Smart Sign-in using OneAuth
Smart Sign-in is a secure and seamless way to sign in to your Zoho account by scanning a QR code using Zoho's Authenticator app, OneAuth. You need not type in your username or password manually.
Prerequisites
- You need OneAuth installed on your mobile or windows device and be signed in with your Zoho account.
If you haven’t installed OneAuth yet, use this link: Install OneAuth (Android | iOS | macOS | Windows)
Platform-Specific Behavior
Android:
- v3.8.1 and above: Scan any QR
- v3.1 to versions earlier than 3.8.1: Smart Sign-in
iOS/Windows:
- Currently supports Smart Sign-in.
- Scan any QR is not yet available.
How to Use Smart Sign-in
For mobile
For Windows
For mobile
- Go to Smart Sign-in on your browser to scan the QR code.
- Open the OneAuth app on your mobile device.
- Tap Scan any QR in the MFA tab.
- Scan the displayed QR code using OneAuth.
- Complete biometric or PIN verification, if enabled. You will be signed in to your Zoho account.
For Android (v3.1 to versions earlier than 3.8.1) and iOS, tap Smart Sign-in instead.
For Windows
- Go to Smart Sign-in on your browser to scan the QR code.
- Open the OneAuth app on your Windows device.
- Click Smart Sign-in.
- Complete biometric or PIN verification, if enabled.
- A dialog box will appear displaying the tabs currently open.
- Scan the displayed QR code using OneAuth. You will be signed in to your Zoho account.
Select the tab that contains the sign-in QR code.
FAQs
1. Why can't I see the Smart Sign-in option in OneAuth?
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Possible Reasons
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Solution
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You are using an outdated version of OneAuth.
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Update to v3.1 or higher.
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For versions that use 'Smart sign-in' instead of 'Scan any QR'
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Your organization has enforced custom SSO authentication (SAML, JWT, or federated sign-in), which disables Smart Sign-in.
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Contact your administrator for clarification.
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Restrict Sign-in is enabled for your account.
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Disable it to use Smart Sign-in.
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2. Why am I getting a 'Smart Sign-in not allowed' error in OneAuth?
Possible Reasons | Solution |
Your organization has enforced other MFA modes (such as SMS based OTP, Security Key, or 2FA Authenticator) and has not included OneAuth as an allowed mode. | Your organization needs to allow OneAuth as an MFA mode for you to use Smart Sign-in. Contact your administrator for further clarification. |
Your account is MFA-enabled, but this device is not an MFA-enabled device for your account. | If you don’t have access to your OneAuth MFA-enabled Primary device, you can set another signed-in mobile device as your primary or secondary MFA device in OneAuth.
If both primary and secondary devices are inaccessible, repeat this process on another signed-in device to use Smart sign-in. |
IP restriction is enabled, and you are trying to sign in from a different IP address than configured. | Sign in from the allowed IP address or disable the restriction. For organizational restrictions, contact your administrator. |
3. Will enforced password changes by my organization affect Smart Sign-in?
No, Smart Sign-in will not be affected. However, if you sign in using your password instead of Smart Sign-in, you will need to change it when required by your organization.
4. Can I use Smart Sign-in if my mobile device is on a different IP address than the IP restriction enabled for my account?
No, both your mobile device and browser must be on the configured IP address. Smart Sign-in will not work otherwise.
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