Five SharePoint and OneDrive Storage Changes Land in November — One of Them Turns Your Warning Lights Off

The five changes, with dates

| Change | What it does | Timing |

|---|---|---|

| Microsoft 365 SharePoint Storage (pay-as-you-go) | Meters SharePoint storage consumed above the tenant quota to a linked Azure subscription. Opt-in, off by default. | Public preview for commercial tenants since June 2026; GA rolling out November 2026 |

| Microsoft 365 OneDrive Storage (pay-as-you-go) | Same model, applied per account above the licensed quota. Admins choose which accounts are enabled. | Public preview from July 2026; GA rollout November 2026, completing early December 2026 |

| OneDrive allowances above 5 TB withdrawn | Accounts previously expanded past the 5 TB entitlement are aligned to the licensed quota; over-quota accounts go read-only. | November 2026 → February 2027 |

| Standard storage for unlicensed OneDrive accounts | Lets admins set how long unlicensed accounts stay active before archiving, and keep a reactivated account active past 30 days. | GA from October 2026 |

| Standalone SharePoint Online and OneDrive Plan 1/2 retirement | End of sale passed; renewals stop; plans eventually stop working. | End of sale 31 May 2026 · end of life January 2027 · end of service December 2029 |

Five items, three of which bill you and two of which can make content read-only. Read together they describe one change: SharePoint and OneDrive storage has stopped being a fixed entitlement and become a consumption line with an enforcement mechanism behind it.

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Start from the number almost nobody can quote correctly

Before the runbook, the uncomfortable part.

Every article we can find about pay-as-you-go storage prints a rate of $0.20 per GB per month. Checked against the primary source, Microsoft's pay-as-you-go pricing page on Microsoft Learn — read on 26 October 2026 — contains exactly one row:

| Service | What's Counted? | What's billed? (USD) |

|---|---|---|

| Agents in SharePoint | The number of messages used | $0.01/message |

That is the whole table. There is no storage rate on Microsoft's pay-as-you-go pricing page. The $0.20 figure traces back through vendor posts to vendor posts.

It may well be right. It is also a number people are about to budget for a GA service on a blog's authority. The committed rate comes from your licensing desk, your CSP, or your own Azure meter once billing is live.

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Who is affected

Everyone on pooled SharePoint storage, eventually. The tenant allowance is 1 TB plus 10 GB per license purchased, across Microsoft 365 Business, Microsoft 365 Enterprise, Office 365, F1/F3 and the standalone SharePoint plans. The maximum per site is 25 TB. Microsoft's own footnote states the consequence of ignoring it: "If your tenant continues to operate above your storage limits, you are at a risk of your environment being put into 'read-only' mode."

The 5 TB change is narrower and sharper. It hits organizations that went through Microsoft Support to expand specific OneDrive accounts beyond the 5 TB entitlement — historically up to 25 TB, requested once an account came within 10% of 5 TB. If you never raised that request, you are not in scope. If you did, it was for a handful of people whose work needed it: a video team, a research group, an archivist. Those are exactly the accounts where a read-only state is least tolerable.

The unlicensed-account changes hit anyone with turnover. They do not apply to EDU, GCC or DoD customers.

Pay-as-you-go is not available everywhere. Both products exclude education, GCC and Microsoft 365 operated by 21Vianet in China — so for those tenants that column is closed, which makes the other two options load-bearing.

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The decision: capacity packs, pay-as-you-go, or clean up

Three doors. They are not interchangeable.

Buy capacity

OneDrive Extra Storage is sold in 100 GB, 500 GB and 1 TB through 6 TB sizes, assigned to a licensed user like any other add-on; a pack cannot be split across users. Office 365 Extra File Storage adds tenant SharePoint storage in 1 GB increments, and is available on GCC, GCC High and DoD plans as well as commercial ones.

Choose this when you need the number to be predictable. A capacity pack is a known monthly cost on a renewal — right for a finance function that will not accept a variable line, and for the named accounts in the 5 TB cohort whose requirement you already know.

