# \#mfa-sms **URL:** https://community.auth0.com/tag/mfa-sms/413.md [Latest](https://community.auth0.com/latest.md) · [Categories](https://community.auth0.com/categories.md) · [Tags](https://community.auth0.com/tags.md) --- ## [Avoiding Duplicate Phone Verification for Signup and MFA](https://community.auth0.com/t/avoiding-duplicate-phone-verification-for-signup-and-mfa/204595)
**Author:** [@Eugene.Kriuchkov](https://community.auth0.com/u/Eugene.Kriuchkov)\ **Replies:** 1\ **Last updated:** [October 23, 2026, 10:34pm UTC](https://community.auth0.com/t/avoiding-duplicate-phone-verification-for-signup-and-mfa/204595 "2026-10-23T22:34:49Z")
We collect the user’s phone number during signup using the Phone Number attribute configured on the database connection, and require phone verification as part of the registration process. We would also like to use the … --- ## [Is there a way to register or manage mobile number for SMS MFA using APIs](https://community.auth0.com/t/is-there-a-way-to-register-or-manage-mobile-number-for-sms-mfa-using-apis/202947)
**Author:** [@karuissobusy](https://community.auth0.com/u/karuissobusy)\ **Replies:** 1\ **Last updated:** [August 31, 2026, 8:13pm UTC](https://community.auth0.com/t/is-there-a-way-to-register-or-manage-mobile-number-for-sms-mfa-using-apis/202947 "2026-08-31T20:13:02Z")
We turned off user signup process in Auth0 and register our users using management API. This is really a business requirement as app is restricited from self-serve signup. And mobile number is not a unique value within … --- ## [How to implement MFA step-up when using Auth0.js SDK for authentication](https://community.auth0.com/t/how-to-implement-mfa-step-up-when-using-auth0-js-sdk-for-authentication/27722)
**Author:** [@daanporon](https://community.auth0.com/u/daanporon)\ **Replies:** 8\ **Last updated:** [October 23, 2025, 5:22am UTC](https://community.auth0.com/t/how-to-implement-mfa-step-up-when-using-auth0-js-sdk-for-authentication/27722 "2025-10-23T05:22:49Z")
Hi, We integrated a standard login procedure using Username-Password-Authentication via the auth0.js library (version 9.19.4) in our React application. Now for certain calls on our api we need to step up our authenticat… --- ## [Include MFA enrollment details in bulk user export](https://community.auth0.com/t/include-mfa-enrollment-details-in-bulk-user-export/185191)
**Author:** [@andrew-app](https://community.auth0.com/u/andrew-app)\ **Replies:** 1\ **Last updated:** [April 30, 2025, 4:18pm UTC](https://community.auth0.com/t/include-mfa-enrollment-details-in-bulk-user-export/185191 "2025-04-30T16:18:17Z")
Authentication method details are currently not included for users in bulk user export. This would be useful from a compliance standpoint eg. we need to see which users are registered with phone numbers outside our coun… --- ## [Disable MFA for some logins for a user](https://community.auth0.com/t/disable-mfa-for-some-logins-for-a-user/88513)
**Author:** [@rajivk](https://community.auth0.com/u/rajivk)\ **Replies:** 3\ **Last updated:** [November 18, 2024, 10:38pm UTC](https://community.auth0.com/t/disable-mfa-for-some-logins-for-a-user/88513 "2024-11-18T22:38:56Z")
On first login, we want the users to follow custom MFA(through redirection in login action). After that we want to enforce auth0 MFA. So when users login first time, we do not want Auth0 mfa to kick in. We have setup MFA… --- ## ["SMS is not supported by landline phone number" for a valid Norwegian mobile number](https://community.auth0.com/t/sms-is-not-supported-by-landline-phone-number-for-a-valid-norwegian-mobile-number/86573)
