This is a classic case of a "false positive" detection. Antivirus heuristics flag the file not because it damages the computer, but because of its capability . accesspv.exe has the ability to decrypt files that the user did not create—technically functioning as a "password cracker."
(Access 2007 and later), this specific utility may not be compatible. Official Methods accesspv.exe
Click the "Get Password" button within the application interface. Select the protected .mdb file you wish to unlock. This is a classic case of a "false positive" detection