Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
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it is possible to install and use different versions of O365 on the same PC, but there are some tips and limitations you should be aware of. For example, you should install the earlier version of O365 first, and make sure all versions are either 32-bit or 64-bit. You can’t have a mix of both.
However, you may still encounter some issues when you use two versions of O365 on the same PC, such as file associations, default programs, and licensing conflicts. If you decide not to keep both versions and uninstall the earlier version, you might need to repair the version remaining to make sure that everything works correctly.
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Ajibola