**Author:** [@tashi.wangdi](https://community.auth0.com/u/tashi.wangdi)\ **Replies:** 2\ **Last updated:** [August 1, 2024, 9:32pm UTC](https://community.auth0.com/t/sms-is-not-supported-by-landline-phone-number-for-a-valid-norwegian-mobile-number/86573 "2024-08-01T21:32:52Z")
When requesting the following url: https://.guardian.auth0.com/api/device-accounts/split-up-authenticator/sms-enroll we get the response: {“statusCode”:400,“error”:“Bad Request”,“message”:“SMS is not supported by land… --- ## [MFA authentication method missing in rule context](https://community.auth0.com/t/mfa-authentication-method-missing-in-rule-context/49218)
**Author:** [@mobilmacher](https://community.auth0.com/u/mobilmacher)\ **Replies:** 1\ **Last updated:** [September 5, 2020, 5:36pm UTC](https://community.auth0.com/t/mfa-authentication-method-missing-in-rule-context/49218 "2020-09-05T17:36:42Z")
I’m having trouble with a rule checking if a user completed MFA during their login. According to the docs, the ‘context.authentication’ array should contain the authentication methods a user has completed during their s… --- ## [Auth0 MFA using Azure Communication Service](https://community.auth0.com/t/auth0-mfa-using-azure-communication-service/92750)
**Author:** [@Philippe.Chevallier](https://community.auth0.com/u/Philippe.Chevallier)\ **Replies:** 3\ **Last updated:** [March 20, 2023, 8:38am UTC](https://community.auth0.com/t/auth0-mfa-using-azure-communication-service/92750 "2023-03-20T08:38:01Z")
Can we use Azure Communication Service as SMS provider for MFA (similar to what is available with AWS SNS), and if so, where can we get some documentation ? --- ## [MFA Challenge 'server\_error' 'Unauthorized'](https://community.auth0.com/t/mfa-challenge-server-error-unauthorized/79199)
**Author:** [@cam71101](https://community.auth0.com/u/cam71101)\ **Replies:** 6\ **Last updated:** [November 4, 2022, 2:06pm UTC](https://community.auth0.com/t/mfa-challenge-server-error-unauthorized/79199 "2022-11-04T14:06:39Z")
I have been trying to implement a custom MFA workflow in Auth0 using the details described on this page: https://auth0.com/docs/mfa/authenticate-with-ropg-and-mfa/enroll-challenge-sms-voice-authenticators 5 I have succe… --- ## [Why enroll in SMS if Email factor is enrolled](https://community.auth0.com/t/why-enroll-in-sms-if-email-factor-is-enrolled/92445)
**Author:** [@phi1ipp](https://community.auth0.com/u/phi1ipp)\ **Replies:** 1\ **Last updated:** [October 27, 2022, 6:29pm UTC](https://community.auth0.com/t/why-enroll-in-sms-if-email-factor-is-enrolled/92445 "2022-10-27T18:29:40Z")
Hi All, Going through the labs I didn’t quite catch MFA enrollment requirements. The scenario is: user was enrolled into SMS and Email when logging in they can select which factor to use we do MFA reset management das… --- ## [Stuck in 2FA screen forever](https://community.auth0.com/t/stuck-in-2fa-screen-forever/88163)
**Author:** [@sulav](https://community.auth0.com/u/sulav)\ **Replies:** 1\ **Last updated:** [August 10, 2022, 4:15pm UTC](https://community.auth0.com/t/stuck-in-2fa-screen-forever/88163 "2022-08-10T16:15:40Z")
When a user logs in to the application using some random email (i.e. the email is not yet registered as a user), my application sends an OTP in their email via Auth0. I have also enabled Phone SMS MFA, hence after enteri… --- ## [Resend the code to sms](https://community.auth0.com/t/resend-the-code-to-sms/87928)
