SignUpButton fails to authenticate user if Facebook account was previously linked

Preliminary Checks

I have reviewed the documentation: https://clerk.com/docs
I have searched for existing issues: https://github.com/clerk/javascript/issues
I have not already reached out to Clerk support via email or Discord (if you have, no need to open an issue here)
This issue is not a question, general help request, or anything other than a bug report directly related to Clerk. Please ask questions in our Discord community: https://clerk.com/discord.

Reproduction

https://app.replay.io/recording/localhost3000--a6a7a2fd-696d-43ef-b216-ce4c9f3114df?commentId=&focusWindow=eyJiZWdpbiI6eyJwb2ludCI6IjAiLCJ0aW1lIjowfSwiZW5kIjp7InBvaW50IjoiNTg0MTMzMzk2NjUwOTU4NTM2MjQwNzE2NDEzNTYwNDIyNCIsInRpbWUiOjM2OTB9fQ%253D%253D&point=324518553658633099732480646185098&primaryPanel=tour&secondaryPanel=console&time=133&viewMode=non-dev

Publishable key

pk_test_Z2xvd2luZy1iYXQtOTguY2xlcmsuYWNjb3VudHMuZGV2JA

Description

Steps to reproduce:

Use <SignUpButton mode="modal">
Select Facebook:

Make sure you had already signed-up using Facebook (so this is conceptually a sign-in really) and select Continue:

Expected behavior:

The user is taken back to the site and is now logged-in.

Actual behavior:

The user is taken back to the site but is not logged-in.

The URL is http://localhost:3000/#/sso-callback and these are the requests:

Everything works fine if I use <SignInButton> instead, or if I select Already have an account? [Sign in] in the sign-up modal (before selecting Facebook):

In those cases, these are the requests:

The one I highlighted seems to be the one making auth work. And the final URL is http://localhost:3000/ (no /#/sso-callback).

I'm not using either of: NEXT_PUBLIC_CLERK_AFTER_SIGN_IN_URL, NEXT_PUBLIC_CLERK_AFTER_SIGN_UP_URL, forceRedirectUrl, signInForceRedirectUrl, signUpForceRedirectUrl.

My reasoning is that since if I first select Already have an account? [Sign in], everything works, then this is probably a bug in SignUpButton.

Thanks

Environment

System:
    OS: macOS 15.2
    CPU: (11) arm64 Apple M3 Pro
    Memory: 77.48 MB / 36.00 GB
    Shell: 3.7.1 - /opt/homebrew/bin/fish
  Binaries:
    Node: 22.12.0 - /usr/local/bin/node
    Yarn: 1.22.22 - /opt/homebrew/bin/yarn
    npm: 10.9.0 - /usr/local/bin/npm
    bun: 1.1.39 - ~/.bun/bin/bun
    Watchman: 2024.12.02.00 - /opt/homebrew/bin/watchman
  Browsers:
    Brave Browser: 131.1.73.101
    Chrome: 131.0.6778.140
    Chrome Canary: 133.0.6901.0
    Edge: 130.0.2849.56
    Safari: 18.2
    Safari Technology Preview: 18.2
  npmPackages:
    @arcjet/next: ^1.0.0-alpha.34 => 1.0.0-alpha.34
    @babel/core: ^7.26.0 => 7.26.0
    @clerk/nextjs: ^6.9.3 => 6.9.3
    @clerk/themes: ^2.2.2 => 2.2.2
    @mailchimp/mailchimp_marketing: ^3.0.80 => 3.0.80
    @mantine/carousel: ^7.15.1 => 7.15.1
    @mantine/colors-generator: ^7.15.1 => 7.15.1
    @mantine/core: ^7.15.1 => 7.15.1
    @mantine/dates: ^7.15.1 => 7.15.1
    @mantine/form: ^7.15.1 => 7.15.1
    @mantine/hooks: ^7.15.1 => 7.15.1
    @mantine/modals: ^7.15.1 => 7.15.1
    @mantine/notifications: ^7.15.1 => 7.15.1
    @mantine/nprogress: ^7.15.1 => 7.15.1
    @next/bundle-analyzer: 15.1.0 => 15.1.0
    @portabletext/react: ^3.2.0 => 3.2.0
    @portabletext/to-html: ^2.0.13 => 2.0.13
    @portabletext/types: ^2.0.13 => 2.0.13
    @react-email/components: ^0.0.31 => 0.0.31
    @sanity/image-url: ^1.1.0 => 1.1.0
    @sanity/webhook: ^4.0.4 => 4.0.4
    @sentry/nextjs: ^8.46.0 => 8.46.0
    @t3-oss/env-nextjs: ^0.11.1 => 0.11.1
    @tabler/icons-react: ^3.26.0 => 3.26.0
    @talkjs/react: ^0.1.11 => 0.1.11
    @total-typescript/ts-reset: ^0.6.1 => 0.6.1
    @types/async: ^3.2.24 => 3.2.24
    @types/bun: ^1.1.14 => 1.1.14
    @types/jsdom: ^21.1.7 => 21.1.7
    @types/jsonwebtoken: ^9.0.7 => 9.0.7
    @types/lodash: ^4.17.13 => 4.17.13
    @types/mailchimp__mailchimp_marketing: ^3.0.20 => 3.0.20
    @types/node: ^22.10.2 => 22.10.2
    @types/superagent: ^8.1.9 => 8.1.9
    @vercel/analytics: ^1.4.1 => 1.4.1
    @vercel/kv: ^3.0.0 => 3.0.0
    @vercel/postgres: ^0.10.0 => 0.10.0
    add-to-calendar-button: ^2.7.3 => 2.7.3
    async: ^3.2.6 => 3.2.6
    babel-loader: ^9.2.1 => 9.2.1
    babel-plugin-react-compiler: ^19.0.0-beta-201e55d-20241215 => 19.0.0-beta-201e55d-20241215
    change-case: ^5.4.4 => 5.4.4
    chroma-js: ^3.1.2 => 3.1.2
    clsx: ^2.1.1 => 2.1.1
    conditional-wrap: ^1.0.2 => 1.0.2
    dayjs: ^1.11.13 => 1.11.13
    drizzle-kit: ^0.30.1 => 0.30.1
    drizzle-orm: ^0.38.2 => 0.38.2
    embla-carousel-autoplay: 7.1.0 => 7.1.0
    embla-carousel-react: 7.1.0 => 7.1.0
    eslint-plugin-deprecated-props: ^0.1.3 => 0.1.3
    eslint-plugin-deprecation: ^3.0.0 => 3.0.0
    eslint-plugin-react-compiler: ^19.0.0-beta-201e55d-20241215 => 19.0.0-beta-201e55d-20241215
    jiti: ^2.4.1 => 2.4.1
    jsdom: ^25.0.1 => 25.0.1
    jsonwebtoken: ^9.0.2 => 9.0.2
    lodash: ^4.17.21 => 4.17.21
    mantine-datatable: 7.14.5 => 7.14.5
    next: ^15.1.0 => 15.1.0
    next-sanity: ^9.8.27 => 9.8.27
    next-view-transitions: ^0.3.4 => 0.3.4
    pg: ^8.13.1 => 8.13.1
    postcss: ^8.4.49 => 8.4.49
    postcss-preset-mantine: ^1.17.0 => 1.17.0
    postcss-simple-vars: ^7.0.1 => 7.0.1
    prettier: ^3.4.2 => 3.4.2
    react: ^19.0.0 => 19.0.0
    react-canvas-confetti: ^2.0.7 => 2.0.7
    react-dom: ^19.0.0 => 19.0.0
    react-email: ^3.0.4 => 3.0.4
    react-geolocated: ^4.2.0 => 4.3.0
    react-google-autocomplete: ^2.7.3 => 2.7.3
    react-google-places-autocomplete: ^4.1.0 => 4.1.0
    remix-params-helper: ^0.5.1 => 0.5.1
    resend: ^4.0.1 => 4.0.1
    server-only: ^0.0.1 => 0.0.1
    sqids: ^0.3.0 => 0.3.0
    stripe: ^17.4.0 => 17.4.0
    superjson: ^2.2.2 => 2.2.2
    svix: ^1.44.0 => 1.44.0
    swr: ^2.2.5 => 2.2.5
    talkjs: ^0.31.0 => 0.31.0
    type-fest: ^4.30.2 => 4.30.2
    types-react:  19.0.0-rc.1
    types-react-dom:  19.0.0-rc.1
    typescript: ^5.7.2 => 5.7.2
    typescript-plugin-css-modules: ^5.1.0 => 5.1.0
    vercel: ^39.2.2 => 39.2.2
    zod: ^3.24.1 => 3.24.1

