Microsoft 365 Archive now lets you move individual SharePoint files into a cheaper cold storage tier while keeping them fully discoverable. It reached General Availability for SharePoint Online, and for most tenants it switches on by default. If your SharePoint storage bill keeps climbing because nobody ever deletes anything, this is the release that finally gives you a middle option between ‘keep paying full price’ and ‘delete and pray’.
I have lost count of the storage reviews where the conclusion was the same: 80% of the files have not been touched in years, but nobody is brave enough to remove them. Cold storage is the grown-up answer to that problem, and now it works at the single-file level.
What is file-level archiving in Microsoft 365 Archive?
File-level archiving in Microsoft 365 Archive moves individual SharePoint files into a cold storage tier instead of archiving an entire site. The files leave your primary SharePoint storage, so they stop consuming your active quota, but they remain searchable and compliant and can be reactivated when someone needs them.
This complements the site-level archive that already existed. Before, archiving was an all-or-nothing decision per site. Now you can target the specific files that are cold, which is far closer to how real document libraries actually age.
How does file-level archiving work?
A new ‘Archive’ action appears in SharePoint on the web for users with edit permissions, and reactivation is available to users with read permissions. Here is the practical flow:
- A user with edit rights selects an eligible file in SharePoint on the web and chooses ‘Archive’.
- The file moves into the Microsoft 365 Archive cold storage tier and stops counting against active SharePoint storage.
- When someone needs it, a user with read permissions reactivates it.
- Reactivation completes within 24 hours, except for files archived in the last 7 days, which come back instantly.
Nothing about governance changes in the background. Retention labels, sensitivity labels, eDiscovery, permissions and audit logging all keep applying to the file, including while it sits in the archive tier.
Who is affected, and is there a license to buy?
All Microsoft 365 commercial and education tenants with SharePoint Online and Microsoft 365 Archive enabled are affected. There is no new license to purchase. File-level archive consumption is billed through the existing pay-as-you-go pricing model for Microsoft 365 Archive, so you pay for what you archive rather than buying a SKU.
That billing detail matters more than it looks, which is the heart of the Paul-Take below.
When is Microsoft 365 Archive file-level archiving rolling out?
This should be rolling out in July 2026 according to Microsoft. It is a worldwide General Availability release.
| Stage | Timing | What to do |
|---|---|---|
| GA rollout begins | Early July 2026 | Confirm scope settings before the Archive action appears for users |
| GA rollout completes | Late July 2026 | Monitor archive activity and the pay-as-you-go bill |
How to prepare (Admin Tips)
- Confirm the basics first. Make sure Microsoft 365 Archive is enabled and pay-as-you-go billing is configured in the Microsoft 365 admin center, otherwise the feature has nothing to bill against.
- Decide your scope before July. At GA this is enabled by default for every SharePoint site in tenants with Microsoft 365 Archive, unless you previously scoped it. If you do not want the Archive action everywhere, use tenant-level or per-site controls via PowerShell.
- Brief the helpdesk on reactivation. The 24 hour reactivation window (instant for files archived in the last 7 days) will generate tickets if nobody warned the service desk.
- Watch the cost curve. Archiving is a billable action. Heavy archiving can move your bill in both directions, so treat it as a storage strategy, not a one-click cleanup. Our breakdown of SharePoint Embedded archival costs is a useful companion here.
- Keep compliance scoped. Because labels, retention and eDiscovery still apply, your records strategy carries over, but it is worth reviewing how this interacts with adaptive scopes for SharePoint DLP in Microsoft Purview.
The Paul-Take
Read the default setting twice. At General Availability, file-level archiving is switched on for every SharePoint site in tenants that have Microsoft 365 Archive, unless you already reduced the scope. Convenient, yes, but archiving is a billable action under pay-as-you-go, so ‘on everywhere by default’ is also ‘billable everywhere by default’.
This is genuinely a good feature. Cold storage with full discoverability and unchanged compliance is exactly what large SharePoint estates need. But the win is only a win if you drive it on purpose. The teams that decide which sites and libraries should expose the Archive action, set a rough policy for what counts as cold, and brief their helpdesk, will quietly cut their storage bill. The teams that let it run tenant-wide and hope for the best will spend July explaining an invoice nobody forecast.
If you only do one thing before the rollout, scope it deliberately.
Frequently Asked Questions
Does archiving a file delete it? No. The file moves to a cold storage tier and remains discoverable and compliant. It can be reactivated by a user with read permissions.
How long does it take to get an archived file back? Reactivation completes within 24 hours, except for files archived in the last 7 days, which reactivate instantly.
Do retention and sensitivity labels still apply after archiving? Yes. Retention labels, sensitivity labels, eDiscovery, permissions and audit logging all continue to apply, including while the file is archived.
Is file-level archiving enabled automatically? Yes. At GA it is enabled by default for all SharePoint sites in tenants with Microsoft 365 Archive, unless administrators previously scoped the enabled sites.
What does it cost? There is no new license. Consumption is billed through the existing pay-as-you-go pricing for Microsoft 365 Archive.
MVP Reference List
- Microsoft 365 Roadmap ID: 477371 (https://www.microsoft.com/en-us/microsoft-365/roadmap?id=477371)
- Manage Microsoft 365 Archive (Microsoft Learn): https://learn.microsoft.com/microsoft-365/archive/archive-manage?view=o365-worldwide