What Happens to an Unlicensed OneDrive Account
Microsoft automatically forces unlicensed OneDrive accounts into read-only mode after 60 unlicensed days, archives them after 93, removes them from eDiscovery at 275, and makes them subject to deletion at 365 cumulative unpaid days. Once archived, neither administrators nor end users can reach the content until someone assigns a licence, enables billing, or reactivates the account.
The clock starts the moment a licence is removed or the user is deleted in Microsoft Entra ID. That matters more than it sounds, because removing the licence while keeping the account is the single most common offboarding shortcut in Microsoft 365 - the tactic people use specifically to hang on to a leaver's files. It is now the thing that starts a deletion timer on them.
This guide sets out the exact timeline, what it costs to get the data back, the retention assumption that no longer holds, and how to find out how many accounts in your tenant are already affected.
The Timeline
| Milestone | What happens |
|---|---|
| Day 1 | The cumulative nonpayment clock begins. For accounts already unlicensed and unpaid on 1 July 2026, it began that day. For accounts unlicensed after that, it starts when the licence is removed or the user is deleted in Entra ID. |
| Day 60 | The account is placed in read-only mode. |
| Day 93 | The account is archived, or moved to the recycle bin depending on account and retention state. |
| Day 275 | The account is no longer available in eDiscovery. |
| Day 365 | The account is subject to deletion after 365 cumulative unpaid days. |
Microsoft's own worked examples of the earliest deletion-risk date: an account unlicensed on 1 January 2026 or 1 July 2026 reaches risk on 1 July 2027; one unlicensed on 1 August 2026 reaches it on 1 August 2027.
The 365 days are cumulative, not consecutive. If you enable billing for a period, the count pauses while the account is paid and resumes when it stops. Microsoft is explicit that toggling billing to dodge enforcement is not supported.
These changes do not apply to EDU, GCC, or DoD customers.
What It Costs to Get the Data Back
This is where the surprise lands. Once you enable billing for unlicensed OneDrive accounts, two charges apply:
- A one-time reactivation fee of $0.60 per GB for the account you reactivate.
- A monthly storage fee of $0.05 per GB applied to every unlicensed account in the organisation that has been unlicensed for more than 93 days, from that month onward.
That second charge is the one that catches people out: reactivating a single account switches on storage billing across the whole estate of unlicensed accounts, not just the one you needed.
Microsoft's own example makes the scale clear. An organisation with 100 unlicensed OneDrive accounts, each holding 1 TB, needs one account back:
- Reactivation of that single 1 TB account: $614.40 one-time.
- Storage across all 100 TB: $5,120 per month, ongoing.
Two further details worth knowing. Unlicensed OneDrive accounts cannot use unused SharePoint storage quota, even if Microsoft 365 Archive is configured in the tenant, so you are billed for the full consumed storage. And a reactivated account stays active for 30 days, then archives again automatically.
The free route: if the archived account still has an associated user, simply assigning that user a valid licence reactivates the account automatically within 24 to 48 hours, with no reactivation fee and no billing enablement required. That only works while the identity still exists. If the user was deleted from Entra ID, there is no one to license, and the paid path is the only path.
The Retention Assumption That No Longer Holds
Many offboarding processes assume a retention policy or legal hold is a safety net. For unpaid, unlicensed OneDrive accounts, Microsoft has removed that assumption.
Archived accounts honour retention policies, retention settings and litigation holds when billing is enabled. Where billing is not enabled and the account remains unpaid, Microsoft states that accounts still retained at 365 days become subject to deletion even if retention policies, settings, or holds exist on the account.
The consequence is spelled out plainly in Microsoft's documentation: if deletion occurs, eDiscovery hold records remain but the held OneDrive content becomes unrecoverable. Retention assignments can still look healthy in the admin centre while the site they point at no longer exists, and new searches simply return nothing from that location.
Anyone relying on "we have a retention policy, so the data is safe" for departed users' OneDrive should read that twice.
You Cannot Opt Out
A reasonable question is whether leaving Microsoft 365 Archive switched off avoids this. It does not. Microsoft is direct about it: enabling Microsoft 365 Archive has no impact on the enforcement of unlicensed OneDrive accounts. They are enforced regardless, including read-only mode and eventual archiving. You can choose whether to enable billing; you cannot prevent the archival.
Microsoft 365 Archive and unlicensed OneDrive billing are two independent toggles in the Microsoft 365 admin centre, and the enforcement flow is identical whether Archive is on or off.
How to Find Out How Many You Have
Most tenants discover this by accident. Check deliberately instead:
- Sign in to the SharePoint admin center.
- Go to Reports and select OneDrive accounts.
- Download the CSV, or select View more details for the interactive view.
There are two report pages and they show different things, which explains the common confusion about mismatched numbers. The top-level report lists accounts that are at least 93 days unlicensed and indicates the storage that will be billed if you enable billing. The detailed report lists all currently unlicensed accounts, including those under 93 days, and lets you see URL, storage used, unlicensed date, unlicensed reason and archive status, and delete or reactivate accounts directly.
