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POMoved asp.net site to new server, getting "Key not valid for use in specified state." error
 

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  1. POMoved asp.net site to new server, getting "Key not valid for use in specified state." error
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    <p>I have set up a brand new, clean server to run our asp.net 4 website on. I have copied over the wwwroot folder from one of the existing servers, imported the configuration, and imported pfx file from the "old" server.</p> <p>Our website contains a shopping cart and during the payment portion of the cart process on this new server it throws the following error:</p> <pre>[CryptographicException: Key not valid for use in specified state.] System.Security.Cryptography.ProtectedData.Unprotect(Byte[] encryptedData, Byte[] optionalEntropy, DataProtectionScope scope) +374 Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.ProtectedKey.Unprotect() +15 Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.SymmetricCryptographer.Decrypt(Byte[] encryptedText) +66 Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.SymmetricAlgorithmProvider.Decrypt(Byte[] ciphertext) +187 Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.Cryptographer.DecryptSymmetric(String symmetricInstance, Byte[] ciphertext) +114 Microsoft.Practices.EnterpriseLibrary.Security.Cryptography.Cryptographer.DecryptSymmetric(String symmetricInstance, String ciphertextBase64) +73 CompanyName.Objects.BasePayment.get_PaymentNumberLastFour() +17 [TargetInvocationException: Property accessor 'PaymentNumberLastFour' on object 'CompanyName.Objects.Payment' threw the following exception:'Key not valid for use in specified state.</pre> <p>The code has not changed, its the same code on the other web server so I'm assuming it has something to do with the machinekeys. I have tried removing the rsa keys from the application data folder but to no avail. I'm not very familiar with cryptography in asp.net so its probably something I'm missing.</p> <p>Anyone have any ideas?<br> Thanks.</p>
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    1. COHave you tried the solution offered here? http://forums.asp.net/p/1445940/3289695.aspx mirror link to the blog in case that website will be down: http://understandavinash.blogspot.com/2009/03/keysetnotfoundoracessdenied.html
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    2. COA couple google links suggest that this error can be cause by passing too many bytes to the Encrypt method. I'd guess that's not the case here, but could it be that your testing on the new server was a false positive?
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    3. COI wouldnt think the length would be the problem as it isnt a problem on the old ones. I did try the first solution to no avail.
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