I'm trying to sign a PDF with my CAC (Common Access Card) but I see the error "the credential selected for signing is invalid". Digging deeper into the cert details, I see "invalid policy constraint".
This used to work 3 weeks ago when I last successfully signed a PDF. All on the same platform:
OS X 10.11.6
Acrobat Pro 11.0.17
Nothing obvious has changed on my end. I know my CAC cert is valid because I can sign the PDF with Reader on Windows 7.
How can I sign PDFs again on my Mac?
Yes, that is definitely the same problem I am having. Thank you for pointing me to that thread. Since we use Centrify here, I am stuck without a good workaround yet.