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Old November 13th, 2009, 12:02 AM
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Default AxInterop.AcroPDFLib.dll throws "Class not registered" error on 64 bit OS

Dear All,

My VB.NET application uses AxInterop.AcroPDFLib.dll to open PDF files. This application works fine on a 32 bit operating system. But when the same application is used on a 64 bit operating system, it throws "CLASS NOT REGISTERED" error.

Is there a different version of AxInterop.AcroPDFLib.dll to be used for 64 bit operating system. OR is there any work around for this. Is there any other dll which can be used, which supports both 32 bit and 64 bit for pdf file operations?

In the project properties, the target compiler is "All CPU". Will it work by changing the Target CPU option to X86. If so what are the draw backs of the same.

Please let me know a solution for this problem.
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Old November 13th, 2009, 04:18 AM
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Why don't you try changing the target CPU and let us know if it works.
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