The report also tells you why each account is unlicensed - no owner, owner deleted from Entra ID, licence removed by admin, or duplicate account - and what is blocking deletion, such as a retention period, a Purview policy or hold, an active lock, or an owner still active in Entra ID.
What to Do About It
For accounts you have already got:
- Still needed and the user still exists? Assign a licence. It reactivates free within 24 to 48 hours.
- Not needed? Delete the account. An archived account can be deleted without reactivation, unless a retention policy blocks it, in which case you get an error.
- Needed but the identity is gone? This is the expensive case. Enable billing, reactivate, move the content somewhere durable, and accept the $0.60/GB plus ongoing $0.05/GB/month across the estate.
- Duplicate accounts from staff moving between regions or entities are worth clearing out deliberately, since they archive and incur charges like any other.
For the process that created the problem, the fix is to change the order of operations at offboarding.
The Offboarding Fix
The trap exists because the standard cost-saving move - remove the licence, keep the account, keep the data - is now the trigger. The data does not become safer by sitting unlicensed in Microsoft's cloud. It becomes read-only in two months, inaccessible in three, undiscoverable in nine, and deletable in a year, with a per-GB fee to touch it in the meantime.
The durable pattern is to get the data out before the licence comes off.
Chipmunk automates exactly that. When an account is disabled in Microsoft Entra ID, it archives the user's OneDrive, Exchange Online mailbox and Teams chats into Azure Blob Storage in your own subscription, then the licence can be reclaimed cleanly. Because the data is in storage you own, none of the above applies to it: no 60-day read-only state, no 93-day archival, no reactivation fee, no 365-day deletion clock, and no dependency on whether someone remembered to enable billing. The archive stays searchable across every departed user, with an audit trail on every access, and retention and immutable tiers available in your own Azure. Chipmunk deploys from the Azure Marketplace into your own environment.
The wider workflow is in the Microsoft 365 departed user archiving guide, and the licence-cost side in stop paying for Microsoft 365 licences after staff leave.
Frequently Asked Questions
Why was my OneDrive account archived by Microsoft?
Because it was unlicensed for 93 days. Microsoft automatically places unlicensed OneDrive accounts into read-only mode at 60 unlicensed days and archives them at 93. The clock starts when the licence is removed or the user is deleted in Entra ID. Neither admins nor users can access archived content until the account is relicensed or reactivated.
How do I unarchive an unlicensed OneDrive account?
If the account still has an associated user, assign that user a licence: it reactivates automatically within 24 to 48 hours, with no reactivation fee and no billing enablement needed. If the identity was deleted, you must enable pay-as-you-go billing for unlicensed OneDrive accounts and reactivate, which costs $0.60 per GB for that account plus $0.05 per GB per month across all unlicensed accounts over 93 days. Reactivated accounts stay active for 30 days before archiving again.
Will Microsoft actually delete unlicensed OneDrive accounts?
Microsoft's documentation states accounts are "subject to deletion" after 365 cumulative unpaid days, with the earliest deletion-risk dates being 1 July 2027 for accounts unlicensed on or before 1 July 2026. The wording is conditional rather than a guarantee of a specific date, which is why treating the 365-day mark as a hard deadline is the safer planning assumption.
Does a retention policy protect an unlicensed OneDrive?
Only while billing is enabled. Microsoft states that if billing is not enabled and an account is still retained at 365 unpaid days, it becomes subject to deletion even if retention policies, settings or holds exist. If deletion occurs, eDiscovery hold records survive but the held content is unrecoverable.
Can I avoid this by not enabling Microsoft 365 Archive?
No. Microsoft states that enabling Microsoft 365 Archive has no impact on enforcement. Unlicensed accounts are put into read-only mode and archived regardless. The only choice you have is whether to enable billing, not whether archival happens.
How do I find unlicensed OneDrive accounts in my tenant?
In the SharePoint admin center, go to Reports and select OneDrive accounts. The top-level report covers accounts at least 93 days unlicensed and shows the storage that would be billed; selecting View more details lists every currently unlicensed account with its unlicensed reason, archive status and what is blocking deletion.
Do unlicensed OneDrive accounts use my SharePoint storage quota?
No. They cannot draw on unused SharePoint storage quota, even where Microsoft 365 Archive is configured in the tenant, and archived unlicensed accounts are billed for the full amount of storage consumed.
Related reading
- OneDrive archiving in 2026: the options and the gaps
- OneDrive deleted files: how to recover them
- Microsoft 365 departed user archiving
- OneDrive quota enforcement July 2026 (MC1310684)
- Stop paying for Microsoft 365 licences after staff leave
Check Before the Clock Runs Out
Run the OneDrive accounts report today and see how many are already past day 60. Then see how Chipmunk archives departed users' data into your own Azure storage so the clock never applies. Questions: sales@smikar.com.
Mark Smith co-founded SmiKar Software in 2015 and has spent the past decade helping organisations solve Microsoft 365 data management challenges. He works with the SmiKar team to build solutions for SharePoint archiving, storage optimisation, governance and compliance, supporting customers from growing businesses through to Fortune 500 enterprises.
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