Frequently Asked Questions

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Frequently Asked Questions

Document signing

How to sign a document using the e.firma in Mifiel

Document signing

Resources for document signers in Mifiel

How to sign without an e.firma in Mifiel using identity verification with biometrics

How to sign documents in Mifiel without an account using the signing portal

How to sign a document using the e.firma in Mifiel

How does Mifiel protect the use of my e.firma/FIEL?

How do I receive and download the signed document?

Features of the e.firma

How can I see the RFC associated with the e.firma/FIEL that I have?

What is the e.firma or FIEL, which are the files it encompasses and how does it work?

Common errors

I cannot sign, I get the message "The password is incorrect"

What can I do if my certificate is already linked to another account?

What can I do if I forgot my e.firma's password?

I cannot sign, I get the message “You selected a .cer file that corresponds to a CSD”

What can I do when my e.firma files do not match?

The system states that my RFC is incorrect

When I try to sign, it says that the .cer or .key file I selected do not correspond to an e.firma issued by the SAT

Why am I getting the error message “The e.firma you selected has expired/has been revoked” and how can I resolve it?

I was invited to sign but I don’t see the document in the "My documents" section

How to sign documents with an e.firma other than the one I have registered

How do I know if I am using the right files?

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