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Sign-in & Login Problems

How to Fix SharePoint and Teams Sign-In Error AADSTS90072

Maira MehtabMaira Mehtab Sep 24, 2026 871 views

Question details

The user is unable to sign into Microsoft SharePoint or Teams and receives the error code AADSTS90072.

Product
Microsoft SharePoint and Microsoft Teams
Device & OS
not provided
Scenario
Attempting to access a company or school SharePoint site or Teams tenant.
Observed behavior
The sign-in process is blocked with error AADSTS90072, which happens because a personal Microsoft account (e.g., live.com) is used to access an organizational tenant where that specific identity does not exist.
Before you start

Verify that you have the correct login credentials provided by your organization (work or school email address) rather than your personal Microsoft account details.

Solution 1Recommended

Switch to a Work or School Account

Ensure you are logging in with an organizational identity rather than a personal Microsoft account, as enterprise tenants restrict personal emails by default.

Error AADSTS90072 specifically flags an identity mismatch. It means the system recognizes your credentials as a personal account (like @outlook.com or @live.com), but the SharePoint site or Teams tenant requires a corporate or educational account.

1
Sign out of your current account

Click on your profile picture in the top right corner of the Teams or SharePoint interface and select 'Sign out'.

2
Select the correct account type

On the sign-in screen, choose 'Work or school account' instead of 'Personal account'.

3
Enter organizational credentials

Type the exact email address and password provided by your company or school administrator, then complete any required Multi-Factor Authentication (MFA).

Guest Access Exception: If you are an external contractor expected to use your personal email, you must wait for the tenant administrator to explicitly invite you as a Guest and approve your identity.
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Frequently Asked Questions

What exactly does error code AADSTS90072 mean?

This error code indicates an identity mismatch. It means the account you are trying to use (usually a personal account) does not exist in the specific Azure Active Directory (AAD) tenant associated with the SharePoint site or Teams environment you are trying to access.

Can I use my personal Microsoft account for a company Teams meeting?

You can join a Teams meeting as a guest using a personal account if the organization's IT administrator has enabled external guest access. If it is disabled, you must use a provisioned work account or join anonymously via the web browser if permitted.

Why can I access my emails but get this error in SharePoint?

Your personal or previous organization's credentials might be cached in your browser or Windows Credential Manager. The system automatically tries to pass these cached credentials to SharePoint, causing a rejection. Clearing your browser cache or using an Incognito window usually resolves this.

How do I clear the cached credentials causing this error on Windows?

Open the Start menu, search for 'Credential Manager', and click on 'Windows Credentials'. Look for any saved credentials related to MicrosoftOffice or Teams, select them, and click 'Remove'. Afterward, restart your PC and try signing in again.