**Author:** [@doannh3](https://community.auth0.com/u/doannh3)\ **Replies:** 5\ **Last updated:** [August 4, 2022, 9:07pm UTC](https://community.auth0.com/t/resend-the-code-to-sms/87928 "2022-08-04T21:07:48Z")
When I customize “Secure your account” (Verify your idetity) screen. In Auth0’s documentation there í a link to resend the code to sms. The Resend link doesn’t come up when trying to customizing UI: Is there any w… --- ## [Enforce sms as MFA on certain condition](https://community.auth0.com/t/enforce-sms-as-mfa-on-certain-condition/87894)
**Author:** [@rajivk](https://community.auth0.com/u/rajivk)\ **Replies:** 3\ **Last updated:** [August 3, 2022, 7:33pm UTC](https://community.auth0.com/t/enforce-sms-as-mfa-on-certain-condition/87894 "2022-08-03T19:33:07Z")
We have turned on SMS and OTP based MFA in out application. We want to enforce SMS MFA during login on some condition. I know we can enforce MFA through actions but it asks user to select any MFA method enabled for the t… --- ## [Enterprise MFA as add-ons](https://community.auth0.com/t/enterprise-mfa-as-add-ons/87225)
**Author:** [@maksym.bychok](https://community.auth0.com/u/maksym.bychok)\ **Replies:** 1\ **Last updated:** [July 20, 2022, 4:59pm UTC](https://community.auth0.com/t/enterprise-mfa-as-add-ons/87225 "2022-07-20T16:59:09Z")
Hi, we are going implement SMS MFA for our project. I found a lot of info that we have to upgrade subscription to Enterprise, but I found Pricing page where I read follow sentence Add-ons to fit your needs. So can I use … --- ## [Increase "maximum number of phone messages per hour"](https://community.auth0.com/t/increase-maximum-number-of-phone-messages-per-hour/86144)
**Author:** [@tal.sh](https://community.auth0.com/u/tal.sh)\ **Replies:** 4\ **Last updated:** [July 12, 2022, 9:52pm UTC](https://community.auth0.com/t/increase-maximum-number-of-phone-messages-per-hour/86144 "2022-07-12T21:52:50Z")
Hello, While testing our application in the staging phase, we required to log in multiple times. with SMS MFA installed (we are using AWS SNS to send the MFA messages), we sometimes getting the following error: “You h… --- ## [Switching between MFA's](https://community.auth0.com/t/switching-between-mfas/85294)
**Author:** [@sishwarya10](https://community.auth0.com/u/sishwarya10)\ **Replies:** 3\ **Last updated:** [June 30, 2022, 5:13pm UTC](https://community.auth0.com/t/switching-between-mfas/85294 "2022-06-30T17:13:47Z")
Hi Team, Is there any way to allow the user to switch between MFA’s after completing signup with one of the MFA’s. For example while signup let’s assume that the user enrolled in Google authenticator and after sometime… --- ## [MFA : Sending OTP via Whatsapp](https://community.auth0.com/t/mfa-sending-otp-via-whatsapp/83368)
**Author:** [@atul.kumar](https://community.auth0.com/u/atul.kumar)\ **Replies:** 1\ **Last updated:** [May 13, 2022, 7:40am UTC](https://community.auth0.com/t/mfa-sending-otp-via-whatsapp/83368 "2022-05-13T07:40:45Z")
Is there anyway I can send OTP via Whatsapp channel. I saw a post, but I need step by step details. --- ## [MFA: sms phone number options for the "new universal login pages"](https://community.auth0.com/t/mfa-sms-phone-number-options-for-the-new-universal-login-pages/81951)
**Author:** [@akberiqbal](https://community.auth0.com/u/akberiqbal)\ **Replies:** 1\ **Last updated:** [April 28, 2022, 5:49pm UTC](https://community.auth0.com/t/mfa-sms-phone-number-options-for-the-new-universal-login-pages/81951 "2022-04-28T17:49:08Z")
Is there a possibility to change the default country on the MFA-SMS enrollment prompt (for the new universal login flow)? can we restrict the list of countries also (for the new universal login flow)? I know that it is… --- ## [Can’t sign in to Auth0 admin dashboard as not receiving MFA code](https://community.auth0.com/t/can-t-sign-in-to-auth0-admin-dashboard-as-not-receiving-mfa-code/78270)
