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Microsoft 365 Installation Problems

Fix Microsoft 365 Installation Problems with Multiple Accounts

Phi Hung VoPhi Hung Vo Sep 29, 2026 869 views

Question details

The user is experiencing installation conflicts with Microsoft 365 because multiple Microsoft accounts or trial versions are linked to the same device.

How to Fix Microsoft 365 Installation Problems with Multiple Accounts
Product
Microsoft 365
Device & OS
not provided
Scenario
Installing or activating Microsoft 365 on a device where multiple Microsoft accounts have been used or trial versions are present.
Observed behavior
The active subscription is not recognized, or the system defaults to a trial version, preventing successful installation and activation of the paid software.
Before you start

Make sure you have your Microsoft account login credentials ready and close any currently open Office applications before troubleshooting the installation.

Solution 1Recommended

Identify the Correct Account and Reinstall Microsoft 365

Locate the account with the active subscription, remove any conflicting trial versions, and perform a fresh installation.

Having multiple Microsoft accounts signed into one device can confuse the Office installer. You must clear out old trial versions and ensure you are downloading the software directly from the account that holds the active license.

1
Check active subscriptions

Open your web browser and navigate to the Microsoft Services and subscriptions page. Sign in with your primary Microsoft account to verify if it holds the active Microsoft 365 license.

2
Uninstall conflicting versions

Open the Control Panel or system Settings on your device. Go to the 'Programs' or 'Apps' section, locate any existing Microsoft Office trial versions or older installations, and select 'Uninstall'.

3
Download and install

Return to the Services and subscriptions page while signed into the correct account. Click the 'Install Office' button and follow the on-screen prompts to complete a clean installation.

Identify the Correct Account and Reinstall Microsoft 365
Account Merging: Microsoft accounts and subscriptions generally cannot be merged. Avoid creating additional accounts during this process to prevent further licensing conflicts.
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  1. 1. Download WPS Office: Visit the official WPS Office website and download the free installation package for your operating system.
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Frequently Asked Questions

Can I merge two Microsoft accounts if I bought Microsoft 365 on the wrong one?

No, Microsoft accounts and their associated subscriptions cannot be merged. You must sign in using the specific account that holds the active license to install and activate your software.

Why does my computer keep opening a trial version of Office instead of my paid Microsoft 365?

This usually happens when a pre-installed trial version was not removed before installing your paid subscription. You need to completely uninstall the trial version from your system settings and then reinstall Microsoft 365 from your active account.

What should I do if the Microsoft Services and subscriptions page says I don't have a subscription?

First, ensure you are signed in with the exact email address used for the original purchase. If the subscription still does not appear, contact Microsoft Support with your proof of purchase so they can help locate the correct account.