Microsoft Cuts Shared OneDrive Storage By Up To 4TB
Microsoft is replacing individual OneDrive allowances on its Family and Premium subscriptions with a shared 2TB pool, cutting the maximum combined storage by 4TB and leaving some households facing extra costs or decisions about where to keep their files.
What Is Changing?
Previously, Microsoft 365 Family and Premium allowed up to six people to receive 1TB each, giving a fully shared subscription 6TB in total. Under the new arrangement, everyone draws from the same 2TB allowance.
Microsoft 365 Pro provides a shared 5TB pool, while Basic and Personal retain their individual allowances of 100GB and 1TB respectively. Additional storage purchased by subscription members is added to the shared pool.
The biggest reduction therefore affects Family and Premium subscriptions with six members making full use of their allowances. Their combined included capacity falls by two-thirds, although the practical impact depends on how much they actually store.
Why Does Microsoft Call This More Flexible?
Microsoft’s explanation is that separate allowances can leave storage unused while another member runs out of space. Its support page states, “Shared storage helps ensure that one person doesn’t run out of space while other members have unused storage available.”
That addresses a limitation of the previous arrangement. For example, someone with 1.2TB of photos and documents couldn’t simply borrow unused capacity from another member’s allocation. However, a shared pool allows that person to exceed 1TB, provided enough space remains.
That said, pooling storage and reducing its total are actually separate decisions. Six people storing 500GB each would previously have been comfortably within their individual limits, but their combined 3TB would exceed the new allowance by 1TB.
For lighter users, the flexibility may be useful. For households with several large photo libraries or document collections, it means less room to grow without paying more.
When Will Subscribers Be Affected?
The shared model applies to new and upgraded subscriptions from 8 October 2026. Existing Family and Premium subscribers generally move across when their subscriptions first renew on or after 2 May 2027, with Microsoft promising advance notification.
The renewal date matters because the change does not take effect for every existing customer on 2 May. An eligible subscription renewing later would normally move at that later renewal.
Upgrading can bring the change forward. For example, Microsoft says moving from Family to Premium before May 2027 triggers the shared model, whereas a downgrade alone does not trigger an early transition. Customers considering a plan change should therefore check its storage consequences before proceeding.
Will Shared Storage Expose Private Files?
It should be noted here that sharing the allowance doesn’t give other members access to someone’s documents or photographs. As Microsoft says, “While storage quotas are shared, files remain private.”
Each person retains their own account and can access only their own files unless someone explicitly shares content. The change concerns available capacity, rather than creating a communal folder.
However, members’ storage habits become more closely connected. One person uploading a large video collection could leave less space for everyone else, making occasional checks of combined usage more important.
What Happens If The New Limit Is Exceeded?
Microsoft says affected customers will receive notifications and can free space, purchase additional capacity or change their subscription. Storage can be expanded to a total of 10TB.
Its transition guidance says customers exceeding the limit can continue accessing their files for up to one year while managing their storage. That shouldn’t be interpreted as a promise that uploading, editing and synchronisation will continue without restrictions throughout that period.
Some existing Family and Premium customers may also receive transitional bonus storage in eligible markets. However, the support page does not specify how much they will receive or provide complete eligibility details, so customers should rely on their own notification rather than assume additional capacity is guaranteed.
Anyone planning to leave should arrange alternative storage before their subscription expires. Microsoft’s cancellation guidance says the standard free cloud allowance is 5GB, meaning cancellation could create a much larger shortfall than the announced reduction.
What Does This Mean For Your Business?
This announcement concerns the named consumer subscriptions, rather than an equivalent reduction across Microsoft 365 business plans. Microsoft’s UK business pricing still lists 1TB of cloud storage per user. However, sole traders and small organisations should check which subscriptions actually hold their working files, particularly where personal accounts have become part of everyday operations.
The immediate task is to establish current usage, renewal dates and likely future requirements. Comparing alternatives should include the cost of moving files, maintaining access and supporting users, as well as the advertised storage price. Before deleting anything to reduce usage, customers should confirm that important files have complete, accessible copies elsewhere and understand whether deletion will also remove synchronised copies.
The key point here is that a cloud subscription’s value can change after customers have built their routines around it. Keeping clear records of where information is stored and maintaining a practical way to move it makes future changes easier to manage. Shared storage may suit some users, but decisions should reflect the capacity and access they need, rather than the flexibility promised in the announcement.
