## Linear Ticket
-
https://linear.app/chatwoot/issue/CW-6883/allow-disabling-2fa-using-a-backup-code
## Description
When a user loses access to their authenticator app, they can now
disable 2FA using one of their saved backup codes (in addition to their
password), so they can re-enroll a new authenticator. The disable dialog
includes a toggle to switch between entering a verification code and a
backup code.
## Type of change
- [x] Bug fix (non-breaking change which fixes an issue)
## How Has This Been Tested?
- Via UI flows
<img width="495" height="423" alt="Screenshot 2026-04-20 at 2 17 21 PM"
src="https://github.com/user-attachments/assets/cc6b3dc5-39e6-4104-b5b9-cdabdc46947e"
/>
<img width="475" height="409" alt="Screenshot 2026-04-20 at 2 17 36 PM"
src="https://github.com/user-attachments/assets/97c7304d-4adb-42ed-b7b4-50f5b38585a3"
/>
## Checklist:
- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules
## Linear:
- https://github.com/chatwoot/chatwoot/issues/486
## Description
This PR implements Multi-Factor Authentication (MFA) support for user
accounts, enhancing security by requiring a second form of verification
during login. The feature adds TOTP (Time-based One-Time Password)
authentication with QR code generation and backup codes for account
recovery.
## Type of change
- [ ] New feature (non-breaking change which adds functionality)
## How Has This Been Tested?
- Added comprehensive RSpec tests for MFA controller functionality
- Tested MFA setup flow with QR code generation
- Verified OTP validation and backup code generation
- Tested login flow with MFA enabled/disabled
## Checklist:
- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented on my code, particularly in hard-to-understand
areas
- [ ] I have made corresponding changes to the documentation
- [ ] My changes generate no new warnings
- [ ] I have added tests that prove my fix is effective or that my
feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged and published in downstream
modules
---------
Co-authored-by: Pranav <pranav@chatwoot.com>
Co-authored-by: Sojan Jose <sojan@pepalo.com>
Co-authored-by: Muhsin Keloth <muhsinkeramam@gmail.com>
