diff --git a/docs/microsoft-365-developer-program-faq.yml b/docs/microsoft-365-developer-program-faq.yml
index f4ccb97..957e7d3 100644
--- a/docs/microsoft-365-developer-program-faq.yml
+++ b/docs/microsoft-365-developer-program-faq.yml
@@ -35,6 +35,9 @@ sections:
           - **Work account** (issued by an admin for business use) - Provides access to all small, medium, and enterprise business-level Microsoft cloud services, such as Azure, Microsoft Intune, or Microsoft 365. When you sign up to one of these services as an organization, a cloud-based directory is automatically provisioned in Microsoft Entra ID to represent your organization. For more information, see [Manage your Microsoft Entra directory](/azure/active-directory/active-directory-administer).
           - **Visual Studio ID** (created for your Visual Studio Professional or Enterprise subscriptions) - We recommend that you use this option to join the developer program from within the Visual Studio Gallery to get the full benefits as a Visual Studio subscriber. You can also link your Visual Studio subscription to your Microsoft 365 developer sandbox during the setup process.
           
+           > [!NOTE]
+           > - Email accounts with the **\*.onmicrosoft.com** domain are not supported. If you sign in with an **\*.onmicrosoft.com** email address, you'll get an error and will need to sign in with a different account.
+           
       - question: |
           How many Microsoft 365 Developer Program accounts can I create?
         answer: |
diff --git a/docs/microsoft-365-developer-program.md b/docs/microsoft-365-developer-program.md
index 86600a9..c90c5ca 100644
--- a/docs/microsoft-365-developer-program.md
+++ b/docs/microsoft-365-developer-program.md
@@ -20,7 +20,8 @@ Do you have a Visual Studio Pro or Enterprise subscription? If so, you can take
 2. In the upper-right corner, choose **Sign in** to sign in with your Microsoft account or Microsoft Entra-enabled email.
 
     > [!NOTE]
-    > Remember the account that you sign in with. You'll sign in to the [Developer Program dashboard](https://developer.microsoft.com/en-us/microsoft-365/profile) with this account. This account is different than the admin ID that you'll use for your Microsoft 365 developer subscription.
+    > - Email accounts with the **\*.onmicrosoft.com** domain are not supported. If you sign in with an **\*.onmicrosoft.com** email address, you'll get an error and will need to sign in with a different account.
+    > - Remember the account that you sign in with. You'll sign in to the [Developer Program dashboard](https://developer.microsoft.com/en-us/microsoft-365/profile) with this account. This account is different than the admin ID that you'll use for your Microsoft 365 developer subscription.
 
 3. After signing in, choose **Join now**.