Why is my SharePoint storage still full after deleting files?

Deleted files sit in the recycle bins for 93 days and still count. The storage figure also updates only every 24–48 hours. If a retention policy applies, deleted files are copied to the Preservation Hold Library, which also counts.

What counts towards SharePoint site storage?

Current file content, every version of every file, both recycle bins, the Preservation Hold Library, list items and attachments, and site assets/pages. The number shown in the admin centre is the total of all of them.

How do I see what is using storage in a SharePoint site?

Site settings → Storage Metrics lists every library and list with its total size including versions, and lets you drill into folders. The SharePoint admin centre shows only the site total.

Is SharePoint storage the same as OneDrive storage?

No. OneDrive is per user (1 TB each by default). SharePoint storage is one pool for the whole tenant: 1 TB plus 10 GB per licensed user, shared by every site.

SharePoint says storage is full but the files don't add up. Where the missing gigabytes are

The library shows 60 GB, the site shows 400 GB, and deleting things changed nothing. The gap is versions, two recycle bins, the Preservation Hold Library and a 48-hour lag. Here is how to see each one.

The admin centre says the site is using 412 GB. You open the document library, select everything, and the total is 60 GB. You delete 30 GB of old exports. The next morning the site is using 412 GB. This post is the list of places the other 350 GB can be, in the order they are usually responsible.

0. The number is two days old

Site storage usage updates on roughly a 24–48 hour cycle. Whatever you deleted this morning will not show until tomorrow or the day after. Before investigating anything, check when you last changed something.

1. Version history

Every version of every file counts in full. A 30 MB deck with 200 versions is 6 GB. In a library where people work on large Office files with autosave, versions are routinely 60–90% of the total. The modern library view shows current file size only; it never shows this.

See it: Site settings → Storage Metrics (/_layouts/15/storman.aspx). Per-file Total Size there includes versions. To quantify it per library, run the ten-minute version audit.

2. The recycle bins

Deleted items stay for 93 days across the site recycle bin and the second-stage bin, and both count against the site. A "clean-up" that deletes 100 GB moves 100 GB into the bin; the site total does not change until day 93 or until an admin empties the second-stage bin.

See it: Site contents → Recycle bin (as a site collection admin, to see everyone's) → Second-stage recycle bin.

3. The Preservation Hold Library

If a Purview retention policy or label applies to the site, deleting or editing a file puts a copy in the hidden Preservation Hold Library. Nothing you delete leaves the site; it changes address. On sites under a multi-year hold this library is often the single largest thing on the site.

See it: https://<site>/PreservationHoldLibrary/Forms/AllItems.aspx as a site collection admin. It also appears in Storage Metrics.

4. Other libraries, lists and pages

Site Assets (images pasted into pages), Site Pages, Form Templates, list attachments, a Teams channel's private-channel site that is technically a separate site collection. Storage Metrics lists them all; the document library is usually not the only one.

5. The tenant pool, not the site

The warning banner says "your organisation is running out of storage", not "this site". SharePoint storage is one pool: 1 TB + 10 GB per licensed user (frontline F licences do not add to it). A site can be fine and the tenant full because forty other sites grew. SharePoint admin centre → Active sites → sort by Storage used.

The quick triage

Connect-SPOService -Url https://contoso-admin.sharepoint.com
Get-SPOTenant | Select-Object StorageQuota, StorageQuotaAllocated
Get-SPOSite -Limit All | Sort-Object StorageUsageCurrent -Descending |
  Select-Object -First 15 Url, StorageUsageCurrent, StorageQuota

That ranks sites. Then Storage Metrics on the top few. Then the version audit on the biggest libraries.

Seeing all five at once

The manual route is four pages, two permission levels and a 48-hour wait between checks. Storage Analyzer runs the same reads from a SharePoint page: what you can see (current content) versus what you are storing (the site total), the version-history estimate, and an "unaccounted for" figure that points at recycle bins and the Preservation Hold Library, with libraries ranked largest first. The site view is free; the version drill-down and CSV export come with a TrimVersions365 key.