PushSharp APNS production: The credentials supplied to the package were not recognized (development works fine though)

I figured out the problem. I revoked and regenerated the certificate again, and this time I only exported the private key (without the certificate). In Keychain access, I exported as .p12 and used the new file and it worked. For some reason, PushSharp wasn't play well with .p12 when both certificate and private key are present in the file.

"The credentials supplied to the package were not recognized" exception usually indicates that the user running the code does not having enough permissions.

If you are sending push notifications from Azure web app or webjob do not load the APNS certificate from a file or base64-encoded string. Go to Azure Portal and add the certificate to website instead. Note the thumbprint.

Next add WEBSITE_LOAD_CERTIFICATES setting and set it to * (asterisk).

Now the APNS certificate can be used from C# code:

string thumbprint = "YOUR THUMBPRINT";
var store = new X509Store(StoreName.My, StoreLocation.CurrentUser);
store.Open(OpenFlags.ReadOnly);
var certificate = store.Certificates.Find(
    X509FindType.FindByThumbprint, thumbprint, validOnly: false)
    .Cast<X509Certificate2>().SingleOrDefault();
var apnsConfig = new ApnsConfiguration(
    ApnsConfiguration.ApnsServerEnvironment.Production, certificate);

References

• Using Certificates in Azure Websites Applications
• Configuring a certificate for APNS on the Azure platform