The ceiling applies either way: a single user cannot exceed 25 TB — 25,600 GB — under capacity packs or pay-as-you-go.

Pay-as-you-go

Requires an Azure subscription and resource group, Owner or Contributor on the Azure side, and SharePoint Administrator or Global Administrator in Microsoft 365. Create a billing policy in the Microsoft 365 admin center and select Microsoft 365 SharePoint Storage or Microsoft 365 OneDrive Storage at the review-and-create step. For OneDrive you then raise individual storage limits above the licensed quota; only usage above that quota is billed.

Choose this when you cannot predict demand. It is the right tool for a growing estate with lumpy consumption. Then accept its two costs honestly:

It turns off your warning lights. Microsoft Learn: "While your tenant is enrolled in Microsoft 365 SharePoint Storage, you don't receive quota-related email notifications and banner notifications in the SharePoint admin center because the tenant is considered within quota." This is internally consistent — you are never over quota, so there is nothing to warn about — and it removes the one signal most organizations actually act on. The quota email is, in practice, the only storage governance many tenants have. Enabling pay-as-you-go without first standing up an Azure budget and spend alert replaces a free alarm with a silent meter.

It is hard to reverse. Disconnect while over quota and enforcement resumes — immediately, for SharePoint. Six months of unconstrained growth followed by a disconnect is a read-only event, not a return to the status quo.

Clean up and archive

Always available, usually deferred. Version history, abandoned sites, Preservation Hold libraries, recycle bins, and the duplicate OneDrives created when someone transfers between regions or entities — Microsoft's unlicensed-accounts report surfaces those as a Duplicate account category and recommends deleting the ones you do not need.

Choose this first — it is the only option that makes the other two cheaper. The others price the estate you have; this one changes it.

One caveat on Microsoft 365 Archive: it reduces the rate, not the obligation. And unlicensed OneDrive accounts cannot draw on unused SharePoint quota even when Microsoft 365 Archive is configured, so they are billed for the full amount of consumed storage.

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The unlicensed-account lifecycle, with the day numbers

| Milestone | State |

|---|---|

| Day 60 | Account placed in read-only mode |

| Day 93 | Account archived, or moved to the recycle bin depending on account and retention state |

| Day 275 | Account no longer available in eDiscovery |

| Day 365 | Account subject to deletion after 365 cumulative unpaid days |

As of 1 July 2026 a cumulative 365-day nonpayment clock applies. Accounts already unlicensed before that date are in scope, with deletion risk beginning no earlier than 1 July 2027. The clock is cumulative, not consecutive: enable billing and it pauses; disable it and it resumes.

Then the sentence every compliance officer should read for themselves:

> "If billing is not enabled for unlicensed OneDrive accounts, and accounts are still retained 365 days after becoming unlicensed, then the unlicensed accounts will be subject to deletion 365 days after being unlicensed even if retention policies, settings, or holds exist on the OneDrive account."

A legal hold on an unpaid unlicensed OneDrive is not a preservation guarantee. Microsoft adds that if deletion occurs, eDiscovery hold records remain but the content becomes unrecoverable, and retention assignments "can still appear healthy" while the target site no longer exists. That is the worst failure mode a compliance program has: it fails silently, and in the direction of confidence.

Standard storage, GA from October 2026, is the control for this. It sets a tenant-wide active-storage period from 93 to 3,650 days via `Set-SPOTenant -UnlicensedOneDriveAccountsActiveStoragePeriod`, with read-only beginning 33 days before the configured archive date, and keeps reactivated accounts active past the ordinary 30 days via `Set-SPOSiteArchiveState -KeepActiveUntil`. It needs pay-as-you-go billing connected, a separate opt-in in the Microsoft 365 admin center, and SharePoint Online Management Shell 16.0.27600.12000 or higher.

The setting applies retroactively, which is the trap: raising the tenant period reactivates archived accounts inside the new window, and reactivation carries a fee. Microsoft publishes that rate as $0.60 per GB reactivated, archive storage at $0.05 per GB per month, and states that during calendar year 2026 the reactivation fee is waived when Standard storage is enabled.

