To use a custom domain you need more steps and knowledge. I recommend getting a consultant near you. He or she will setup your environment in about 1 to 3 hours. Depends if all the functionality you need. Answer from der_klee on reddit.com
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Microsoft Learn
learn.microsoft.com › en-us › microsoft-365 › admin › setup › setup
Set up Microsoft 365 for business - Microsoft 365 admin | Microsoft Learn
Learn how to set up your Microsoft Business Premium, Microsoft 365 Business Standard, Microsoft 365 Business Basic, Microsoft 365 Apps for business, or Office 365 Education subscription.
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Microsoft Business Licenses
365cloudstore.com › 365 cloud store › microsoft 365 › set up microsoft 365 business: step by step guide
Set up Microsoft 365 Business: Step by Step Guide
May 30, 2023 - This article is a guide through the activation process for Microsoft 365 Business. From adding your domain to more complex tasks...
Discussions

Can I create a microsoft business account with my business email straight away?
To use a custom domain you need more steps and knowledge. I recommend getting a consultant near you. He or she will setup your environment in about 1 to 3 hours. Depends if all the functionality you need. More on reddit.com
🌐 r/Office365
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June 13, 2024
Configuring Microsoft 365 for Small Businesses
Sounds like you're choosing to set it up as a personal device Try following; https://learn.microsoft.com/en-us/entra/identity/devices/device-join-out-of-box You need windows 11 pro, if you have windows 11 home it won't work. You can purchase win 11 pro from the Microsoft store if they are windows 11 home. Make sure any new machines are windows 11 pro from the get go, they are more expensive. More on reddit.com
🌐 r/Office365
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July 5, 2025
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Microsoft Learn
learn.microsoft.com › en-us › microsoft-365 › admin › setup › setup-business-standard
Set up Microsoft 365 Business Standard with a new or existing domain - Microsoft 365 admin | Microsoft Learn
November 14, 2024 - When the signup process is complete, you'll be directed to the admin center, where you'll follow a wizard to install apps in Microsoft 365, add your domain, add users, and assign licenses. After you complete the initial setup, you can use the Setup page in the admin center to continue setting up and configuring the services that come with your subscriptions.
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SoftwareKeep
softwarekeep.com › blogs › how-to › set-up-office-365-email-for-business
Step by Step Guide to Set Up Microsoft 365 Business eMail
December 16, 2024 - To get started, go to Microsoft and select a business plan. Follow the prompts to set up your account with them by connecting it through the domain or creating an email address for receiving correspondence from businesses in Outlook!
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Microsoft 365
setup.office.com
Setup Microsoft 365
Sign in with your Microsoft account and enter your product key to get started. For help, go to office.com/support
Find elsewhere
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Microsoft Learn
learn.microsoft.com › en-us › microsoft-365 › admin › setup › plan-your-setup
Plan your setup of Microsoft 365 for business - Microsoft 365 admin | Microsoft Learn
The setup wizard walks you through installing the apps in Microsoft 365 on your computer, adding and verifying your domain, adding users and assigning licenses to them, and connecting your domain. ... If you need to Assign admin roles in Microsoft 365 for business to the users you add in the wizard, you can do that later on the Users page.
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Microsoft Learn
learn.microsoft.com › en-us › microsoft-365 › admin › simplified-signup › signup-business-standard
Sign up for Microsoft 365 Business Standard - Microsoft 365 admin | Microsoft Learn
Under Microsoft 365 Business Standard, select Buy now. On the Subscription and account details page, choose the number of people you want and how often you want to be billed. Select Next. Enter an email address that you already use. This email address can be any address you want Microsoft to use to communicate with you during setup...
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Microsoft Support
support.microsoft.com › en-us › office › welcome-to-microsoft-365-for-business-d60a9cbe-8cb5-4807-b57c-bca553e372aa
Welcome to Microsoft 365 for business - Microsoft Support
Go to microsoft365.com and sign in with your business username and password. When you sign up for a subscription, you specify an alternate email address where you'll get emails from Microsoft that include links to sign into your Microsoft 365 business account.
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Reddit
reddit.com › r/office365 › configuring microsoft 365 for small businesses
r/Office365 on Reddit: Configuring Microsoft 365 for Small Businesses
July 5, 2025 -

Hi Folks,

I run a small business, with three Windows 11 devices but planning to add a few more in the next year or so. I'd like to get my user account and licence management right before we spend any more money on our IT.

We currently have two users with MS365 Business Premium Licences, and three machines with Windows 11 licences. Unfortunately Windows 11 wouldn't let me use the business email address to activate those machines, so those licences are currently tied to my ancient personal hotmail account that I generally used for spam. Going forward, I would like to have an admin account that is associated with the business for activating new Windows 11 licences and installing software, and I would like to provide users with standard accounts (also associated with the business) for logging in and doing work.

