the reasons are as follows. Once you are prompted' CA detection failed' and' No client or driver corresponding to this certificate has been detected' when logging in for many times, you need to pay attention to whether the PIN code is entered incorrectly. It is suggested that Zhengcaiyun Co., Ltd. be established by Zhejiang Provincial Department of Finance and Alibaba Group * * * to serve all kinds of users of government procurement and provide overall solutions for government procurement transactions and electronic management. Committed to building an ecosystem of government procurement cloud services.