1, network communication failure.
2. The online banking certificate was downloaded incorrectly.
3. The security control is not installed.
4. Browser version problem.
Solution:
(1) Check whether the certificate is successfully connected to the computer.
(2) Check whether the certificate manufacturer correctly installed the certificate driver.
(3) Delete the old certificate from the browser (key check).
(4) Reinstall the latest drivers and patches and change to an IE kernel browser.
(5) If the problem still exists, please go to the outlet for certificate recovery and download.