RE-DOWNLOAD MS-365 PERSONAL TO NEW SYSTEM

LGLDSR73-6492 1,480 Reputation points
2026-08-15T18:14:34.5233333+00:00

Greetings,(1) I am setting up a new system, Win-11 Home, the second of two, so I am well within my MS 356 Personal Limit.

This system came with a MS 365 Trial but I already have a subscription to MS-365 Personal. I uninstalled the Trial.

However, Outlook is left behind and cannot be uninstalled. I need to download MS-365 Personal which is going to include Outlook. What is going to happen with the existing Outlook on the system?

(2) What I thought was interesting is that without my intervention the files / directories of OneDrive repopulated this system. OneDrive was pre-installed.

Thank you,

LGLDSR73

Microsoft 365 and Office | OneDrive | For home | Windows
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Answer accepted by question author
Stefan Blom 351.5K Reputation points MVP Volunteer Moderator
2026-08-16T13:55:36.7933333+00:00

You are probably seeing two different versions of Outlook on your PC. The classic Outlook belongs to the Microsoft 365 subscription (it is also included in some one-time payment licenses, such as Office Home & Business 2024).

The free version of Outlook is called new Outlook for Windows, and it often comes preinstalled with PCs. It is a Microsoft Store app and it can be installed and uninstalled separately from the Microsoft Office suite.

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Answer accepted by question author
Nathan R 915 Reputation points Independent Advisor
2026-08-16T10:12:04.96+00:00

Hey there, LGLDSR73-6492

If Microsoft 365 isn't installed on your computer anymore, please can you sign into your account here: https://account.microsoft.com/services/microsoft365/details#billing

Once you have signed in, please click onto install. This will install Microsoft 365 onto your computer. If Microsoft 365 is already installed onto your computer, please open a Microsoft Office app such as Word, PowerPoint, Excel. When the app is open, please click onto account, on the bottom-left corner.

User's image

This will open a page showing account details and who the product is licenced to. Under product information, if it is not licenced, please sign into your Microsoft account that has the Microsoft 365 licence. Once you have done this, it will allow you to use the Microsoft 365 apps.

However, Outlook is left behind and cannot be uninstalled. I need to download MS-365 Personal which is going to include Outlook. What is going to happen with the existing Outlook on the system?

The existing Outlook will be replaced with the one in your subscription. However, if it is already installed, may just install the Office apps you don't have.

In terms of the Outlook data, the Outlook data is stored under program files with with your profile. This just holds information from your Outlook profile. You may need to sign back into the Outlook app for it to re-download your profile information and store offline copies of your email. I have found, when going through this, it hasn't removed anything.

(2) What I thought was interesting is that without my intervention the files / directories of OneDrive repopulated this system. OneDrive was pre-installed.

OneDrive is built into Windows. As soon as you sign into your Microsoft account on OneDrive, whether you have installed Microsoft 365 and activated or not, it will sync your OneDrive files onto your computer. You can sign into as many devices as you want with OneDrive and it will sync your files. With the Microsoft 365 subscription, you get the 1TB storage allocation for one Microsoft account.

Hope this information helps,
Nathan

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AI answer

2026-08-15T18:14:50.0233333+00:00

For a new Windows 11 Home PC with an existing Microsoft 365 Personal subscription:

  1. Use the same Microsoft account that owns the Microsoft 365 Personal subscription. The subscription is tied to that account, not to the old computer.
  2. Sign in at the Microsoft account dashboard, open Subscriptions, and select Install Microsoft 365. Then run the installer and sign in inside an Office app to activate it.
  3. A preinstalled trial does not have to be removed before setup. If it was already uninstalled, reinstalling Microsoft 365 Personal from the subscription account is still the correct path.

About the Outlook left behind:

  • Opening an Office app such as Word or Excel and signing in with the subscription account should let Office recognize and activate the Microsoft 365 Personal subscription.
  • If the previous trial causes an activation problem, uninstall Office and reinstall it from the Microsoft account.
  • The provided material does not state that the remaining Outlook app must be removed separately before reinstalling.

About OneDrive repopulating automatically:

  • OneDrive is separate from the Office trial.
  • Uninstalling Microsoft 365 or Office does not delete OneDrive files.
  • OneDrive is integrated into Windows 11, so when signed in with the same Microsoft account, cloud-stored OneDrive files appear in File Explorer and sync to the new PC.
  • Files may appear first as online-only. If local copies are needed, right-click the OneDrive files or folders and select Always keep on this device.

Before retiring the old PC, verify OneDrive has fully synchronized and confirm important files are visible in OneDrive on the web or on the new PC before erasing or disposing of the old device.

References:

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  1. LGLDSR73-6492 1,480 Reputation points
    2026-08-16T17:23:08.41+00:00

    Thank you, Stefan.

    Only the Classic version is present in the Start Menu. The New Outlook is in the Task Bar but allows me to switch to the Classic should I so choose.

    Thanks for you help with this, much appreciated!

    Best,

    LGLDSR73

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