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1 | 1 | --- |
2 | | -title: Test and Enable fails due to unrecognized Microsoft 365 User Email Address |
3 | | -description: Provides solution information for Test and Enable failures caused by unrecognized email addresses. |
4 | | -ms.date: 08/27/2025 |
| 2 | +title: Test And Enable Failed Because No User Was Found Error |
| 3 | +description: Explains how to resolve Test and Enable failures in Dataverse caused by unrecognized Microsoft 365 email addresses. |
| 4 | +ms.date: 09/05/2025 |
5 | 5 | ms.custom: sap:Email and Exchange Synchronization\Set up and configuration of server-side synchronization |
6 | 6 | author: debrau |
7 | 7 | ms.author: debrau |
| 8 | +ms.reviewer: debrau |
8 | 9 | --- |
9 | | -# Test and Enable fails due to unrecognized Microsoft 365 User Email Address |
| 10 | +# "Test and Enable failed because no user was found" error when configuring mailbox synchronization |
| 11 | + |
| 12 | +This article explains how to resolve the "Test and Enable failed because no user was found" error that occurs when you configure mailbox synchronization in Dataverse with Microsoft 365. |
10 | 13 |
|
11 | 14 | ## Symptoms |
12 | 15 |
|
13 | | -When attempting to perform Test and Enable on a mailbox in Dataverse, users may encounter the following error message: |
| 16 | +When you attempt to [test and enable a mailbox](/power-platform/admin/connect-exchange-online#test-the-configuration-of-mailboxes) in Dataverse, you might receive the following error message: |
14 | 17 |
|
15 | | ->Test and Enable failed because no user was found with the email address "<[email protected]>" in the Microsoft 365 tenant associated with this mailbox's Email Server Profile. Verify the user exists in [...] |
| 18 | +> Test and Enable failed because no user was found with the email address "`<[email protected]>`" in the Microsoft 365 tenant associated with this mailbox's Email Server Profile. Verify the user exists in [...] |
16 | 19 |
|
17 | 20 | ## Cause |
18 | 21 |
|
19 | | -This error typically occurs when: |
| 22 | +This error occurs if: |
20 | 23 |
|
21 | | -- The specified email address does not exist in the Microsoft 365 tenant linked to the mailbox's Email Server Profile. |
22 | | -- The email address is not properly configured as a User Principal Name (UPN), SMTP address, or Mail address on the user object. |
23 | | -- The mailbox belongs to a different Microsoft 365 tenant, and a Cross Tenant Email Server Profile has not been configured. |
| 24 | +- The specified email address doesn't exist in the Microsoft 365 tenant linked to the mailbox's email server profile. |
| 25 | +- The email address isn't properly configured as a User Principal Name (UPN), SMTP address, or mail address on the user object. |
| 26 | +- The mailbox belongs to a different Microsoft 365 tenant, and a cross-tenant email server profile isn't configured. |
24 | 27 |
|
25 | 28 | ## Resolution |
26 | 29 |
|
27 | | -**Step 1: Validate User Existence and Email Address Configuration** |
28 | | - |
29 | 30 | An administrator should verify that the user exists in the correct Microsoft 365 tenant and that the email address is properly configured. |
30 | 31 |
|
31 | | -To validate UPN, SMTP, or Mail address: |
| 32 | +To confirm the UPN, SMTP, or mail address for the user: |
32 | 33 |
|
33 | 34 | 1. Sign in to the Microsoft 365 Admin Center. |
34 | | -2. Navigate to **Users > Active Users**. |
35 | | -3. Search for the user using the email address in question. |
36 | | -4. Open the user profile and confirm the user has at least one email address matching the email address in the Dataverse mailbox record: |
37 | | - - User Principal Name (UPN) or Username matches the email address. |
38 | | - - In the **Mail** tab, click **Edit Exchange properties**. In **Manage mailboxes**, open the mailbox. On the **General** tab, confirm the **User ID** or the **Email addresses** properties contain the email address. |
39 | | - - **Note:** If a matching address is found in the **Email addresses**, click **Manage email address types** to confirm the address type is “SMTP”. |
40 | 35 |
|
41 | | -If the user exists in the same tenant as your Dataverse instance but does not have a matching UPN, SMTP, or Mail email address, update the Dataverse mailbox record to a valid email address for the user. |
| 36 | +2. Navigate to **Users** > **Active Users**. |
42 | 37 |
|
43 | | -If the user does not exist in the same tenant as your Dataverse instance, proceed to **Step 2**. |
| 38 | +3. Search for the user using the email address in question. |
| 39 | + |
| 40 | +4. Open the user profile and confirm the user has at least one email address matching the email address in the Dataverse mailbox record: |
44 | 41 |
|
45 | | -**Step 2: Configure Cross Tenant Email Server Profile** |
| 42 | + - **User Principal Name (UPN)** or username matches the email address. |
| 43 | + - Under the **Mail** tab, select **Edit Exchange properties**. In **Manage mailboxes**, open the mailbox. On the **General** tab, confirm the **User ID** or **Email addresses** fields contain the email address. |
46 | 44 |
|
47 | | -If the mailbox resides in a different Microsoft 365 tenant, you must configure a Cross Tenant Email Server Profile. |
| 45 | + > [!NOTE] |
| 46 | + > If a matching address is found in the **Email addresses**, select **Manage email address types** to confirm the address type is **SMTP**. |
48 | 47 |
|
49 | | -Refer to the following documentation: |
| 48 | +If the user exists in the same tenant as your Dataverse instance but doesn't have a matching UPN, SMTP, or mail address, update the Dataverse mailbox record to use a valid email address for the user. |
50 | 49 |
|
51 | | -[Configure cross-tenant synchronization](/power-platform/admin/connect-exchange-online-server-profile-oauth) |
| 50 | +If the user doesn't exist in the same tenant as your Dataverse instance, you should [configure a cross-tenant email server profile](/power-platform/admin/connect-exchange-online-server-profile-oauth). |
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