Error got while digital signature

Hi Chenjiechen,

Thanks for reaching out. As described above, you are getting error while creating the digital ID , correct?

What is the version of the Adobe Acrobat DC you are using? to check the version of the application, please go to Help > Click, About Adobe Acrobat DC.

Check for any missing update try updating the application. Go to Help > Check for Updates.

Also, try to repair installation (For windows Only) go to Help >  Repair Installation.

You may also try the steps provided in the help article - https://helpx.adobe.com/in/acrobat/using/digital-ids.html#create_a_self_signed_digital_id

Let us know if that works for you

Regards

Amal