Why can't our app access personal Microsoft account calendars outside the accounts of the tenant, despite all permissions, while it works fine with Tenant accounts? Are there specific limitations, and how can they be resolved?

Question

Why can't our app access personal Microsoft account calendars outside the accounts of the tenant, despite all permissions, while it works fine with Tenant accounts? Are there specific limitations, and how can they be resolved?

Anil Reddy 0

Request Id: eb2eed6e-7522-45e5-b50c-5c97d80b5600 Correlation Id: b5ede7dc-443b-419b-b77c-b70470af55d2 Timestamp: 2025-04-24T09:21:12Z Message: AADSTS50020: User account 'alr*ddy.fnelck*@outlook.com' from identity provider 'live.com' does not exist in tenant '****@Test.com' and cannot access the application 'e66a5095-19c8-40d9-9762-d30a38*****8'(Test) in that tenant. The account needs to be added as an external user in the tenant first. Sign out and sign in again with a different Azure Active Directory user account.

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Answer 1

Navya 20,490 Microsoft External Staff Moderator

HI @Anil Reddy

I understand you're encountering the error AADSTS50020: User account does not exist in tenant when trying to access the application using personal accounts.

This error can occur in several scenarios. Please review the steps below to troubleshoot:

1.Check the app registration's supported account type If your app registration is set to single-tenant, users from other directories or identity providers will not be able to sign in. Ensure the app registration is configured as multi-tenant if you want to allow external users.

2.Use the correct authentication endpoint If you're using https://login.microsoftonline.com/<YourTenantNameOrID>, only users from that tenant can access the app. For multi-tenant apps or apps that support personal Microsoft accounts, use the common endpoint: https://login.microsoftonline.com/common

3.Check if the app requires user assignment If your enterprise application requires user assignment, users not explicitly assigned will receive the AADSTS50020 error. Make sure users are assigned access to the application either individually or via a group.

4.Ensure the user is signed into the correct tenant/account Users might access the app via a direct link or through https://myapps.microsoft.com. In some cases, users may have an active session with a different account than intended (e.g., signed in with an organizational account instead of a personal account or vice versa). Check the User account and Identity provider values in the error message. Try signing out and signing in again using a different browser or an incognito/private session.

Hope this helps. Do let us know if you any further queries.

If this answers your query, do click Accept Answer and Yes for was this answer helpful. And, if you have any further query do let us know.

Anil Reddy 0 Reputation points

2025-04-28T14:19:27.41+00:00

Hello Navya, Thankyou for the revert, but still I see the same error even we try with the endpoint: https://login.microsoftonline.com/common
Navya 20,490 Reputation points Microsoft External Staff Moderator

2025-04-29T18:32:02.66+00:00

Hi Anil Reddy

Can we connect offline to discuss this further? Please send your email address, time zone, and availability for teams call in a private messages.
Anil Reddy 0 Reputation points

2025-04-30T10:57:30.52+00:00

Hi Navya, thanks for your response. I couldn’t find a way to send a private message here. Could you please let me know how I can share my availability and contact details securely with you?
Anil Reddy 0 Reputation points

2025-04-30T10:58:38.4366667+00:00

a.reddy@xxxxxxcom and Available tomorrow from 11:00 AM IST onwards to 8:00 PM IST
Anil Reddy 0 Reputation points

2025-04-30T11:00:23.29+00:00

Prefix of the email a.reddy
Navya 20,490 Reputation points Microsoft External Staff Moderator

2025-04-30T18:23:28.3833333+00:00

HI @Anil Reddy

You can find the private messages under your ask/question. Thank you for sharing your email ID and availability.
Anil Reddy 0 Reputation points

2025-05-19T06:00:44.6066667+00:00

Hello Navya, Thank you for your reference the Issue is still persist and can we connect offline I shared the Private message in request of your assistance Please check and do the needful at the earliest.

I am encountering the same issue again and again Please help me further thank you
Anil Reddy 0 Reputation points

2025-05-29T13:15:05.2566667+00:00

Hello Navya,

I hope this message finds you well...!
Please let me know when we can able to connect with you...! Here is the Issue we are facing
1. We are unable to connect to our outlook calendar to our application which is of same tenant.
2. We are unable to connect to other outlook calendar to our application as well.
Please look into this and share with us the detail steps to work with and provide SPOC to discuss further issue in Microsoft.

It will be highly appreciated if we receive a solution at the earliest.

Thank you.
Anil Reddy 0 Reputation points

2025-06-23T16:04:44.25+00:00
Hello Navya,

Please find the issues we are facing from since 1.5 Years , can you look into it and do t he needful.

Here is the Issue we are facing

We are unable to connect to our outlook calendar to our application which is of same tenant.

We are unable to connect to other outlook calendar to our application as well.

I hope you have gone through the request in previous email. It will be highly appreciated if you get in touch and provide us a solution.
As previously informed I will be available from Monday to Friday @12:00 PM to 2:00 PM IST or 4:00 PM to 6:00 PM IST for the call.

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Why can't our app access personal Microsoft account calendars outside the accounts of the tenant, despite all permissions, while it works fine with Tenant accounts? Are there specific limitations, and how can they be resolved?

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