I use several forms that were created in Adobe Pro and have signature fields. The forms are completed by other people outside of our organization, then emailed to us for signature. For the past 24 months, the signer has been able to touch the signature field, choose their signature, type their password, and sign the document. All of this was completed in Adobe Reader DC. Starting yesterday, when the signer touches the signature field, a box pops up indicating that a Digital ID Configuration Required. If you touch "Configure Digital ID," you then have to search for the signer's signature file, enter the signers password, then select the signature file again, and then enter the password again to be able to sign.
If I open Acrobat Reader DC and get into signatures, Adobe can "find" the signature files. If I open a PDF file in Reader DC, I have the problem stated above - it seems like the program no longer "sees" all of the signature files that it used to see, and which are still there.
How can this be corrected ASAP?