How to Prepare for Microsoft 365 Family Shared Storage

Microsoft 365 Family is moving from separate 1 TB OneDrive allowances for each person to a 2 TB cloud-storage pool shared by the subscription owner and up to five additional members. As of October 27, 2026, the shared model applies to new and upgraded Family subscriptions and to expired subscriptions that are repurchased. If your Family subscription was active before October 8, 2026, it will generally change at its first renewal on or after May 2, 2027. Before a renewal, upgrade or repurchase, establish which date applies to your subscription, total the group’s storage use and decide whether to reduce it or add capacity.

Storage model	Included cloud storage	How it works
Existing Family subscription started before October 8, 2026	1 TB per person, for up to six people	Each person has a separate allowance; unused space in one account does not increase another person’s allowance.
Family shared-storage model	2 TB total	The owner and up to five additional members use one shared pool. One person can use more than 1 TB if enough pooled capacity remains.

The change affects capacity, not privacy. A shared allowance does not combine folders or give the owner access to another person’s files, photos or mailbox. Each member continues to use their own Microsoft account and can access only files they have created or that another person has explicitly shared with them.

Confirm when your subscription will move

Start with the Microsoft account that owns the subscription. A member who receives shared benefits can check their own storage, but the owner is the person who can review the subscription, make plan changes and manage sharing.

1. Sign in at the Microsoft account Services and subscriptions page with the account used to buy Microsoft 365.
2. Find the Microsoft 365 Family subscription and record its status, plan name and next billing or expiry date.
3. If recurring billing is on, note the next charge date. If it is off, note the expiry date instead.
4. If you are unsure when the subscription began, open Payment and billing, then Order history. Look for the original purchase, a renewal, a redemption or a later repurchase.
5. Open the account’s storage dashboard to see the current quota and available cloud storage.

Use these rules as a starting point, then follow the messages and dates shown in the owner’s account:

• New, upgraded or repurchased subscription from October 8, 2026: Microsoft 365 Family uses the 2 TB shared pool. A repurchase means buying the subscription again after it has expired.
• Subscription active before October 8, 2026: it generally remains on the previous per-person model until its first renewal on or after May 2, 2027.
• Upgrade before the scheduled transition: an upgrade can move an existing subscription to the shared model early. Moving from Family to Premium does not increase the included storage, because both plans include 2 TB of shared cloud storage after transition.
• Downgrade before May 2, 2027: a downgrade alone does not normally trigger the early transition. On renewal on or after May 2, 2027, the subscription moves to the storage model for the destination plan. Microsoft 365 Personal provides 1 TB of storage dedicated to the account holder rather than a 2 TB shared pool.

Eligible existing subscribers in supported markets may receive transition bonus storage when their subscription renews, but it should not be treated as available until it appears in the account. Microsoft’s shared-storage transition details explain the current dates, plan allowances and early-change rules.

Total the household’s actual cloud storage use

Before the subscription moves, ask every person receiving the benefit to check their own storage dashboard and report the displayed total. Use the personal Microsoft account connected to the shared subscription, not a work or school OneDrive account. The subscription owner should collect the totals in a simple list rather than infer them from the size of OneDrive folders on household computers.

Local folder sizes can be misleading. With OneDrive Files On-Demand, a file marked with a blue cloud icon is online-only: it appears in File Explorer but does not represent a full local copy. Conversely, a file stored locally may not be current if it has stopped syncing. Deleted items can also continue to use OneDrive storage until they are permanently removed from the OneDrive Recycle Bin.

List each member’s current use and expected near-term growth, then compare the total with 2 TB. Include likely new phone photos, computer-folder backups, video projects and shared household records. Leave a margin rather than aiming to sit exactly at the limit.

Hypothetical example one: one heavy user and several light users

Suppose one person uses 1.45 TB and the other five use 110 GB, 90 GB, 75 GB, 60 GB and 40 GB. The combined total is about 1.825 TB. This group fits within the 2 TB pool, and the heavy user can use more than the former 1 TB individual allowance. However, only about 175 GB remains for everyone, so the household should remove obvious duplicates, archive old projects and recheck usage regularly.

Hypothetical example two: a household already over the pool

Another group uses 780 GB, 520 GB, 410 GB, 260 GB, 180 GB and 95 GB. Its total is about 2.245 TB, or roughly 245 GB above the included pool. It must free space, add storage, change to a plan that provides more shared capacity, or arrange separate storage for one or more members. Deleting exactly 245 GB is not a practical target because it leaves no room for new files.

Choose a storage plan before renewal

If the group is comfortably below 2 TB, there may be no need to buy anything. Still, check that every person has reported the right account, remove unneeded files and repeat the total shortly before the renewal, upgrade or repurchase that triggers the change.

