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Icbc u shield, when trading, always prompt data signature error, strange!
If the indicator light on the key is always on, it means that the connection is good and you can operate it again. If it still does not light up, please follow the following steps:

(1) Reinstall the U shield driver of the corresponding brand.

(2) Check whether your system is fully patched. If not, please use the update function of WINDOWS to upgrade.

(3) If your system is 2000 or XP, please select "Services" under "Administrative Tools" in the control panel to check whether the smart card is enabled. If not, please enable it.

How to reinstall the U-Shield certificate driver:

1. Unplug the U shield client certificate and uninstall the original certificate driver;

2. Logging in to windows also has system administrator rights;

3. Please log in to www.icbc.com.cn, the portal of China Industrial and Commercial Bank, and click "Download" under "Personal Online Banking Login". After entering the next page, download and install the "U Shield" driver.

4. Restart the computer, and then connect the U shield customer certificate.