@Jane Elizabeth Dum
> if I have 365 on my computer ?
<< Do you mean Microsoft 365 desktop clients?
If yes, please open Control Panel, go to Programs and Features.
If you see Microsoft 365 Apps listed as below, it means you have it installed on your computer.
If you have a Microsoft 365 subscription includes the desktop version of the App, you could install Microsoft 365 on each of your computer separately, but you could also try sign in Microsoft 365 online.
By the way, some features are not included in Microsoft 365 on the web.
More information, you could refer to How sign in works in Microsoft 365.
Regards,
Erin
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