When a certificate is installed using Outlook, users can only choose between the medium and high security levels. Both security levels result in Adobe not being able to access a private key without authorization from a user by entering their credentials.
This pop-up is generally intended as a security measure. If you wish to disable the pop-up, you can do so by using the following workaround, where the certificate is imported using the Edge browser:
Select “settings” in the Edge browser and select “Privacy, search, and services” on the left
Scroll down until you reach the “Security” section. Click on the button next to “Manage certificates”
You can now select and import your certificate using the dialogue window
While importing your certificate, make sure not to tick the “highest security level” tick box.
After importing your security certificate using Edge, the pop-ups should no longer be displayed in other applications.