Enable Two-Factor Authentication (2FA) in Slack: A Secure Setup Guide

Updated at: 30/06/2025

In today's digital landscape, securing your communication platforms is paramount. This guide provides a step-by-step walkthrough on enabling Two-Factor Authentication (2FA) in Slack, significantly bolstering your account's security. Learn how to add this crucial layer of protection against unauthorized access, preventing data breaches and maintaining the confidentiality of your conversations and files. Follow our simple instructions to enhance your Slack security today.

Step-by-Step Instructions

  1. Access Slack Account Settings

    • Log into your Slack workspace.
    • Click the arrow next to your workspace name, then select 'Profile & account'.
    • Click the ellipsis (three dots) and select 'Open account settings'.
    • Click the expand button next to 'Two-factor authentication'.
    Click the expand button next to 'Two-factor authentication'. Click the expand button next to 'Two-factor authentication'. Click the expand button next to 'Two-factor authentication'. Click the expand button next to 'Two-factor authentication'.
    Access Slack Account Settings

  2. Set up Authenticator App

    • Choose an Authenticator app (Authy or Google Authenticator are recommended).
    • Install your chosen Authenticator app (if you haven't already).
    • Open your Authenticator app and add an account. Scan the QR code displayed by Slack.
    • Enter the code generated by your Authenticator app into Slack.
    Enter the code generated by your Authenticator app into Slack. Enter the code generated by your Authenticator app into Slack. Enter the code generated by your Authenticator app into Slack. Enter the code generated by your Authenticator app into Slack.
    Set up Authenticator App

  3. Secure Backup Codes

    • Record your backup codes in a safe, offline location.
    Record your backup codes in a safe, offline location.
    Secure Backup Codes
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Tips

  • Using an Authenticator app is more secure than SMS.
  • If using multiple Slack instances, Authy or Google Authenticator are recommended to avoid conflicts.
  • The Slack app on your phone may offer a magic link login option for convenience.

Common Mistakes to Avoid

1. Using a Weak or Reusable Password

Reason: A weak password is easily guessable, making your account vulnerable even with 2FA enabled. Reusing passwords across multiple accounts means a breach in one compromises them all.
Solution: Choose a strong, unique password for your Slack account and use a password manager to store it securely.

2. Ignoring or Dismissing 2FA Prompts

Reason: Disabling or consistently ignoring 2FA prompts weakens security and defeats the purpose of implementing it in the first place.
Solution: Always respond promptly to and approve 2FA authentication requests from your trusted devices.

3. Losing or Misplacing Authenticator App or Recovery Codes

Reason: Without access to your authenticator app or recovery codes, you may be locked out of your Slack account.
Solution: Back up your recovery codes in a secure, offline location and ensure your authenticator app is installed on multiple trusted devices.

FAQs

What is Two-Factor Authentication (2FA) and why should I use it in Slack?
Two-Factor Authentication adds an extra layer of security to your Slack account. Besides your password, it requires a second form of verification, like a code from your phone, to log in. This prevents unauthorized access even if someone gets your password.
What happens if I lose my 2FA device or phone number?
Slack provides recovery options. You'll typically need to contact Slack support to regain access. They will guide you through the verification process using backup methods. Make sure to save your recovery codes!