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MS-102 Exam - Question 53


You have a Microsoft 365 subscription.

You need to add additional onmicrosoft.com domains to the subscription. The additional domains must be assignable as email addresses for users.

What is the maximum number of onmicrosoft.com domains the subscription can contain?

Show Answer
Correct Answer: C

In a Microsoft 365 subscription, you can add a maximum of five onmicrosoft.com domains. These domains can be assignable as email addresses for users. This is the maximum limit set for onmicrosoft.com domains in a single subscription.

Discussion

16 comments
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nsotis28
Aug 27, 2023

i created 5 "onMicrosoft" domains and added all of them as additional email address. Also i received a test email on all of them so i'll select 5 Correct answer C

TheMCT
Jan 31, 2024

Correct Answer: C This domain can't be removed after it's added. Make sure the spelling is correct before you add the domain, as you can only have ‎5‎ total ‎onmicrosoft.com‎ domains.

AlecksOption: C
Nov 1, 2023

C is correct: "You are limited a total of five onmicrosoft.com domains in your Microsoft 365 environment. Once they are added, they cannot be removed." https://learn.microsoft.com/en-us/microsoft-365/admin/setup/add-or-replace-your-onmicrosoftcom-domain?view=o365-worldwide

moshkoshbgoshOption: A
Aug 15, 2023

The wording here could be misleading... while 5 is the maximum number of onmicrosoft.com domains that can be added, the questions states "The additional domains must be assignable as email addresses for users" which means we can only have one active... so depending on how you interpret the question it could go either way...

CasticodOption: C
Aug 23, 2023

5 domains https://learn.microsoft.com/en-us/microsoft-365/admin/setup/domains-faq?view=o365-worldwide#why-do-i-have-an--onmicrosoft-com--domain

TjornoOption: C
Sep 29, 2023

Only 5 onmicrosoft domains are possible

Casticod
Aug 21, 2023

I also don't understand the question, because it says to assign email addresses, that means that aliases count. I only hope that the question does not touch me, but if it does, I would put 5

santi32Option: A
Sep 26, 2023

Every Microsoft 365 tenant comes with one default onmicrosoft.com domain. However, you cannot add additional onmicrosoft.com domains to the subscription. The primary purpose of the onmicrosoft.com domain is to allow the tenant to be functional (for email, for example) even if there's no custom domain associated. So, the answer is: A. 1

TonyManeroOption: C
Dec 19, 2023

In Microsoft documentation is specified max 5 onmicrosoft.com

Subzerofrostbyt
Nov 21, 2024

In Microsoft 365, the onmicrosoft.com domain is automatically created when you set up your subscription. However, Microsoft 365 subscriptions allow only one onmicrosoft.com domain per tenant.

martin_salan07Option: C
Sep 28, 2023

https://learn.microsoft.com/pt-BR/microsoft-365/admin/setup/add-or-replace-your-onmicrosoftcom-domain?view=o365-worldwide&WT.mc_id=365AdminCSH_inproduct

sherifhamedOption: C
Sep 30, 2023

The correct answer is C. 5. According to the first web search result1, you can add additional onmicrosoft.com domains to your Microsoft 365 subscription, but you are limited to a total of five onmicrosoft.com domains in your Microsoft 365 environment. Once they are added, they cannot be removed. You can use these domains as email addresses for your users, as well as for other services such as SharePoint and Teams.

Amir1909
Feb 5, 2024

Correct

111112345345Option: C
May 18, 2024

1 + 5 additional - tested

BurtSmart
Jun 9, 2024

https://learn.microsoft.com/en-us/microsoft-365/admin/setup/domains-faq?view=o365-worldwide Maximum 5

DPAJAOption: C
Mar 18, 2025

https://learn.microsoft.com/en-us/microsoft-365/admin/setup/add-or-replace-your-onmicrosoftcom-domain?view=o365-worldwide#:~:text=Make%20sure%20to%20verify%20the%20spelling%20and%20accuracy%20of%20the%20domain%20name%20you%20entered.%20You%27re%20limited%20to%20five%20onmicrosoft.com%20domains%2C%20and%20currently%20they%20can%27t%20be%20deleted%20once%20they%27re%20created.

3e98d4cOption: A
Apr 16, 2025

Vous pouvez ajouter 5 domaines onmicrosoft mais un seul pourra fonctionner à la fois donc bien lire la question, vous ne pourrez pas les attacher aux emails.