---
title: What happens if I try to sign with an expired e.firma in Cincel?
description: Find out what happens if you sign in Cincel with an expired e.firma and how to renew it with the SAT to continue signing with full legal validity.
---

[Skip to content](https://help.cincel.digital/en/what-happens-if-i-try-to-sign-with-an-expired-e.firma-in-cincel#main-content)

- [English](https://help.cincel.digital/en/what-happens-if-i-try-to-sign-with-an-expired-e.firma-in-cincel)
- [Español](https://help.cincel.digital/e.firma-vencida)

English

Show submenu for translations

[Create support ticket](https://help.cincel.digital/en/kb-tickets/new?hsLang=en)

![Cincel 2025- 320x132-02.png\]](https://help.cincel.digital/hs-fs/hubfs/Cincel%202025-%20320x132-02.png?height=40&name=Cincel%202025-%20320x132-02.png)

Open main navigation

Close main navigation

- - [English](https://help.cincel.digital/en/what-happens-if-i-try-to-sign-with-an-expired-e.firma-in-cincel)
    - [Español](https://help.cincel.digital/e.firma-vencida)

  English
  
  Show submenu for translations
- [Create support ticket](https://help.cincel.digital/en/kb-tickets/new)
- [Go to CINCEL](https://www.cincel.digital/en)

[Go to CINCEL](https://www.cincel.digital/en)

 How can we help you?

- There are no suggestions because the search field is empty.

1. [Help Center](https://help.cincel.digital/en?hsLang=en)
2. [Troubleshooting and frequently asked questions](https://help.cincel.digital/en/troubleshooting-and-frequently-asked-questions?hsLang=en)

# What happens if I try to sign with an expired e.firma in Cincel?

If you attempt to upload .CER and .KEY files from an e.firma that has already expired, the Cincel system will detect its expiration and show you an error message or prevent you from continuing with the signing process. This is a security and compliance measure that Cincel implements to protect the integrity and legal validity of your documents.

---

**What to do if your e.firma has expired?**

If your e.firma has expired, the only solution is to process its renewal directly with the SAT.

- **Verify the expiration date:** Confirm the exact expiration date in your .CER files.

- **Schedule an appointment or renew online:** The SAT offers options to renew your e.firma online (if it meets certain requirements) or by visiting its offices with a prior appointment.

- **Obtain your new certificate:** Once the process with the SAT is completed, you will receive your new .CER and .KEY files, which will have a new validity date.

💡 **Cincel Tip:** It is recommended to check the validity of your e.firma periodically to avoid interruptions in your signing processes. Plan your renewal in advance!

- [Quick guides](https://help.cincel.digital/en/quick-guides?hsLang=en#main-content)

    - [Security](https://help.cincel.digital/en/quick-guides?hsLang=en#security)
- [First Steps and Basic Concepts in Chiseling](https://help.cincel.digital/en/first-steps-and-basic-concepts-in-chiseling?hsLang=en)
- [News and updates](https://help.cincel.digital/en/news-and-updates?hsLang=en)
- [User Guides: Signing and Managing Documents](https://help.cincel.digital/en/user-guides-signing-and-managing-documents?hsLang=en#main-content)

    - [Document Creation](https://help.cincel.digital/en/user-guides-signing-and-managing-documents?hsLang=en#document-creation)
    - [SIGNATURE](https://help.cincel.digital/en/user-guides-signing-and-managing-documents?hsLang=en#signature)
- [Account Management, Teams and Billing](https://help.cincel.digital/en/account-management-teams-and-billing?hsLang=en#main-content)

    - [Account Management](https://help.cincel.digital/en/account-management-teams-and-billing?hsLang=en#account-management)
    - [Team Management](https://help.cincel.digital/en/account-management-teams-and-billing?hsLang=en#team-management)
- [Legal Validity and Regulatory Compliance (Mexico´s Legal Framework)](https://help.cincel.digital/en/legal-validity-and-regulatory-compliance-mexicos-legal-framework?hsLang=en)
- [Security and Core Technology](https://help.cincel.digital/en/security-and-core-technology?hsLang=en)
- [Integrations and APIs for Developers](https://help.cincel.digital/en/integrations-and-apis-for-developers?hsLang=en)
- [Troubleshooting and frequently asked questions](https://help.cincel.digital/en/troubleshooting-and-frequently-asked-questions?hsLang=en)
- [Glossary of Terms](https://help.cincel.digital/en/glossary-of-terms?hsLang=en)

[![Chill listening crop-3](https://help.cincel.digital/hs-fs/hubfs/Cincel%202025-%20320x132-02.png?width=57&height=24&name=Cincel%202025-%20320x132-02.png "Chill listening crop-3")](https://www.cincel.digital/branding)

Cincel® 2024 / D.R., Grupo Cincel que conforma LUMIT DLT S.A.P.I. DE C.V. & CINCEL CERTIFICADORA DIGITAL S.A.P.I. de C.V.

Copyright © 2026, Cincel