If the group is near 2 TB, estimate growth for the next six to twelve months. Check phone camera uploads, backed-up Desktop, Documents and Pictures folders, video libraries and project archives. Agree in advance who will archive older material and who is most likely to need additional space.

If the group is already above 2 TB, combine one or more of these options:

• Delete unnecessary cloud content. Begin with large videos, duplicate photo libraries, obsolete installers, old device backups and archives that are safely stored elsewhere.
• Archive infrequently used files outside OneDrive. Download them, save them outside any OneDrive-synced folder and verify that the copies open before deleting the cloud originals.
• Add storage. Family, Premium and Pro subscriptions can be extended to a total of 10 TB. Extra storage is shared by the members of the subscription. The new quota can take up to 24 hours to appear; contact Microsoft support if it has not updated after 48 hours.
• Change plans with care. Family and Premium both provide 2 TB of shared cloud storage after transition, so changing between them is not a storage upgrade. Microsoft 365 Pro includes 5 TB of shared storage for new subscriptions, but plan availability, features and pricing vary by market and purchase channel.
• Stop sharing with a member only after preparation. The person should first obtain suitable separate storage or create verified local archives. Once sharing stops, their OneDrive allowance falls to 5 GB.

Reduce OneDrive use without losing cloud-only files

Each person must clean up their own private OneDrive. The subscription owner can manage the subscription and sharing, but should not assume that they can review or delete another member’s private files.

1. Review large files. Sign in to OneDrive on the web or open the storage area of the Microsoft account dashboard. Identify the largest items before deleting anything.
2. Check whether the item is local. In Windows File Explorer, a blue cloud icon means the item is online-only. It is not an independent backup on the computer.
3. Download files that you intend to keep. On the OneDrive website, select the files or folders and choose Download. Save the download outside every OneDrive-synced folder. Multiple selected items may download as a ZIP file.
4. Alternatively, make a folder available offline. In File Explorer, right-click the folder and select Always keep on this device. Wait for the green circle with a white check mark before treating it as an offline copy.
5. Make a separate archive copy. Copy the downloaded or offline material to a normal local folder outside OneDrive or to an external drive with enough free capacity. For irreplaceable material, keep another copy on a separate device or storage medium.
6. Verify the archive. Extract any ZIP file, compare folder contents and open a sample of documents, photos and videos. If necessary, disconnect temporarily from the internet to confirm that a Windows file really opens locally.
7. Delete only after verification. Delete the OneDrive originals, then permanently remove them from the OneDrive Recycle Bin when you are certain the archive is complete. The reported storage total can take some time to update.

Do not select Free up space when the goal is to reduce cloud usage. That command removes the local copy and leaves the cloud file in OneDrive, so it does not reduce the shared pool. Likewise, deleting a file inside a synced OneDrive folder deletes it from OneDrive and from other devices that sync that location.

If Desktop backup is complicating the clean-up, follow the safe process for stopping OneDrive Desktop syncing in Windows 11 before moving or reorganising those files.

Know what the owner and members must do

The subscription owner should track the transition date, review the subscription dashboard, manage billing and sharing, and agree a household storage target. Every member should check their own account, report their usage, clean up private files and verify any archive before their files are removed from OneDrive.

Do not stop sharing merely to make the pooled total appear lower. The removed person loses Microsoft 365 subscription benefits, including the extra OneDrive allowance, and their files do not transfer to the owner. Use this safer order:

1. The member checks their exact current usage.
2. They buy or activate separate storage, or download and verify enough files outside OneDrive.
3. They confirm that the separate quota or local archive is available.
4. The owner stops sharing from the subscription sharing page.

Stopping subscription sharing and removing a person from a Microsoft family group are separate actions. Stopping sharing ends the Microsoft 365 benefits, but does not automatically remove the person from the family group.

Act before over-quota limits disrupt service

Going over the shared allowance does not mean files immediately disappear. Microsoft says people affected by this transition can continue to access files for up to one year while managing storage. That access period should not be treated as a guarantee that all services will work normally. The general Microsoft storage-quota rules state that an account over its cloud-storage quota cannot upload, edit or sync new OneDrive files, while existing files become read-only.

An over-quota account can also be unable to send or receive Outlook.com email, even if its separate mailbox storage is not full; incoming messages may be returned to the sender. Microsoft also says that a OneDrive account can be frozen after three months over the storage limit and that files may be deleted after six months. Follow the deadline and warnings displayed for the affected account rather than relying on a general time frame.

Before a triggering renewal, upgrade or repurchase, do one final check: confirm the date, collect current totals from all members, allow for imminent growth and verify every offline archive. If you buy additional capacity, do it before urgent uploads are required. If the dashboard still shows an unexpected quota after 48 hours, pause non-essential uploads and contact Microsoft support instead of testing the limit with files you cannot replace.