How to check if a digital certificate is installed on the computer and for how long it is valid

Ministry of Regional Development General Directorate Civil Registration and Administrative Services（https://www.grao.bg/en/）

How to check if a digital certificate is installed on the computer and for how long it is valid

Start Internet Explorer – double–click on the icon .

From the "Tools" menu select "Internet Options".

Click on "Content" "Certificates ...".

In the field "Issued To" is the name to which the certificate was issued.

The "Issued By" field shows where the certificate was issued from – Bank Service (B–Trust), Information Services – AD, etc.

The field "Expiration Date" shows the date until which the certificate is valid – in the format DD.MM.YY.

In the specific example, there are two certificates installed.

The first is valid until October 20, 2004, and the second until August 23, 2005. You can get more information about the certificate by highlighting it and clicking the "View" button.

From the window that appears, the most important thing is that the picture in the upper left corner is green – this means that the certificate is valid.

If it is not green, but has a red sign with "X" thereon , it means that the certificate is not valid. Check the date until which the certificate is valid and if according to it it has not yet expired, but still the picture is red, it means that there is some other problem and it is necessary to consult with the organization that issued the certificate. The boxes "Issued to:" and "Issued By:" are analogous to the front screen – show in whose name and where the certificate was issued.

The box "Valid from ...... to ......" shows when and until when the certificate is valid – i.e. the second date (in this case 23.04.05) shows how long the certificate is valid.