If you have deleted files from OneDrive or SharePoint, but those files still appear in a Preservation Hold Library, you may wonder why they are still taking up storage or why you cannot permanently remove them. This behavior is usually related to Microsoft 365 retention policies, retention labels, or eDiscovery holds.
The Preservation Hold Library is designed to keep copies of content that users have deleted or modified when Microsoft 365 needs to retain that content for compliance purposes. Because of this, simply opening the library and pressing Delete usually is not the right solution.
If you are trying to manage these files from Windows, remember that Windows is only the location where you may access synced OneDrive content. The retention mechanism is controlled through OneDrive, SharePoint, and Microsoft Purview.
In this guide, you will learn what the Preservation Hold Library does, why files remain there, and how administrators can safely remove files when the applicable retention requirements have ended.
To remove files from a Preservation Hold Library,
- First, determine which retention policy, retention label, or eDiscovery hold is keeping the content.
- To do this, check the applicable Microsoft Purview retention settings and confirm that the content is no longer required to be retained.
- To remove the files from normal OneDrive or SharePoint storage, remove or change the applicable retention requirement only when you are authorized to do so.
- After the retention requirement is removed, allow Microsoft 365 time to process the change and clean up eligible content.
- If the files are still present, check for additional retention policies, holds, or compliance requirements that may still apply.
If you are a regular user, your best option is usually to contact your Microsoft 365 administrator. If you are an administrator, you can investigate the retention configuration in Microsoft Purview and determine why the content is being preserved.
Step 1: Confirm Where the Files Are Being Preserved
Before changing anything, determine whether the files are actually in the Preservation Hold Library and whether they belong to OneDrive or SharePoint.
Open the appropriate Microsoft 365 location and sign in with the account that has permission to manage the site or service. For a SharePoint site, go to SharePoint > Your Site > Site contents and look for the Preservation Hold Library if it is exposed to your account.
For OneDrive, remember that OneDrive for work or school uses SharePoint technology behind the scenes. A user’s OneDrive storage is therefore subject to many of the same retention mechanisms.
If you are looking at the files through Windows File Explorer, do not assume that deleting a synced copy will permanently remove the preserved version. Windows is simply displaying synchronized content. The actual retention decision is being handled by Microsoft 365.
Step 2: Check Whether a Retention Policy Applies
The next step is to identify whether a retention policy is responsible for preserving the files.
Administrators can open Microsoft Purview and review the organization’s data lifecycle and retention configuration. Look for policies that apply to SharePoint sites, OneDrive accounts, Microsoft 365 locations, or specific content.
The exact settings can vary depending on the organization’s Microsoft 365 configuration and the administrator’s permissions.
A file may remain preserved because a retention policy says that content must be kept for a particular period. In other cases, a retention label may have been applied to the content.
Do not disable a retention policy simply because you want to recover storage space. First confirm what the policy requires and whether the retention period has actually ended.
Step 3: Check for an eDiscovery or Legal Hold
If no obvious retention policy explains the files, check whether an eDiscovery case, legal hold, or other compliance hold is involved.
A hold can prevent content from being permanently deleted even when a user has already removed the original file.
Go to Microsoft Purview > eDiscovery and review the relevant cases and holds if your administrator account has access to these settings. Look for holds that may apply to the SharePoint site, OneDrive account, user, or content involved.
If an active legal or compliance hold exists, the files should remain preserved until the authorized administrator determines that the hold can be released.
This is particularly important in business environments because deleting preserved information prematurely can create a compliance problem.
Step 4: Remove or Change the Applicable Retention Requirement
If you have confirmed that the content no longer needs to be retained and you have the necessary authorization, you can address the applicable retention policy, retention label, or hold.
The exact procedure depends on what is protecting the content. You may need to modify a retention policy, remove an applicable retention label, or release an eDiscovery hold.
Do not simply delete the Preservation Hold Library itself. The library exists because Microsoft 365 needs it for preservation purposes, and the correct solution is to change the retention condition that is causing content to be preserved.
After making an approved change, Microsoft 365 may need time to process it. The files may not disappear immediately.
Step 5: Allow Microsoft 365 to Process the Change
Once the applicable retention requirement has ended or been removed, give Microsoft 365 time to process the change.
Cloud services do not always update every retention-related location immediately. Depending on the configuration, policy processing and cleanup can take time.
Avoid repeatedly deleting and restoring files while waiting for the change to take effect. That can make it harder to determine whether the retention configuration has actually changed.
