This is caused by the inability to download the certificate after re-issuing the certificate. Please follow the steps below:

1. Click "iGTB Corporate Online Banking Login" on the Bank of China Global Portal homepage to enter the iGTB homepage, download and install the new version of Corporate Online Banking Assistant.

2. Insert the USBKEY to close the pop-up Bank of China official website, open the newly installed Bank of China Online Banking Assistant, comprehensively check the online banking environment, and complete the one-click repair.

3. After the repair is successful, return to the home page of the Online Banking Assistant and select more services. Click Certificate Management and enter the reference number, authorization code (printed at the bank counter) and verification code. After clicking to download the certificate, the certificate status is normal and you can log in to online banking.