There are three primary reasons why you are encountering a password request for GSM Aladdin v21.42:
The developers of GSM Aladdin implemented a security feature to prevent piracy. The software would only run if the correct hardware box (dongle) was connected to the PC. However, many cracked or "clone" versions of v21.42 circulated online. These cracked versions often bypass the hardware check but introduce a new obstacle: gsm aladdin v21.42 password