If you are working with a large organization, the Microsoft 365 administrator may also need to wait for policy propagation before the Preservation Hold Library reflects the updated configuration.
Step 6: Check for Additional Policies or Holds
If the files remain after you believe the retention requirement has been removed, go back and check the configuration carefully.
A common reason for this behavior is that more than one retention mechanism applies to the same content. For example, one policy may have been removed while another policy or hold continues to preserve the files.
Review the applicable Microsoft Purview retention policies, retention labels, eDiscovery holds, and SharePoint or OneDrive retention settings.
You should also verify that the policy applies to the correct site or OneDrive account. Removing an unrelated policy will not necessarily affect the files you are trying to clean up.
Step 7: Handle the Windows Side Separately
If your goal is to free up space on a Windows computer, there is an important distinction between local storage and Microsoft 365 cloud storage.
If OneDrive is syncing files to your PC, you may be able to use OneDrive’s storage-management features to make files online-only. This can reduce the amount of disk space used by local copies without permanently deleting the cloud content.
For example, in Windows File Explorer, you can right-click an eligible OneDrive file or folder and use the appropriate OneDrive Files On-Demand option.
However, making a file online-only does not remove it from the Preservation Hold Library. It only changes how the file is stored locally on your Windows computer.
Therefore, if your goal is to reduce PC disk usage, manage OneDrive synchronization separately. If your goal is to permanently remove retained Microsoft 365 content, address the retention configuration instead.
Step 8: Verify That the Files Are No Longer Required
Before considering the cleanup complete, verify that the files are not subject to another retention requirement.
This is especially important for business, legal, financial, HR, healthcare, or regulated data. A file that appears unnecessary from a user’s perspective may still be required by an organization’s retention schedule.
After the applicable retention requirement has expired or has been legitimately removed, Microsoft 365 can eventually clean up eligible preserved content according to its retention processing.
If the content still remains after an appropriate processing period, an administrator should investigate the policy configuration rather than attempting to bypass the Preservation Hold Library.
FAQs
Can I delete files directly from the Preservation Hold Library?
Normally, you should not treat the Preservation Hold Library as a standard document library. Microsoft 365 controls the preservation process, and the correct way to remove retained content is to address the retention policy or hold responsible for preserving it.
Can I delete Preservation Hold Library files from Windows?
No. Windows File Explorer does not provide a method to override Microsoft 365 retention requirements. If OneDrive is synchronized with Windows, deleting a local copy does not necessarily remove the preserved cloud copy.
Why do deleted OneDrive files still appear in the Preservation Hold Library?
This usually happens because a retention policy, retention label, or hold requires Microsoft 365 to preserve the content even after the user deletes the original file.
Can I delete the entire Preservation Hold Library?
You should not attempt to remove the library as a workaround. The library is associated with Microsoft 365’s content-preservation process. Remove or allow the applicable retention requirement to expire instead.
How do I permanently delete a file from OneDrive?
If no retention or legal hold applies, you can normally delete the file through OneDrive and then manage the applicable Recycle Bin locations. However, if a retention requirement applies, the content may continue to be preserved even after ordinary deletion.
Why is the Preservation Hold Library using so much storage?
The library can contain preserved copies of files that users have deleted or changed. Organizations with long retention periods, large amounts of data, or extensive file activity can therefore see substantial storage associated with preserved content.
What if I cannot see the Preservation Hold Library?
That can be normal. Access to the Preservation Hold Library is restricted, and its visibility depends on your permissions and Microsoft 365 configuration. A regular user may not have access to it.
Does emptying the Windows Recycle Bin remove the preserved files?
No. Emptying the Windows Recycle Bin and removing retained Microsoft 365 content are separate processes. Windows Recycle Bin cleanup does not override SharePoint or OneDrive retention policies.
Bottom Lines
The key thing to remember is that the Preservation Hold Library is not a normal Windows or OneDrive folder. It exists to preserve content that Microsoft 365 has been instructed to retain.
If you are trying to delete these files permanently, first identify the retention policy, retention label, eDiscovery case, or other hold responsible for keeping them. If the retention requirement has legitimately ended, an authorized Microsoft 365 administrator can address that requirement and allow Microsoft 365 to process the cleanup.
If your only concern is freeing up space on a Windows PC, you do not necessarily need to permanently delete the cloud content. OneDrive Files On-Demand can help reduce local disk usage while keeping the files available in Microsoft 365.
Most importantly, do not try to bypass Microsoft 365 retention controls simply to remove files faster. Check the retention requirement first, make only authorized changes, and allow Microsoft 365 time to process the resulting cleanup.