Here is a list of problems that can lead to that same Windows CSP error: when the entire requested hash algorithm is intact. In recent releases, Acrobat DC has also stopped relying on SHA1 hashing. If the system hash requested by Adobe does not work, you will see an error message.
Cryptographic service error. When signing a PDF in Acrobat DC or Acrobat Reader DC studies, the following error message is displayed: “The Windows Cryptographic Service Provider reported an exclusive error: Key does not exist. “Error: 2148073485”. Background: SHA256 has been using Acrobat’s default hashing algorithm since version 9.1.
What is the error code for Windows cryptographic service provider?
Windows CSP Error Not Valid Error Token: 214807xxxx – A specific identifier is causing this issue (the error code may vary in different cases). Consider cleaning the device from your computer, which might fix the problem for you. 3.
How to fix Windows cryptographic service provider error?
Remove redundant certificates: The Windows CSP error you saw could actually be the result of certificates causing problems for others. You can do it the right way by finding or preventing problematic issues and removing their certificates. Launch the Run application.
How do I resolve the Windows cryptographic service provider reported an error?
Solution: Check for an updated driver. Check your device or signature driver for an updated driver that might fix this error. If our own hash algorithm is requested based on the signer, the service should set the important aSignHash entry to SHA1 as described on this approach page.
How to fix Cryptographic Service Provider ( CSP ) error?
In the Services window, scroll down to Cryptographic Services, then right-click it and select Restart. Close the Service Viewer. Reboot your computer and after restarting check if you are facing the certificate issue. If you are still facing the same problem, work on a solution.

Ermias is a tech writer with a passion for helping people solve Windows problems. He loves to write and share his knowledge with others in the hope that they can benefit from it. He’s been writing about technology and software since he was in college, and has been an avid Microsoft fan ever since he first used Windows 95.