: Input your Debit Card number, Expiry Date, and ATM PIN.
If you are unable to use the online method (perhaps you don't have your debit card details handy at the moment but have the physical card), you can unlock your NetBanking at any HDFC ATM. how to unlock hdfc netbanking
This is the fastest way to unlock your account if you have your physical card handy. : Go to the HDFC NetBanking login page. : Input your Debit Card number, Expiry Date, and ATM PIN