**Author:** [@lalit.rane](https://community.auth0.com/u/lalit.rane)\ **Replies:** 11\ **Last updated:** [February 23, 2022, 9:05am UTC](https://community.auth0.com/t/can-t-sign-in-to-auth0-admin-dashboard-as-not-receiving-mfa-code/78270 "2022-02-23T09:05:21Z")
Hi, I’m not sure if this is the right place for this request. I can’t contact support as I can’t sign in to my tenant admin account. I am having trouble getting into my dashboard. When I tried to log in it is asking to… --- ## [Custom UI to challenge MFA post login](https://community.auth0.com/t/custom-ui-to-challenge-mfa-post-login/76505)
**Author:** [@Beazo](https://community.auth0.com/u/Beazo)\ **Replies:** 1\ **Last updated:** [January 19, 2022, 11:16pm UTC](https://community.auth0.com/t/custom-ui-to-challenge-mfa-post-login/76505 "2022-01-19T23:16:25Z")
Hey, I’ve set up MFA using universal login, I’m able to enroll and challenge the users MFA via the out of the box UI when logging into the application. However, I’m unsure how I would challenge a user after they’ve log… --- ## [Format masked characters in phone number](https://community.auth0.com/t/format-masked-characters-in-phone-number/76424)
**Author:** [@gagan.yadav](https://community.auth0.com/u/gagan.yadav)\ **Replies:** 2\ **Last updated:** [January 15, 2022, 6:04am UTC](https://community.auth0.com/t/format-masked-characters-in-phone-number/76424 "2022-01-15T06:04:51Z")
Hi, I have customized my MFA login page and by following MFA theme language I have also customized the success message in case of sms sent like following: successMessages: { smsSent: 'Enter the 6-digit verification cod… --- ## [Custom 2FA SMS code generation + validation](https://community.auth0.com/t/custom-2fa-sms-code-generation-validation/71853)
**Author:** [@aaron.craig](https://community.auth0.com/u/aaron.craig)\ **Replies:** 1\ **Last updated:** [October 22, 2021, 11:02am UTC](https://community.auth0.com/t/custom-2fa-sms-code-generation-validation/71853 "2021-10-22T11:02:35Z")
I’m evaluating the free/demo tier of Auth0 to see if it fits our needs. We would like to use two-factor authentication via SMS. There is documentation explaining how you can customise how the SMS is sent to the user: … --- ## [Ability to select the default MFA factor](https://community.auth0.com/t/ability-to-select-the-default-mfa-factor/62965)
**Author:** [@alexs333](https://community.auth0.com/u/alexs333)\ **Replies:** 3\ **Last updated:** [May 19, 2021, 11:02am UTC](https://community.auth0.com/t/ability-to-select-the-default-mfa-factor/62965 "2021-05-19T11:02:15Z")
Hi, We have enabled MFA with 2 factors: One-time password and SMS. Based on our user base, we would like to default the users to SMS during the enrollment process (it seems like out of the box it defaults to a One-time… --- ## [Setup different MFA options for different applications under same account](https://community.auth0.com/t/setup-different-mfa-options-for-different-applications-under-same-account/57262)
**Author:** [@zliangs](https://community.auth0.com/u/zliangs)\ **Replies:** 3\ **Last updated:** [March 9, 2021, 11:54am UTC](https://community.auth0.com/t/setup-different-mfa-options-for-different-applications-under-same-account/57262 "2021-03-09T11:54:13Z")
Hi, I have 2 applications under same account (2 client ids) for application 1, I only want SMS for MFA for application 2, I want push notification and SMS how can i set up them? Plus: in \[Dashboard \> Security \> M… --- ## [Can't sign in to Auth0 admin dashboard as not receiving SMS MFA code](https://community.auth0.com/t/cant-sign-in-to-auth0-admin-dashboard-as-not-receiving-sms-mfa-code/58325)
