Electronic certificates on Android mobiles
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To avoid error 403 on Android devices follow these instructions:
NOTE: On devices with Android system, the Mozilla Firefox browser DOES NOT manage electronic certificates. Access must be done with Google Chrome (or Microsoft Edge failing that).
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Checks if there is a certificate installed and valid on the device. The certificate may be expired, revoked, or corrupted. It is also possible that you do not have any certificates installed in the Android certificate store. To check the certificates installed on Android 7 (on Android 6 and below, it is generally not possible to check which certificates are installed on the system) go to "Settings", "Passwords and security", "Privacy", "Encryption and credentials " and "User Credentials". The route varies depending on the device and/or version of Android, to try to locate the option, we recommend using the settings search engine (magnifying glass or top search box) where we can search for "Credentials".
When accessing "User Credentials" the list of installed certificates appears. With some exceptions, the certificate data is not detailed (NIF, surname and first name, expiration date, etc.), it only shows the name that was assigned when the certificate was installed.
Verify the correct functioning of the certificate on the issuing entity's website. If you are from FNMT access: https://www.sede.fnmt.gob.es/certificados/persona-fisica/verificador-estado and check the information related to the certificate: If the certificate is correct the message will be "Your certificate has just been verified. You are in possession of a digital certificate FNMT Valid and not revoked . Your certificate is working correctly."
If you have a valid copy of the certificate you can import it to the device.
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Quit the browser completely . It is necessary to completely exit the browser for the certificate selection window to appear again. Normally the process remains active. To ensure that a browser is closed, we display the "Recent Applications", normally you have to press and hold the button that is found by default (depending on the version) at the bottom and, in the list that appears below, we drag the application off the screen to close it or press the specific button.
Restart the browser and make sure to select the appropriate certificate when signing.
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We recommend deleting temporary files and cache from the browser so that the error is not repeated because it is stored in memory.
In Google Chrome, click on the three-dot options menu and access "History", select "Clear browsing data...", click on "Advanced settings" and select "Since always", leave the "History" options checked. navigation", "Cookies and site data" and "Data for auto-completing forms". Then press "Delete data".
In Microsoft Edge, open the options menu (located at the bottom, where the three dots appear) and click on "Settings" (the gear wheel). Go to "Privacy and security", "Clear browsing data". Display the "Time Range" and select "Always." We check "Browsing history", "Cookies and site data" and "Autofill form data". Then we click "Delete data".
- Reinstall the certificate. If the error persists, it is recommended to reinstall the certificate using a copy that previously exists or that you can generate from a computer and attach it to an email to install it from there. We recommend consulting the help: "Android - How to import an electronic certificate" located a little higher in the drop-down.