A SharePoint file subject to a Microsoft Purview retention policy cannot be permanently deleted even by an administrator. The recycle bin is simply bypassed, and the content is silently preserved in a hidden library until the hold expires. Below is a stage-by-stage breakdown of the standard deletion lifecycle and how an active retention hold changes each stage.
Standard Deletion Lifecycle (No Retention Policy)
When no retention hold is active on a site or file, SharePoint follows the standard two-stage recycle bin process:
| Stage | Location | Who can restore | Who can delete permanently | Counts toward quota | Time limit |
|---|---|---|---|---|---|
| Active content | Document library or list | N/A (content is live) | Users with delete permission | Yes | No expiry |
| First-stage recycle bin | Site-level recycle bin | Users with read permission; site owners | Users who deleted the item; site owners | Yes | 93 days from deletion (combined) |
| Second-stage recycle bin | Site collection recycle bin | Site collection admins; SharePoint admins | Site collection admins; SharePoint admins | Yes | Remainder of 93-day window |
| Permanently deleted | Purged from SharePoint | Not recoverable via SharePoint | N/A (already gone) | No | N/A |
The 93-day window is shared across both stages from the moment of the original deletion. An item does not receive a fresh 93 days when it moves from the first stage to the second. Once the window expires or an administrator empties the second-stage bin, the item is permanently purged and cannot be recovered through any native SharePoint mechanism.
See the recycle bin retention reference for a full breakdown of the first and second stage limits, storage thresholds, and administrator-triggered clearing behavior.
How Microsoft Purview Retention Policies Change Deletion Behavior
When a Microsoft Purview retention policy or retention label places a hold on a SharePoint site or on specific content within it, the deletion lifecycle changes significantly. SharePoint supplements the standard recycle bin flow with the Preservation Hold Library, a hidden library activated in every site collection under a hold.
| Scenario | What happens to the content | Is it still visible to the user? | Who can access the held copy? |
|---|---|---|---|
| User deletes a file on a site under a retain-and-delete policy | SharePoint copies the file to the Preservation Hold Library before deleting it from the user's view. The hold is maintained on the copy. | No - the user's view shows the deletion as complete | Compliance administrators via the Preservation Hold Library |
| User modifies a file on a site under a retain-and-delete policy | SharePoint copies the previous version to the Preservation Hold Library before saving the new version | Only the new version is visible | Compliance administrators via the Preservation Hold Library |
| Admin empties the recycle bin on a site under a hold | Items move to the Preservation Hold Library if not already held there. Items not subject to the hold are deleted normally. | No | Compliance administrators |
| Retention period expires (retain-and-delete policy) | SharePoint automatically deletes held content and moves it through the standard recycle bin process before final purge | Appears in recycle bin briefly, then purged | Standard recycle bin access applies during the brief window |
| Retention label set to "retain only" (no delete) | Content is retained indefinitely. No automatic deletion occurs. Admin must manually remove the label to allow deletion. | Yes - visible in the library | N/A (content is not deleted) |
| eDiscovery hold applied to a site | All content on the site is preserved in the Preservation Hold Library at the time of modification or deletion. No time limit on the hold. | Modifications are visible; deletions remove from view but preserve in hold library | eDiscovery managers and compliance administrators |
Key points on retention policy and quota
Content in the Preservation Hold Library counts toward the site collection's storage quota, exactly like active content and recycle bin items. On sites where documents are edited frequently, this adds up quickly - each version change under a hold creates a new preserved copy. Long-duration policies can generate far more Preservation Hold Library storage than admins anticipate.
Administrators cannot manually empty the Preservation Hold Library while a hold is active. The retention engine manages held content and releases it only when the hold period expires or the policy is removed.
Retention policy and recycle bin: interaction summary
| Action attempted | Without retention hold | With active retention hold |
|---|---|---|
| User deletes a file | File moves to first-stage recycle bin | File moves to recycle bin AND a copy is preserved in Preservation Hold Library |
| Admin empties first-stage bin | Items move to second-stage bin | Items move to second-stage bin; held copies remain in Preservation Hold Library |
| Admin empties second-stage bin | Items permanently deleted | Standard bin items deleted; held copies remain in Preservation Hold Library |
| 93-day recycle bin expiry | Items permanently deleted | Standard bin items purged; held content remains in Preservation Hold Library until hold expires |
Frequently Asked Questions
Can an administrator permanently delete a SharePoint file that is under a retention hold?
No. When a Microsoft Purview retention policy places a hold on SharePoint content, that content cannot be permanently deleted for the duration of the hold. If a user or admin deletes the file, SharePoint moves it to the Preservation Hold Library rather than the standard recycle bin. It remains there until the hold expires, accessible only to compliance administrators.
What is the Preservation Hold Library in SharePoint Online?
The Preservation Hold Library is a hidden library in every SharePoint Online site collection that becomes active when a retention policy or eDiscovery hold is applied. When content subject to a hold is deleted or modified, SharePoint copies the original version to this library before proceeding with the user's action. Compliance administrators can access the library directly to review held content.
Does SharePoint recycle bin storage count toward the site quota?
Yes. Content in both the first-stage and second-stage recycle bin counts toward the site collection's storage quota. To reclaim storage, administrators must empty the recycle bin, not just delete items from the active library. ShareMaster Space Master includes a tenant-wide storage breakdown that shows recycle bin consumption separately from active content.
Does Microsoft Purview retention storage count toward the SharePoint quota?
Yes. Content in the Preservation Hold Library counts toward the site collection's storage quota. Long-running retention policies on active sites can generate significant hidden storage consumption in this library, particularly when documents are frequently edited.