The thing that I do not understand is that whenever I try to use one of the pre-existing (licenced) accounts in MS365 for either activating a new device or creating a new user in Windows, Microsoft keeps bouncing a message back that reads "Looks like this isn't a Microsoft account. Try another email or sign up for a new one." I cannot believe that Microsoft expects me to just go minting one Outlook.com address after another whenever I want to add a new starter or new device, but I cannot figure out what the right way of doing this is.

Can anyone point me in the direction of any guidance that will help me to understand how to set this up. We need a solution that is pretty user friendly because we are a small business and do not have any in-house technical support.

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Davenport Group
davenportgroup.com › home › microsoft 365 setup guide for small businesses
The Complete Microsoft 365 Setup Guide for Small Businesses | Davenport Group
September 20, 2023 - Set up Microsoft 365 easily for your small business. Follow this complete guide to boost productivity, collaboration, and data security with simple steps.
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Microsoft 365
microsoft365.com
Login | Microsoft 365
Microsoft 365 empowers your organization to organize, and safely store files in OneDrive with intuitive and easy organizational tools. Keep your business connected from anywhere with chat and cloud collaboration tools.
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LogicCoud IT, Inc.
logiccloudit.com › home › microsoft office 365 account setup
Microsoft Office 365 Account Setup - Business IT Support & Managed Service Provider
September 25, 2018 - With the Office 365 Account Setup Service we: ... - Provide you with instructions so your users can download and install any Office 365 Software (license dependent) - Set required settings so that email and the other core Office 365 services are functional (only for plans with vanity domain DNS dependencies) The LogicCloud IT Office 365 Account Setup Service is a fixed-fee service designed to setup the basic requirements for an Office 365 account so you can start using it...
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Hello Next Service,

Good day!

Thank you for posting to Microsoft Community. We are happy to help you.

Setting up a business email with Microsoft 365 can seem overwhelming at first, but I'm here to guide you through the process. Let's break it down into a few steps:

  1. Purchase a Microsoft 365 Subscription: If you haven't already, you'll need to sign up for a Microsoft 365 subscription. You can choose the appropriate plan based on your business needs, which includes email services along with other productivity tools. Purchase or trial an Office 365 for Business subscription via https://products.office.com/en-us/business/compare-more-office-365-for-business-plans, and some of the subscriptions.

Example: sign up for the ‘Microsoft 365 Business Premium’ subscription and follow all the steps.

  1. Choose a Domain Name: Next, you'll need to decide on a domain name for your business email. Ideally, it should reflect your company or brand name. If you already own a domain, you can use that. Otherwise, Microsoft offers domain registration services, or you can purchase one from a domain registrar.
  2. Configure DNS Settings: Once you have a domain name, you'll need to configure the DNS (Domain Name System) settings to point to Microsoft 365. This involves adding some specific DNS records, such as MX (Mail Exchanger) records, to your domain's DNS management panel. This step is crucial for routing your business emails correctly.

Reference: Add a domain to Microsoft 365 - Microsoft 365 admin | Microsoft Learn

  1. Create User Accounts: After configuring the DNS settings, you can start creating user accounts for your business. These accounts will have email addresses associated with your domain (e.g., ******@yourbusiness.com). Use the Microsoft 365 admin center or the Exchange Admin Center to add and manage user accounts.
  2. Set Up Email Clients: To access your business email, you have different options. You can use the web-based Outlook app (Outlook Web App) or configure third-party email clients like Microsoft Outlook, Apple Mail, or Thunderbird with your Microsoft 365 account. Each email client may have specific configuration steps, so it's best to follow the instructions provided by Microsoft or the client you're using.

Reference: Add an email account to Outlook - Microsoft Support

  1. Configure Email Security: It's crucial to configure proper security measures for your business email, such as enabling multi-factor authentication (MFA), setting up spam filters, and implementing email encryption if necessary. These measures help protect your account and ensure the confidentiality of your communications.

Remember, can assist you with any specific questions or issues you may encounter along the way. Please feel free to let us know if there are any questions or if we've got you wrong. We will keep assisting you based on the information you provide. We sincerely appreciate your patience and cooperation.

Sincerely,

Eben Ezer Tres | Microsoft Community Moderator

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Discover IT
discover.com.au › home › microsoft office 365 › 5 steps to setup microsoft 365 business
5 Steps to Setup Microsoft 365 Business | Discover IT Support
November 8, 2024 - To assign your business domain with your Microsoft 365 account is an important step for a seamless transition, which will then allow your domain to appear as it did before on your previous set up. You can buy a domain in Microsoft 365, or buy and transfer one you already own across. Running successfully for over 20 years, we are a managed IT support provider helping organisations of all sizes to setup Microsoft 365 business.
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Petri
petri.com › home › getting started with microsoft 365 business premium
Getting Started with Microsoft 365 Business Premium | Petri
May 19, 2022 - As part of the tenant setup, we can configure a Custom Domain such as “firstcoffee.co.uk” to make user sign-ins more friendly. Once you have settled upon a Username and Domain Name, just choose Save and choose a password. Quantity and Payment is the next section. It’s important to understand that by continuing, you’ll be agreeing to a contract with Microsoft for the provision of the Microsoft 365 Business ...