Single lock, there is a lock inserted, but the software prompts that the lock cannot be detected. There are generally three situations.

1. The computer has no identification lock, which may be due to poor contact.

2. The driver of the identification encryption lock installed on the computer is not installed correctly.

3. The encryption lock hardware service is not started.

Sichuan hongye construction software co., ltd was established in 1998. After more than ten years of development, it has become a comprehensive organization integrating software development, software sales, system integration, industry training and engineering consulting. Its products have developed from a single cost software to five modules: engineering design, engineering cost, engineering management, education consultation and industry consultation.