Microsoft 365 and Office | Subscription, account, billing | For home | Other
Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Need product key to use on my new device
How do I get my product key for Microsoft 365
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Margaret Mulhern
10
Reputation points
How do I find the product key for a new Microsoft 365 personal install?
Microsoft 365 and Office | Subscription, account, billing | For home | Other
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SHERRY WILLIAMS 0 Reputation points2026-04-03T01:28:05.3933333+00:00 -
Stefan Blom 346.1K Reputation points MVP Volunteer Moderator2026-04-03T08:55:39.4033333+00:00 Sherry, if you have an existing Office product, you install via https://account.microsoft.com/services . If you need further assistance, please start your own thread by using the Ask a question button at the top of the Q&A page. Good luck. (The current thread is old and it will be closed.)
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Mary Morris 0 Reputation points2025-12-16T01:15:01.29+00:00 I order 365 Microsoft but I am missing the product key? where do find the product key?
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Gabriel-N 20,305 Reputation points Microsoft External Staff Moderator2025-12-16T08:04:17.8766667+00:00 Dear Mary Morris
Thank you for reaching out Q&A Forum.
For Microsoft 365 subscriptions purchased directly through your Microsoft account, a product key is not required. In this case, you only need to download the apps and sign in using the same account associated with your subscription. You may refer to the official installation guide here: https://support.microsoft.com/en-us/office/download-install-or-reinstall-microsoft-365-or-office-2024-on-a-pc-or-mac-4414eaaf-0478-48be-9c42-23adc4716658
However, if you purchased your license through a seller and received a 25‑character product key, then your activation method is different. In that situation, you need to use your specific key and activate it through the steps described in this Microsoft article: https://support.microsoft.com/en-us/office/activate-office-for-windows-5bd38f38-db92-448b-a982-ad170b1e187e
You can also try activating the key directly through: https://setup.office.com/
If the product key does not work, please contact the seller directly, as they are responsible for the key you received.
To better assist you, I recommend creating a new thread, selecting the correct product tag, and describing your situation in detail so the community can provide accurate guidance.
Since this is a public forum, please avoid sharing any personal or organizational information, including your full Microsoft account details or product key, to protect your privacy.
I hope this information is helpful.
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walter jordon 0 Reputation points2025-10-13T21:54:16.4233333+00:00 How do I get my pass key?
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Stefan Blom 346.1K Reputation points MVP Volunteer Moderator
2025-10-14T06:32:36.7166667+00:00 How do I get my pass key?
If this is an Xbox GamePass question, go to https://support.xbox.com/ .
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Gabriel-N 20,305 Reputation points Microsoft External Staff Moderator
2025-09-22T13:15:46.8266667+00:00 Thank you for posting your question in the Microsoft Q&A forum
Microsoft 365 Personal subscriptions typically do not require a product key. Instead, your subscription is linked to the Microsoft account you used during purchase or setup.
To install or reinstall Microsoft 365:
- Go to m365.cloud.microsoft/apps and, if you're not already signed in, select Sign in.
- Sign in with the account you associated with this version of Microsoft 365.
- After signing in, follow the steps that match the type of account you signed in with.
For more detailed instructions, please visit : Download, install, or reinstall Microsoft 365 or Office 2024 on a PC or Mac
If you purchased a product key and have lost it, please check your email for the original purchase confirmation. If you cannot find it, we recommend contacting your seller for assistance then you can redeem the product key once at Setup Office - Office 365 Redemption. After redemption, the key is linked to your account and will not be needed again.
I hope this information is helpful. If you have any further questions, please don’t hesitate to reach out.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.
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Gabriel-N 20,305 Reputation points Microsoft External Staff Moderator
2025-09-24T09:23:55.32+00:00 May I know if you have got any chance to check my reply? Please feel free to share more detailed information to us and it will be very helpful for us to better work out this issue.
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Gabriel-N 20,305 Reputation points Microsoft External Staff Moderator
2025-09-26T09:21:57.98+00:00 Do you still meet this issue? If so, could you please share more detailed information, I am looking forward to seeing your message.