisworkbook code

Please Login or Register  to view this content.

Module code

Please Login or Register  to view this content.

You need to search the forum for details on getting the logon and computer id.