Unable to set up Multi-Factor Authentication (MFA) under customer or reseller account in Plesk: QR code is not displayed

Dobrin Ivanov

Updated October 06, 2026 08:19

kb: bug Plesk for Linux ext: mfa

Applicable to:

Plesk for Linux

Symptoms

When setting up Multi-Factor Authentication for an administrator or a customer user in Plesk, the QR code is not displayed on the Extensions > MFA > Enable MFA screen.
Clicking Could not scan the QR code? and copying the value from Enter the key returns an Undefined value.
The issue occurs when the Multi-Factor Authentication (MFA) extension version 1.3.2-18453 is installed.

Cause

The issue is caused by a Multi-Factor Authentication (MFA) extension bug identified as EXTPLESK-14305, where the QR code and the secret key are not shown during MFA setup when MFA is enforced via the enforce option in panel.ini.

The bug is fixed in Multi-Factor Authentication (MFA) extension version 1.3.3.

Resolution

In order to resolve the issue, update the Multi-Factor Authentication extension to the latest version.