I have Adobe DC 2015 and get the error 2148073494 when I use the digital signature. How do I fix this?

Your best solution is to create a new signature with windows certificate and use it. I did the same and it worked in Adobe DC.

Hello Thierry,

As per the description above, you are getting an error "THE WINDOWS CRYPTOGRAPHIC SERVICE PROVIDER REPORTED AN ERROR: KEYSET DOES NOT EXIST. ERROR CODE 2148073494" while using the Digital signature, Is that correct?

Please refer to the following link which discusses  the similar issue Sign - Error Code: 2148073494  Link: https://forums.adobe.com/thread/626244

https://acrobatusers.com/forum/security/signature-error-platform-error-keyset-does-not-exist/  Link: https://acrobatusers.com/forum/security/signature-error-platform-error-keyset-does-not-exist/

You may also refer to Windows Cryptographic Service Provider, Keyset does not exist Error Code 2148073494

Hope this helps, and let us know how it goes.

Regards,

Anand Sri.