A file in SharePoint says it is archived. Here is how to get it back.
Someone opens a document from a library they use every week and gets a message that the file is archived. Or the file simply refuses to open in Word or Teams with no explanation at all. Nobody remembers archiving anything, and the site itself is working normally.
This is Microsoft 365 Archive working at the file level. File-level archiving is switched on by default for every SharePoint site in a tenant that has Microsoft 365 Archive enabled, and any colleague with edit permission on the library can archive a file, or every file in a folder, in two clicks. Getting the file back is usually simple, but it is not instant, and there is a catch that bites the second time round.
If the message names the whole site rather than one file, you are looking at site-level archive instead. That message, "A SharePoint Administrator archived this site", needs an administrator to fix and is covered in how to restore or reactivate an archived SharePoint site.
What "archived" means for a single file
When a file is archived by Microsoft 365 Archive, its content moves to Microsoft's archive storage tier. The file stays listed in the library with its name, metadata and version history, it still appears in search results, and its permissions are unchanged. What you lose is the ability to open it. Microsoft's own description is blunt: "End users cannot directly access archived content. When a user tries to access archived content, they see a message indicating that either the site or the file is archived."
Two details explain why the symptom is so often "the file just won't open":
- Microsoft notes that "for some Microsoft 365 applications, there is no clear indicator that a file is archived." Archived files are not supported in Word and PowerPoint for the web, in Teams, in the OneDrive and SharePoint mobile apps, in OneDrive sync on macOS, in OneDrive sync on Windows 10 and earlier, or in older Office desktop versions. In those places the file fails quietly.
- The most reliable way to confirm the state, in Microsoft's words, is "navigating to the underlying SharePoint site or OneDrive account". Open the library in a browser and the archived status is visible.
Archived files are also excluded from Microsoft 365 Copilot. Microsoft's FAQ says plainly that "archived content isn't used by Microsoft Copilot", so a file in this state will not appear in any Copilot answer until it is reactivated.
How the file got archived
There are three ways, and the first surprises people.
- A user archived it. Users with edit permission on a site that has file-level archiving enabled can select one or more files and choose the archive action. On a folder, the "Archive all files" action archives every file inside it, including subfolders, up to 20,000 items. A tidy-up by a well-meaning colleague is the most common cause of a single archived file in an active library.
- An administrator or a policy archived it. Administrators can archive files across a site, and lifecycle rules built on Microsoft 365 Archive can do the same on a schedule.
- A file was archived along with its site. In that case the whole site shows the site-level message, and the route back is different.
Certain file types cannot be archived at all: OneNote notebooks, SharePoint pages and SharePoint agents.
How to reactivate an archived file
Any user with read permission on the file can reactivate it. No administrator is needed.
- Open the SharePoint site, or the OneDrive account, that holds the file in a web browser. Do not try from Word, Teams or the mobile app.
- Select the file in the library.
- Choose Reactivate from the command bar or the file's menu.
- Wait. Microsoft states that "reactivation can take up to 24 hours to complete", and "the user who initiated the reactivation receives an email when the process is finished."
To bring back every file in a folder, select the folder and choose Reactivate all files. Read permission is enough. Scheduling the job typically takes about ten minutes, files can then take up to 24 hours to reactivate, and for large folders Microsoft allows up to 48 hours for the whole process. The folder cap is 20,000 items, and a site can process at most 500,000 archive or reactivate actions a day.
The catch: 120 days, and no storage saving
Two things about file-level archive are not obvious from the library view.
A reactivated file cannot be archived again for 120 days. If the file was archived to save space, it will now sit in active storage for four months before any policy or user can archive it again. Plan library clean-ups around this, and warn users that reactivating a whole folder to find one document undoes the archiving for all of them.
File-level archive does not reduce the site's storage. Microsoft's FAQ states that file-level archive "can't be used to reduce storage usage or store data beyond a site's allocated quota." Archived files still count against the site and the tenant. If the reason for archiving was a storage warning, file-level archive did nothing for it, and the guide to what to check when SharePoint says storage is almost full is the better starting point.
