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AADSTS50020 Severity: High

User account from identity provider does not exist in tenant

The classic multi-org login error: your account from another identity provider (personal or another tenant) does not exist in the tenant you are signing into.

Last verified:

Affected systems

windows macos ios android web

Symptoms

  • AADSTS50020 with the hint about 'identity provider'
  • Message 'User account from identity provider X does not exist in tenant Y'
  • Clicking a meeting link from a different organization fails
  • Guest invite leads to the error page

Possible causes

  • You sign in with a personal Microsoft account into a corporate tenant
  • You were invited as a guest, but the guest account is not yet activated
  • Your email address changed, the old reference in the foreign tenant is dead
  • Tenant admin removed your guest account

Solutions

1.Sign in with the correct account

  1. Check the exact email address the organizer used in the invite.

  2. If you use personal (live.com / outlook.com) and work with the same address, explicitly pick 'Work account' on the MS login screen.

  3. If the picker does not appear, sign in from a private browser window to avoid stale cookies.

2.Request a fresh guest invite

  1. Ask the person who invited you to confirm you are listed as a guest in the foreign tenant.

  2. If not, request a new invite, accept it from your inbox, complete the prompts.

  3. Only then will sign-in to the foreign tenant succeed.

3.Verify in a browser

  1. Open https://myapps.microsoft.com in a private window with the account in question.

  2. If the foreign tenant does not show in the list, your account really has no access there.

  3. Send the correlation ID from the error page to the IT of the foreign organization.

AADSTS50020 is the most common multi-org pitfall. Anyone who works for customers across tenants hits it regularly. The fix is almost always a combination of correct account choice and clean guest registration.

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