Did you insert the bjca lock or didn't find the usbkey of BJCA? Please insert and try again. What's the problem?

According to the screenshot provided, this is a digital certificate product of Beijing Digital Authentication Co., Ltd. The problem is that there is no certificate running environment installed on the computer or the version is too low.

1. Solution: You need to link to the official website page on this page or at the bottom of this page, and find the certificate application environment of the corresponding company to download: installing the certificate running environment can solve the problem.

2. Illustration reference: The following are the solutions to the problems encountered by the letter. If it is a digital certificate of other companies, the solution to similar problems is similar. The diagram of this problem is as follows:

Log in again and insert the usbkey to automatically detect the certificate name. The problem is solved.