I'm attempting to use Acrobat 11 Standard to digitally sign a PDF document with a 2048 bit certificate from our internal certificate authority, and I'm receiving the following error:
Error encountered while signing:
The Windows Cryptographic Service Provider reported an error:
The requested operation is not supported.
Error Code: 2148073513
The operating system is Windows 7 Enterprise x64. When I remove Acrobat 11 Standard and install Acrobat 9 Standard on the same Windows 7 system, I am able to successfully sign the document using the same certificate that was giving the error with 11. Also we have been using Acrobat 9 on Windows XP with these same certificates for a long time and never encountered issues with digitally signing.
Any ideas of what might be causing this issue?
Thanks in advance
Josh