If you get this error during an attempt to write to a file (and/or your program aborts with Error 24), then see "Write protected." . If you get an "Access Denied" pop-up error message when printing to a Window shared printer, you may need to create a local port which points to the network device. To do this, use the Add Printer wizard, select Local Printer (not network), then choose the option to add a local port, and enter the printer’s network share name (e.g. \\server\printer).

In general, this error indicates (rather obviously) that you do not have sufficient privileges to perform the specified action. Both UNIX and Windows (under the NTFS file system) have mechanisms for assigning access privileges to files, programs, directories and other resources. Consult your operating system documentation, and also Installation for further details.