​​​​​​​Microsoft 365 is built to operate with the newest browsers and versions of Office. If you employ more mature browsers or versions of Office that aren't in mainstream support: Microsoft received’t deliberately protect against you from connecting for the services, but the quality of your Microsoft 365 encounter may https://microsoft365forbusiness.wikiconversation.com/7179216/microsoft_365_enterprise_license_things_to_know_before_you_buy