If you are seeing the error message , it means your WPA/WPA2 cracking attempt was technically successful in terms of capturing the data, but the "key" to the front door wasn't in your dictionary file.
Scenario : A penetration tester tries to crack a home Wi-Fi handshake. Handshake : Valid, captured correctly. Wordlist : probable.txt (full 1.6B passwords). Result : "Failed to crack." If you are seeing the error message ,
During a wireless security assessment, a valid four-way handshake was captured. The probable.txt wordlist — a popular, large-scale password compilation — was used with a cracking tool (e.g., aircrack-ng , hashcat , or john ). The attack failed to retrieve the pre-shared key (PSK). This report outlines the probable causes, technical limitations, and recommendations for future success. and recommendations for future success.