The computer cannot recognize the access of the U-key device, because if the digital certificate is not inserted, please access the device. If the computer cannot recognize the access of the U-key device, try connecting the U-key device to the USB socket behind the host. If the above methods cannot be solved, please contact CA customer service.

You can apply for a digital certificate when you sign up for a project on the government procurement website. After the application is completed, you need to download the signature software containing the digital certificate client from the government procurement network. After the bidding documents are compiled in the bidding software, they are stamped and encrypted with digital certificates. If the signature of the digital certificate can't be verified because the computer is turned off improperly, you can press F8 to open the system with the signature of prohibiting forced driving, but some software can't be opened, and it is also very troublesome to start the computer.

Extended data:

Matters needing attention in using digital certificates:

1. Close other applications such as browser, Windows firewall and antivirus software before installation.

2. If the terminal with the key driver has been installed before, it is recommended to uninstall it first, and then reinstall the new version (uninstall by using the automatic uninstallation of the digital certificate driver, restart the computer and reinstall it).

3. Because this digital certificate driver conflicts with other digital certificate drivers, please check whether there are other digital certificate drivers in the operating system (for example, digital certificate drivers for online banking, etc.). ). If they already exist, please uninstall, restart and start installing this program.

Baidu Encyclopedia-Digital Certificate