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First Steps: Accessing Your Microsoft Tenant from Cosmistack

By Jake T on 7/22/25

Description: If you purchased Microsoft 365 licenses through Cosmistack and had us create your Microsoft tenant (organization account), this tutorial walks you through your first sign-in.

This guide will walk you through your first login to your new Microsoft tenant, which was seamlessly created for you by Cosmistack because you're a valued customer who purchased Microsoft licenses through us. Because you didn't have an existing Microsoft tenant when you purchased your licensing through us, we took care of the initial tenant creation to get you up and running quickly.

While we took care of the initial setup, this Microsoft tenant is now entirely yours to manage and customize. You now have direct access and full administrative control over your Microsoft services.

Steps

1. In your browser, navigate to https://admin.microsoft.com

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2. Enter the username we provided you after processing your purchase. This will be similar to "admin@<companyname>.onmicrosoft.com"

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3. Enter the initial password provided to you

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4. Enter the initial password again, and create and set a new password

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5. Click "Yes" to stay signed in

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6. That's it! You are now successfully signed in to your tenant's admin portal

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Disclaimer: The information provided in this article is for educational and informational purposes only. The techniques, tools, and technologies discussed are intended to be used by individuals with a solid understanding of the subject matter. Readers are entirely responsible for any actions they take based on the content of this article. This blog and its authors do not assume any responsibility for any unintended outcomes, data loss, or issues that may arise from following the instructions or recommendations provided.

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