OneDrive files and photos, for example:.Microsoft details what’s included in the Microsoft 365 change: If you fill up your OneDrive, lots of stuff will just stop working until you make more space. This update will not affect your mailbox storage amount, but instead, this might change how much cloud storage you have available on OneDrive. This update includes storage (messages and attachments) and certain content found on OneDrive. Starting February 1, 2023, cloud storage used on Microsoft 365 apps and services will change. If you start seeing “ Quota Exceeded” or “Mailbox full” messages on Outlook, it might be time to take a look at how much space your emails, attachments, and whatever else is making you reach your storage limit. Microsoft notes that the 50 GB storage space is unavailable to Microsoft 365 Trial subscribers, so they can’t gain access to the increased storage space until after the paid subscription starts. The storage limit for free accounts is capped at 15 GB, but if you want more space, you can sign up for a Microsoft 365 subscription to get 50 GB of storage.