Getting "The network path was not found" when trying to open remote cert store

Question

I'm trying to get a list of non-expired certificates from the cert stores of remote machines. For some machines this works fine, but for others I'm getting the following error:

Internal.Cryptography.CryptoThrowHelper+WindowsCryptographicException: The network path was not found.
at Internal.Cryptography.Pal.StorePal.FromSystemStore(String storeName, StoreLocation storeLocation, OpenFlags openFlags)
at System.Security.Cryptography.X509Certificates.X509Store.Open(OpenFlags flags)
at GetCertificates(String server)

Here is the piece of code where this is coming from:

var store = new X509Store($@"\\{server}\My", StoreLocation.LocalMachine);
var certList = new List<X509Certificate2>();
try
{
     store.Open(OpenFlags.OpenExistingOnly | OpenFlags.ReadOnly);
     certList = store.Certificates.Cast<X509Certificate2>()
                     .Where(x => x.NotBefore < DateTime.Now &&
                                 DateTime.Now < x.NotAfter).ToList();
}
catch (Exception e)
{
     throw;
}
finally
{
     store.Close();
}

Any ideas why this maybe happening for some machines and/or possible workarounds/solutions?

Thank you

Answer 1

Found a solution. I ran my application as an administrator and now it seems to be able to resolve the network paths. I'm guessing we have some configuration/permission setup for these servers that only allow 'admins' to access the certs remotely.