安装virtualbox失败 提示WinVerifyTrust failed ,这个问题一直纠结了好久，先说下问题出现的环境
The WinVerifyTrust problem seems to occur due to lack of an appropriate CA root certificate installed within the Windows Trusted Root Certification Authorities store.
To solve the issue, you can try installing whichever of the VeriSign Public Primary Certification Authority root certificate(s) apply to you. For example, in my case, I required the VeriSign Class 3 Public Primary Certification Authority - G5 (Root 3) CA certificate. You'll download it as a .pem but to install it, you can change the certificate file's extension to .crt then double-click it and click 'Install Certificate'. It should automatically be installed to the appropriate certificate store.
After installation, VirtualBox 5.0.2 starts up without the WinVerifyTrust error.
看到了，就是下载个VeriSign Class 3 Public Primary Certification Authority - G5 (Root 3) 证书，然后改证书的扩展名伟crt ，双击安装，就可以了。