Generally, there are two possibilities in this situation. China Bank online banking system maintenance, the solution is to try again later. Ukey certificate or digital certificate is not normal. Solution: restart the computer and operate again, but it still doesn't work. Update the certificate driver. Open IE browser, click Tools, and then click Internet Options; Click "Content" in Internet options, and then click "Clear SSL status"; Open IE browser, click Tools-Internet Options-Security-Default Level, and then click Custom Level. Then you can reinstall the certificate and U shield.

If there is a digital signature error in online banking, you can try the following operations: Reinstall the online banking control and the U shield driver. If there are multiple certificates in IE browser, please select the certificate accurately; Plug in the U shield and check whether the certificate information is imported; If the computer is a Vista operating system, please right-click IE browser and select "Run as Administrator"; If the above methods are still not solved, please bring your U shield, bank card for opening e-banking and valid ID card to any outlet in the country to handle the certificate recovery business. If conditions permit, it is recommended to use U shield at outlets as much as possible.