Set Up Your Partner Center Account

Create your Partner Center account and connect it to a Microsoft Entra tenant

Publishing your launcher to the Microsoft Store happens in your own Partner Center account, and before you can submit anything that account has to be associated with a Microsoft Entra ID tenant.

This is a one time setup.

The three pieces

Every error on this page comes from confusing these.

Piece	What it is
Microsoft account	The email you personally sign in with, such as [e-mail]. Also called an MSA, or a personal account.
Microsoft Entra tenant	The directory that holds your company identity, named yourcompany.onmicrosoft.com. Accounts that live inside it are work or school accounts.
Partner Center account	The publisher account that owns the Store listing. It needs a tenant associated to it.

Partner Center accepts work or school accounts only. A personal Microsoft account can create and administer a tenant perfectly well, but it cannot be used to associate one.

Step 1: Register on Partner Center

1. Sign up at partner.microsoft.com. The account is free, and so is publishing your launcher.
2. Start identity verification immediately. Select Single Developer or Company verification It can take several days and nothing ships until it clears, but everything else on this page can be done while it runs.

Step 2: Check whether you already have a tenant

When Partner Center tells you yourcompany.onmicrosoft.com is not available, do not pick a different name yet.

Those names are globally unique across every Entra tenant in the world, so "not available" very often means you already created this tenant yourself, possibly years ago the first time you signed in to Azure, Microsoft 365, or the Store.

Step 3: Find the tenant you already own

Sign in to entra.microsoft.com with the Microsoft account you have used for Microsoft services in the past, then open the directory switcher in the top right.

Each directory's Overview page shows its Tenant ID and Primary domain. Note both down. Partner Center shows them again on the confirmation screen, and you want to be certain you are associating the right one.

If you find no tenant anywhere, use Create Microsoft Entra ID in Step 5 instead. Partner Center builds the tenant and associates it in one go, and you can skip Step 4.

Step 4: Create a work account with Global Administrator

Check who your administrators are under Entra ID > Roles & admins > Global Administrator > Assignments.

If every name listed there is a personal account, an outlook.com, hotmail.com or gmail.com address, you cannot associate the tenant yet. Partner Center rejects those with:

You can't sign in here with a personal account. Use your work or school account instead.

Create a proper account inside the tenant:

1

Go to Entra ID > Users > All users and click New user > Create new user.

2

Set the User principal name to an address inside your own tenant, such as [e-mail], and give it a display name.

3

Under Password, choose auto-generate and copy the password before continuing. It is not shown again.

4

Open the Assignments tab, click Add role, and pick Global Administrator. Then Review + create.

5

Sign in once as that account at login.microsoftonline.com. Set the permanent password and register multifactor authentication now.

Do not skip that last sign in. The password change and the MFA registration are both forced on first use, and meeting them halfway through the association flow breaks it and sends you back to the start.

Two details worth knowing:

• The account must be a member of the tenant. Users created this way are members by default, but a guest invited in from another directory will not work even with the role.
• Keep your original personal account as a Global Administrator too. Two administrators turns a lost password into an inconvenience rather than a support ticket.

Step 5: Associate the tenant

Open Account settings > Tenants > Developer in Partner Center > Associate Microsoft Entra ID

Partner Center then signs you out and asks for the Global Administrator of the tenant you are associating, which is not the account you were just using. Sign in with the work account from Step 4.

Do this in a private browsing window. Several Microsoft sessions are usually open by this point, and the account picker will cheerfully reconnect you as the wrong one.

A confirmation screen shows the domain and tenant ID. Check them against what you noted in Step 3, then confirm.

Every user in the tenant gets Partner Center access automatically, as a default user. Associate a tenant you control, not a large corporate directory full of people who have no business seeing your Store submissions.

Step 6: Sign in again, then assign roles

When the association succeeds you land on a confirmation page telling you the tenant is connected and that the account you signed in with now holds Account admin permissions.

Sign out and sign back in with your Entra credentials before doing anything else. The new permissions are carried in your sign in token, so the session you are currently holding does not have them yet. Skipping this makes User management look broken.

Then open User management in Partner Center and give each user the role they actually need. Developer and Manager cover most launcher work.

Removing a tenant later removes every associated user and their permissions from Partner Center. It leaves the accounts untouched in Entra ID, but the Partner Center side has to be rebuilt by hand.

Next steps

Publish Store Package (MSIX)

Troubleshooting

What you see	What it means
"You can't sign in here with a personal account"	You signed in with an MSA. Do Step 4.
"The domain is not available"	Usually your own existing tenant, not a squatter. Do Step 2.
"Already associated with another Partner Center account"	A tenant belongs to one Partner Center account at a time. Find the account holding it, or associate a different tenant.
A password change or MFA prompt appears mid flow	The work account was never signed in to. Finish Step 4, then start the association again.
The tenant is associated, but you cannot assign roles	Your token predates the association. Sign out and sign back in, as in Step 6.

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