**Author:** [@swatt](https://community.auth0.com/u/swatt)\ **Replies:** 3\ **Last updated:** [February 24, 2021, 1:06pm UTC](https://community.auth0.com/t/cant-sign-in-to-auth0-admin-dashboard-as-not-receiving-sms-mfa-code/58325 "2021-02-24T13:06:48Z")
I’m not sure where else to post this. I can’t contact support as I can’t sign in to my dashboard account. I have been signing in with the same phone number with MFA for at least a couple of years. Today it is no longer … --- ## ["We could not send the SMS. Please try the recovery code" during MFA authentication](https://community.auth0.com/t/we-could-not-send-the-sms-please-try-the-recovery-code-during-mfa-authentication/51699)
**Author:** [@Sargent\_D](https://community.auth0.com/u/Sargent_D)\ **Replies:** 2\ **Last updated:** [November 9, 2020, 9:30pm UTC](https://community.auth0.com/t/we-could-not-send-the-sms-please-try-the-recovery-code-during-mfa-authentication/51699 "2020-11-09T21:30:04Z")
When users login to my application, every so often they report receiving an error as such: “We could not send the SMS. Please try the recovery code”. I have checked the Auth0 logs but there are no errors there, the logs … --- ## [SMS MFA expiry date and customization](https://community.auth0.com/t/sms-mfa-expiry-date-and-customization/50602)
**Author:** [@eric.hu](https://community.auth0.com/u/eric.hu)\ **Replies:** 3\ **Last updated:** [September 28, 2020, 9:58pm UTC](https://community.auth0.com/t/sms-mfa-expiry-date-and-customization/50602 "2020-09-28T21:58:35Z")
Hello, I’m currently configuring MFA SMS with Twilio as SMS provider and I was looking for two things: a way to customize code expiry date what is the default time limit of a code ? Thank you --- ## [Issue re-enrol user after reset MFA](https://community.auth0.com/t/issue-re-enrol-user-after-reset-mfa/39694)
**Author:** [@santo](https://community.auth0.com/u/santo)\ **Replies:** 5\ **Last updated:** [April 8, 2020, 1:40pm UTC](https://community.auth0.com/t/issue-re-enrol-user-after-reset-mfa/39694 "2020-04-08T13:40:32Z")
Hi, I’m getting issue when trying to re-enrol user MFA after resetting his/her MFA. It works when re-enrolling the user into authenticator OTP but it keeps on throwing the following error message when I tried with SMS … --- ## [MFA w. SMS number definition](https://community.auth0.com/t/mfa-w-sms-number-definition/21922)
**Author:** [@arag0n](https://community.auth0.com/u/arag0n)\ **Replies:** 2\ **Last updated:** [March 1, 2019, 8:22am UTC](https://community.auth0.com/t/mfa-w-sms-number-definition/21922 "2019-03-01T08:22:30Z")
Is there a way to define or feed the mobile number of a user to be used in an MFA SMS scenario? Our requirements include that the mobile number of the user is defined at account creation time and not asked to the end-us… --- ## [MFA with SMS without having user download an app from app store?](https://community.auth0.com/t/mfa-with-sms-without-having-user-download-an-app-from-app-store/7935)
**Author:** [@bradflyon](https://community.auth0.com/u/bradflyon)\ **Replies:** 0\ **Last updated:** [August 23, 2017, 2:08am UTC](https://community.auth0.com/t/mfa-with-sms-without-having-user-download-an-app-from-app-store/7935 "2017-08-23T02:08:13Z")
Is it possible to enable MFA using SMS without the user having to download the guardian or any other app? I see that you can customize the Guardian Multifactor page but wasn’t sure if that was just displayed in the mobi… [Next page](https://community.auth0.com/tag/mfa-sms/413.md?match_all_tags=true&page=1&tags%5B%5D=mfa-sms)