Because of that you need new certificates in your computer to digitally sign with digital stamper or to check the validity of the signature given by the digital stamper. The new certificate is included in the latest version of DigiDoc Client and will be installed automatically with the latest DigiDoc Client.

To update your DigiDoc Client please go to help vizard http://installer.id.ee or update it directly from http://installer.id.ee/media/DigiDoc.msi

If you want to install the certificate manually then you can find it from www.sk.ee/certs.

New certificates are included in DigiDoc Client version 2.6.10 or later. If you want to check what version of DigiDoc Client you have, open DigiDoc Client and go Help -> DigiDoc Client.