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我正在尝试在 localMachine Root 中添加证书。下面是我尝试过的代码，但这不允许我添加到本地机器中，同时添加它说访问被拒绝。如何允许安装在本地机器内？

X509Certificate2 cert = new X509Certificate2(@"D:\MyCertificate.pfx", "Temp@1234",
                X509KeyStorageFlags.MachineKeySet | X509KeyStorageFlags.PersistKeySet);
// save certificate and private key
X509Store storeMy = new X509Store(StoreName.Root, StoreLocation.LocalMachine);
storeMy.Open(OpenFlags.ReadWrite);
storeMy.Add(cert);