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This is still an issue.

@gabrielmaldi

Hey @gabrielmaldi this should have been resolved in #4961

@alexcarpenter

Hi, @alexcarpenter. Just tested this and it didn't work for me. From Facebook I get redirected to http://localhost:3000/sign-up#/sso-callback?sign_up_force_redirect_url=http%3A%2F%2Flocalhost%3A3000%2F&sign_in_force_redirect_url=http%3A%2F%2Flocalhost%3A3000%2F without having an active session. Thank you.

@gabrielmaldi

@gabrielmaldi can you provide a minimal repo of your setup that includes the issue for us to help debug.

@gabrielmaldi

@gabrielmaldi Also would you mind confirming if this is only with Facebook login? Does the issue happen if you use Google or Microsoft?

@dstaley

@dstaley, yes, just tested with Google and got the same result: I get redirected to http://localhost:3000/sign-up#/sso-callback (a route/page I don't have, so 404).

If I use <SignInButton> (instead of <SignUpButton>), and select either Facebook or Google, everything works fine.

@alexcarpenter, I won't have enough time to produce a minimal repo for a while, sorry.

Thanks!

@gabrielmaldi

@gabrielmaldi ah ok, I am assuming you don't have a mounted <SignUp /> component on your website somewhere?

@alexcarpenter

@alexcarpenter, yes, we have both a login and a signup button in the header:

You can repro this issue in: https://beta.ad-in.me
First sign-up using Facebook (or Google), then sign-out, hit sign up and select Facebook, use the same Facebook account, error. Using sign-in does work.

Thanks!

@gabrielmaldi

@gabrielmaldi thanks for the link. The <SignUpButton mode="modal" /> modal mode usage requires you to still mount a <SignUp /> component somewhere on your site to handle the sso-callback redirect.

@alexcarpenter

@alexcarpenter, adding a /sign-up route with a <SignUp /> component fixed it, thanks! Could it be that this was a recent change? Previously, I had everything working without this. Anyway, closing the issue, thanks again.

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.

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SignUpButton fails to authenticate user if Facebook account was previously linked #4803

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SignUpButton fails to authenticate user if Facebook account was previously linked #4803

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Preliminary Checks

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Description

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clerk-cookie commented on Jan 19, 2025

gabrielmaldi commented on Jan 19, 2025

alexcarpenter commented on Jan 29, 2025

gabrielmaldi commented on Jan 29, 2025

alexcarpenter commented on Jan 29, 2025

dstaley commented on Jan 29, 2025

gabrielmaldi commented on Jan 29, 2025

alexcarpenter commented on Feb 3, 2025

gabrielmaldi commented on Feb 3, 2025

alexcarpenter commented on Feb 3, 2025

gabrielmaldi commented on Feb 3, 2025

github-actions commented on Feb 4, 2026

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