How to create a backup copy of your electronic certificateSkip information index
Windows - Certificate copy in Microsoft Edge
To make a copy of the electronic certificate from Microsoft Edge, access the "Settings and more" menu at the bottom of the address bar identified by the three horizontal dots icon and go to "Settings".
Click on "Privacy, search and services" in the left-hand margin, find "Security" and click on "Manage certificates".
On the "Personal" tab, an electronic certificate should appear.To make a backup copy (export), select the relevant certificate and click on "Export...".
Then open the "Export wizard".Click "Next" and then mark the box "Export private key" (if you have just obtained your certificate and cannot mark it, it's possible that there has been a problem with downloading or installation;in that case, contact the certificate issuing entity).
On the following screen, leave the options that are ticked by default and press "Next".Check the "Password" box and set a password to preserve security.This option is essential if you wish to later import the certificate into a browser such as Mozilla Firefox.If you forget your password there is no way to recover it.Click "Next".
Click on "Examine" to select the location where you want to save the certificate copy, give it a name and press "Save", "Next" and then "Finish".
If all went well, the message will appear "The export was completed successfully".
The icon for a valid copy is an open envelope with a green certificate sticking out and a key, with the file extension .pfx.If you can't see the extension, right click on the certificate icon and go to "Properties".
If you cannot mark the box "Export private key", the result will be an invalid copy (the file will have the extension .cer and the icon will be a certificate with no key symbol).The private key is the personal information contained in the certificate and without which it is not possible to sign.
If the copy were not valid, it would be installed on the "Other persons" tab instead of on the "Personal" tab and the certificate would not be valid to work on the AEAT website.If at any time you need to reinstall (import) your certificate and you do not have a valid copy, you must request a new certificate.