Compliance Problems

Fix Office 365 Management API Token Tenant Not Found Error

Steve K Sep 28, 2026 869 views

Question details

An application successfully obtains an access token for the Office 365 Management Activity API under an Exchange Foundation License, but subsequent audit-log requests fail with a tenant-not-found message.

How to Fix Office 365 Management API Tenant Not Found Error

Product: Microsoft Entra ID / Office 365
Device & OS: not provided
Scenario: Attempting to retrieve audit logs using the Office 365 Management Activity API with limited tenant licensing.
Observed behavior: The system grants an access token without issue, but the actual audit-log requests fail with a tenant-not-found error message due to unavailable Unified Audit Log ingestion.

Before you start

Ensure you have global administrator or security administrator privileges in your Microsoft 365 tenant to verify licensing and modify Unified Audit Log settings.

Solution 1Recommended

Enable Unified Audit Log Ingestion

Turn on audit logging in the Microsoft Purview compliance portal to resolve the tenant-not-found error when querying the API.

A successful token request merely validates authentication. If the Unified Audit Log ingestion is disabled, the tenant cannot be found by the audit service, resulting in failure.

Sign in to Microsoft Purview

Go to the Microsoft Purview compliance portal and sign in with your administrator credentials.

Navigate to the Audit section

In the left navigation pane, select 'Audit' under the Solutions menu.

Start recording activity

If auditing is not enabled, you will see a banner prompting you to 'Start recording user and admin activity'. Click this banner to enable Unified Audit Log ingestion.

Processing Time: It can take up to 60 minutes for the Unified Audit Log to start recording events after being enabled. Retest your API request after this period.

Solution 2

Verify API Permissions and Licensing

Check that your application has the correct permissions in Microsoft Entra ID and that your tenant licensing covers the requested activity data.

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Frequently Asked Questions

Why did I receive an API token if my tenant isn't licensed properly?

A successful access token request only verifies your authentication credentials with Microsoft Entra ID. It does not validate whether Unified Audit Log ingestion is enabled or if the tenant holds the required service plans.

How do I fix the tenant-not-found error when querying the Management Activity API?

This error typically means Unified Audit Log ingestion is turned off for your tenant. You can resolve it by navigating to the Microsoft Purview compliance portal and enabling audit logging.

Does the Exchange Foundation License cover Office 365 Management Activity API usage?

The Exchange Foundation License provides limited capabilities. Depending on the specific audit logs and activity data your application requests, you may need a higher-tier Microsoft 365 license plan.

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