Configure signature and timestamp in Adobe Acrobat Reader
Check installed certificates
To check installed certificates in Adobe Acrobat Reader:
Open Adobe Acrobat Reader.
In the menu bar, navigate to Acrobat Reader > Preferences > Signatures.
Under Identities and Trusted Certificates, select More.
Select Digital IDs.
Select the desired certificate from the list to check.
Configure a timestamp server
To configure a timestamp server in Adobe Acrobat Reader:
Open Adobe Acrobat Reader.
In the menu bar, navigate to Acrobat Reader > Preferences > Signatures.
Under Document Timestamping, select More.
Select Time Stamp Servers > New.
Enter name and server URL. (for example: http://ts.quovadisglobal.com/ch for Swiss/ZertES qualified remote signatures).
Specify whether the server requires a username and password, then select OK.
Set a default timestamp server
To set a default timestamp server in Adobe Acrobat Reader:
Open Adobe Acrobat Reader.
In the menu bar, navigate to Acrobat Reader > Preferences > Signatures.
Under Document Timestamping, select More.
Select Time Stamp Servers.
Select the timestamp server you would like to set as default, then select Set Default > OK.