Can a single user have a mix of Frontline and Enterprise licenses?

Sheppard, Nicholas 0 Reputation points
2026-01-30T18:33:58.87+00:00

Can a single user have both an F-series license and an E-series license? For example, can a user have an F3 license (with F5 add-on) AND have an Office E3 license at the same time. I know it's possible to assign both to a user in the admin center. My question is whether or not it introduces security and/or feature conflicts, instability, etc.

Microsoft 365 and Office | Other
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  1. Aymeric-B 26,710 Reputation points Independent Advisor
    2026-01-30T19:20:51.36+00:00

    Hello !

    You can mix F-series and E-series licenses.
    The user will benefit from both licenses and will have the highest usage limit allowed by either license.
    For example, if license F allocates 100GB of storage and license E allocates 1TB of storage, the user with both licenses will have 1TB of storage (i.e., the highest limit).

    Technically, allocating two licenses is possible, but it is strongly discouraged. This will result in additional costs for you and greatly complicate license management (due to overlap). Instead, try using add-ons whenever possible.

    Please let me know if you have any other question !

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