On cost: Microsoft removed the SharePoint reactivation fee on 31 March 2025, so bringing a file back does not add a line to the Azure bill. Archived storage is metered at $0.05 per GB per month once the tenant's combined active and archived usage passes its included allocation. The current figures, states and limits are kept up to date in the Microsoft 365 Archive reference.
For administrators: reducing accidental archiving
- Decide whether users should have the archive action at all. Microsoft's management documentation covers the per-site file archiving setting; if a library holds active work, turn it off there.
- Tell users what the archived state looks like in a browser, since the desktop and mobile apps give them nothing to go on.
- For archived sites, set a reactivation request URL with
Set-SPOTenant -ArchiveRedirectUrlso users who hit the site-level message get a Request to reactivate button pointing at your service desk instead of a dead end. - Watch the 120-day lock when you plan storage work. A library reactivated in bulk in September cannot be re-archived until January.
The file-level alternative that restores in one click
The reason file-level archive frustrates people is the wait, the lock, and the fact that it does not free storage. Squirrel is built for the same job with the opposite trade-offs.
| Microsoft 365 Archive, file level | Squirrel | |
|---|---|---|
| Where the content goes | Microsoft's archive tier, inside your tenant's SharePoint storage | An Azure Blob Storage account in your own subscription |
| What stays in the library | The file entry, marked archived and unopenable | A stub with the same name, metadata and dates |
| Who restores it | Any user with read access | Any user with permission on the library, including guests |
| How long a restore takes | Up to 24 hours | Immediate on the default Azure tiers, no rehydration wait |
| Restore fee | None since 31 March 2025 | None from Squirrel |
| Reduces SharePoint storage | No | Yes, the bytes leave SharePoint |
| Re-archive lock after restore | 120 days | None; rules re-archive when the file goes cold again |
| Copilot | Excluded until reactivated | With Nutshell, a summary stays in the index so Copilot can still find and cite the document |
| Where it works | Not in Word and PowerPoint for the web, Teams, mobile apps or macOS sync | Stubs open from SharePoint in the browser, OneDrive sync and Teams; the restored file opens anywhere |
Squirrel archives document-library content on rules you set, by age, size, path, file type or label, and preserves version history, metadata and permissions through the round trip. It works alongside Microsoft Purview retention policies and carries retention and sensitivity labels through archive and restore. What it does not do is archive OneNote, site pages, site assets or lists, and stubs are not shown inside the Office desktop or web apps, so users find and restore from the library or Teams.
Frequently asked questions
Q: Why does a SharePoint file say it is archived?
A: Because it was archived by Microsoft 365 Archive at the file level, either by a user with edit permission, by an administrator, or by a policy. File-level archiving is enabled by default on every site once Microsoft 365 Archive is turned on in the tenant. The file's content has moved to Microsoft's archive tier and it cannot be opened until someone reactivates it.
Q: Who can reactivate an archived SharePoint file?
A: Any user with read permission on the file. Open the site or OneDrive in a browser, select the file, and choose Reactivate. A folder can be reactivated in one action with Reactivate all files.
Q: How long does it take to reactivate an archived file?
A: Microsoft states up to 24 hours, and the person who started the reactivation gets an email when it finishes. Reactivating a large folder can take up to 48 hours in total.
Q: Why won't an archived file open in Teams or Word?
A: Archived files are not supported in Teams, Word and PowerPoint for the web, the mobile apps, OneDrive sync on macOS or older Office and sync clients, and those applications often show no indication that the file is archived. Open the library in a browser to see the status and reactivate.
Q: Does file-level archive free up SharePoint storage?
A: No. Microsoft's documentation states that file-level archive cannot be used to reduce storage usage or store data beyond a site's quota. Archived files still count against the site and the tenant. Site-level archive moves usage into the archive tier; an external archive such as Squirrel removes the bytes from SharePoint altogether.
Q: Why can't I archive the file again after reactivating it?
A: Reactivated files are locked out of archiving for 120 days. The lock applies to every file reactivated, including all the files in a folder reactivated in bulk.
Next steps
Related reading
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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