I am using adobe DC and am trying to submit a P11D form to HMRC but cannot validate the signatures/certificate. I am not very technical but have tried many of the suggestions found on the internet, all to no avail. HMRC suggested downgrading to adobe X1, but I don't want to do that unless it is the only option. Any ideas anyone?
Go to Edit - Preferences - Trust Manager and click both Update Now buttons,
then try again.
I cannot believe that it was that simple. Try67-Thank you so much.