That is a deadline nobody is framing as one. Extending your unlicensed-account lifecycle before 31 December 2026 is free; doing it in January is not. On Microsoft's own worked example, a single 1 TB reactivation is $614.40 — across a real cohort, not a rounding error.

Microsoft's own recommendation is to keep the default at 93 days unless there is a defined business, legal or compliance need for longer. That is good advice — and "we have a Purview retention policy and assumed it was sufficient" is now one of those needs.

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The 30-day runbook

Days 1–5 — measure, before deciding anything.

Read total and available storage from the Active sites page, remembering that usage excludes the last 24–48 hours and is counted in binary GB. Pull the unlicensed accounts report from Reports → OneDrive accounts → View more details, which lists every currently unlicensed account — not only those past day 93 — with storage used, unlicensed date, reason and archive status. Identify every OneDrive above 5 TB, or above 4.5 TB if you want warning rather than news.

Days 6–10 — find the storage you do not need.

Version history on the largest libraries. Sites with no owner and no activity. Recycle bins and Preservation Hold libraries. The Duplicate account rows in the unlicensed report. The only work here that reduces the bill under all three options.

Days 11–15 — make the decision per population, not per tenant.

Named accounts with a known requirement get capacity packs. Unpredictable growth gets pay-as-you-go. Everything else gets cleaned up or archived. Government and education tenants: capacity packs and cleanup only.

Days 16–20 — build the controls before the billing.

If pay-as-you-go is in the plan, create the Azure budget and spend alert first, then connect billing. The moment billing is live your quota emails stop, and a budget alert is the only thing between a growth curve and an invoice.

Days 21–25 — handle the 5 TB cohort individually.

Few, and important. For each: reduce, buy a pack, or enable pay-as-you-go for that account — and tell the person. A read-only OneDrive discovered mid-deadline is an avoidable escalation.

Days 26–30 — set the unlicensed lifecycle deliberately, and write down what you chose.

Decide the active-storage period on a stated business, legal or compliance basis. If you are extending it, do it inside calendar 2026 while the fee is waived. Record the decision, the reasoning and the date — otherwise the next person assumes 93 days was chosen rather than inherited.

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Our read

Four of these five changes are ordinary commercial housekeeping. Microsoft withdrew an expensive discretionary allowance, retired standalone SKUs it no longer wants to sell, and offered a metered alternative. None of that is unreasonable, and the metered option is genuinely useful for estates that cannot forecast.

The fifth is different, and it has no announcement attached because it is not an announcement — it is a side effect. Enabling pay-as-you-go storage removes the quota notifications that have been doing your storage governance for you. Nothing breaks. No alert fires. The tenant is, by definition, always within quota. And the organizations most likely to reach for pay-as-you-go are those whose storage is growing fastest with least visibility into why.

One line: storage used to tell you when you had a problem, and now it tells your Azure bill. The work is deciding, on purpose, what replaces the thing that used to tell you.

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Want the 5 TB cohort, the unlicensed-account exposure and the pay-as-you-go decision modelled against your actual tenant before November? See SharePoint Support and SharePoint Consulting, or get in touch.

Related: what actually breaks at SharePoint Online scale · Microsoft 365 Archive, file-level GA and the Copilot trade-off · Copilot Credits and who holds the spending pen

Sources

All Microsoft Learn pages below were read on 26 October 2026.

• Buy more OneDrive and SharePoint storage capacity — Microsoft Learn
• Microsoft 365 pay-as-you-go pricing — Microsoft Learn
• Manage unlicensed OneDrive user accounts — Microsoft Learn
• Standard storage for unlicensed OneDrive accounts — Microsoft Learn
• OneDrive retention and deletion — Microsoft Learn
• SharePoint limits (service description) — Microsoft Learn
• Manage site storage limits in SharePoint — Microsoft Learn
• Microsoft draws a hard line for OneDrive storage quotas — Office 365 for IT Pros