How to make a backup copy of your electronic certificate

Windows-Copy of the certificate in Google Chrome

To make a copy of the electronic certificate from Google Chrome, go to the menu "Customise and control Google Chrome," at the end of the address bar, and go to "Settings."

Click on "Privacy and security" on the left margin, then "Security" and click on "Manage certificates."

The "Personal" tab must show your electronic certificate. To make a backup copy (export), select the corresponding certificate and click on "Export...."

The "Export Assistant" opens below. Click "Next" and then tick the box "Export the private key" (if you have just obtained your certificate and you cannot mark it, there may be some problem downloading or installing it; In this case, contact the entity issuing the certificate).

On the next screen, leave the options that appear marked by default and click "Next." Depending on the browser version, it may be mandatory to protect the copy with a password. This option is also essential to subsequently import the certificate in a browser like Mozilla Firefox. If you forget your password, there will be no way to recover it. Click "Next."

Click "Browse" to choose the location where the copy of the certificate will be saved, set a name and click "Save," Next "and then" Finish. "

If everything went well, the message "Export was made correctly" will appear.

The icon is a valid copy made will be an open envelope with a certificate peering out and a key and the extension .pfx. If the extension is not displayed, right-click on the certificate icon and go to "Properties."

If you cannot mark the box "Exporting the private key" the result would be a invalid copy (the file would have the extension .cer and the icon would be a certificate without any key). The private password is the personal information that the certificate contains and without which it is not possible to sign.

If the copy is not valid, it will be installed in the "Other persons" tab instead of in the "Personal" tab and the certificate would not be valid for working on the Tax Agency page. If you need to re-install (import) the certificate at any time and you do not have a valid copy, you must request a new certificate.