CryptoAPI error

I have 3 web applications that use pdf.kit to append a stamp to documents submitted via the site.. Yesterday 1 on them starting trrowing the folowing error:

CryptoAPI cryptographic service provider (CSP) for this implementation could not be acquired.

and quit stamping the documents. Any ideas as to why this is happening?

Thanks

Russ Vaughn

Dear Russ,

Thank you for considering Aspose.

Please refer to https://forum.aspose.com/t/134269.

I followed the link in your reply with no problem but the link

http://www.aspose.com/wiki/default.aspx/Aspose.Purchase/HowToFixCSPException.html

prodused the following message

Access Denied Message
You can not access: Aspose.Purchase

Please refer to http://www.aspose.com/wiki/default.aspx/Aspose.Corporate/HowToFixCSPException.html