Exception: System.Security.Cryptography.CryptographicException

Article ID: A1003
Last Review: November 3, 2004
Revision: 1.1

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Product it applies to
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Reference

• DynamicPDF Generator v3.0.0 for .NET & DynamicPDF Generator v3.0.1 for .NET
• DynamicPDF Merger v3.0.0 for .NET & DynamicPDF Merger v3.0.1 for .NET

• Exception: System.Security.Cryptography.CryptographicException: CryptoAPI cryptographic service provider (CSP) for this implementation could not be acquired.


OR


• Exception: System.Security.Cryptography.CryptographicException: An Internal error has occured

Windows Server 2000 & Windows Server 2003

• Insufficient File Permissions on the MachineKeys folder

Windows Server 2000

1. Navigate to: C:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys folder and right click on MachineKeys and select Properties.





2. From the tabs on the top, select Security.





3. If ASPNET account (displayed as ASP.NET) is not added under the name, add it using the Add button.
4. Give Modify, Read & Execute, List Folder Contents, Read and Write Permissions to ASP.NET.

Note: Changes to the "userName" attribute of the machine.config's "processModel" node will affect which user account needs the permissions listed above. If it is changed from "machine" the specified user account will need to be used in step 3 above in place of the "ASPNET" account.

Windows Server 2003

1. Navigate to: C:\Documents and Settings\All Users\Application Data\Microsoft\Crypto\RSA\MachineKeys folder and right click on MachineKeys and select Properties.





2. From the tabs on the top, select Security.





3. If SERVICE or NETWORK SERVICE is not listed under Group or user names, add either one using the Add button.
4. Give Modify, Read & Execute, List Folder Contents, Read and Write Permissions to SERVICE or NETWORK SERVICE

• Microsoft Knowledge Base Article # 327587