If the TFA QR code is lost or the authenticator app is unavailable, you can reset a secret key associated with your break-glass account. In a managed service provider (MSP) environment, a tenant administrator can reset the secret key.
Procedure
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From the Command Center navigation pane, go to Explore > Companies.
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Click the Company.
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On the Overview tab, in the Break-glass account section, click Reset secret key.
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To perform the operation, enter the 6-digit PIN from your authenticator app and click Continue.
If you haven’t set up the authenticator app, click Send PIN to Email to receive the 6-digit code in your inbox.
A message appears saying the secret key has been reset successfully.
What to Do Next
If you reset your secret key, the next time when you log on with the break-glass account, a QR code appears on the login page for two-factor authentication setup.