The answer is: The online banking opened by Youdun of Guangxi Rural Credit Cooperative in the rural credit cooperative bank, but the U shield plugged into the computer did not respond. The reason is: 1, poor contact of U shield. Pull out the U shield and insert it again or change a USB port. 2. Install the U shield program, and then click Start-Program-E Road Escort Online Banking Security Component of Rural Credit Bank-Internet Shield Management Tool-Internet Shield Management Tool, and a U shield prompt will appear in the lower right corner. Note: You can bring U shield and related materials to the bank counter for consultation. What do you mean, certificate signing failed? Signature failed because the information returned by the host is inconsistent with that of the digital certificate. A: Reason 1: The system input information is wrong; Reason 2: The user information of U shield is incorrect; Reason 3: wrong signature operation; (For example, Zhang San's signature column is wrong with Li Si's U shield; You can't use one person's certificate to sign all the signatures; Solution: (1) The handler confirms to fill in the correct application data (name, certificate number and certificate category); (2) Select the corresponding correct digital certificate (serial number) when signing; (3) The digital certificate user himself carries the valid certificate and U shield to U shield bank to check the information (name, certificate number, certificate type; Three conditions must be correct and consistent, and none can be verified); (Note: Whether there are spaces in the data filled in, the certification body shall ensure the data transmission is accurate when the data are consistent. (4) If the natural person is a foreigner and the ID card type is a non-mainland resident ID card, such as mainland pass (Hong Kong, Macao and Taiwan), home visit permit, passport, etc. At present, the banks that support foreign hukou personnel to handle UKEY are: China Construction Bank, China Bank and Ping An Bank (from other banks, you can ask whether the proof of non-mainland ID card can be used for the registration of commercial entities before handling it. (5) Change of registration and cancellation of registration: the information originally registered in the industrial and commercial sub-bureau is incorrect, which makes it impossible to verify the relevant personnel information (it must be consistent with the digital certificate information: name, certificate number and certificate type); You need to bring your business license and valid certificates of relevant personnel to the branch to apply for errata data. After correcting the data, delete the temporary application data, resubmit the new application data, and download the PDF form for signature and submission.