If the certificate expires or becomes invalid, it will not be able to sign the message. Please check the validity of the certificate first.

Online banking signature failure may be due to the following reasons: 1. The certificate has expired or is corrupted. I took my ID card and bank card to the bank outlet to reissue my certificate.

2. Due to network problems, the certificate was not installed correctly. It is recommended to delete the original certificate and reinstall it.

3. Incorrect password input will lead to failure. There are two kinds of data signatures, one is static and the other is dynamic. When transferring payment, you will be prompted to enter the corresponding number or letter on the password card, which needs careful proofreading to avoid mistakes and failures.

4. The ABC card can only be paid by opening the online payment function at the bank counter, otherwise it will also lead to failure.