Forgotten CRN? Simply, SMS CRN to 9971056767 using your bank registered mobile number and you will receive an SMS with your CRN. Forgotten MPIN? Step 1: Open your Kotak - 811 & Mobile Banking App Step 2: If you have never logged into the App: − Tap on ‘Forgot MPIN’ section If you see the home page of Kotak – 811 & Mobile Banking App: − Tap on 811 − Tap on ‘Forgot MPIN’ section Step 3: Reset your MPIN Reset via 'Personal details' − Tap on ‘Personal Details’ tab − Click on 'Continue' for mobile verification − Fill in your personal details & Click on 'Submit' − Set a 6-digit MPIN Or Step 4: Reset via 'Debit/Credit card' − Tap on ‘Debit/Credit card’ tab − Fill in your card details and then click on 'Submit' − Set a 6-digit MPIN Or Step 4: Reset via 'Net Banking' − Tap on ‘Net Banking’ tab − Enter your Netbanking password and click on 'Submit' − Set a 6-digit MPIN