List Item Attachments Are Missing: Root Cause and Fix

When you open a SharePoint list item and the attachments you uploaded are no longer visible, you cannot access the files you need for your work. This problem occurs when the list item attachment feature is disabled at the list level, a content type setting blocks attachments, or a site policy removes older attachments. This article explains the three root causes and provides the exact steps to restore missing attachments in SharePoint lists.

Why List Item Attachments Disappear

SharePoint stores list item attachments in a hidden attachments folder inside the list. When attachments are missing, one of three things happened. The list administrator turned off the attachments feature for the entire list. A content type configuration blocks attachments for that specific item type. Or an information management policy deleted attachments based on a retention rule. Each cause requires a different fix.

List-Level Attachment Setting Is Turned Off

Every SharePoint list has a master switch for attachments in the Advanced settings page. When this switch is set to Off, users cannot add new attachments, and existing attachments stop appearing in the item form. The files remain in the attachments folder but are hidden from view.

Content Type Attachment Setting Blocks Attachments

If the list uses custom content types, each content type has its own attachment setting. An administrator may have set the content type to not allow attachments. This overrides the list-level setting. Attachments that were added before the change become hidden.

Information Management Policy Deletes Attachments

SharePoint site collection administrators can create information management policies that automatically expire or delete list item attachments after a specified period. If a policy is active, attachments older than the retention period are permanently removed. This action cannot be undone.

Steps to Restore Missing List Item Attachments

Follow these steps in order. Start with the simplest check and proceed only if the issue is not resolved.

Check and Enable the List Attachment Setting

1. Open the list settings
   Navigate to the SharePoint list where attachments are missing. Click the gear icon in the upper right and select List settings.
2. Open Advanced settings
   Under General settings, click Advanced settings.
3. Verify the Attachments setting
   Locate the Attachments section. If the radio button next to Disabled is selected, attachments are turned off for the entire list. Select Enabled and click OK at the bottom of the page.

Check and Enable the Content Type Attachment Setting

1. Open the list settings
   Go back to List settings for the same list.
2. Select the content type
   Under Content Types, click the name of the content type used by the items with missing attachments. The default content type is Item.
3. Open Advanced settings for the content type
   On the content type page, click Advanced settings.
4. Set Attachments to Enabled
   In the Attachments section, select Enabled. Click OK.

Check Information Management Policy for Attachments

1. Go to the site collection
   You must be a site collection administrator to view policies. Navigate to the top-level site of the site collection.
2. Open Site settings
   Click the gear icon and select Site settings.
3. Open Site collection features
   Under Site Collection Administration, click Site collection features.
4. Activate Information Management Policy feature
   If the Information Management Policy feature is not active, click Activate next to it. If it is already active, click Manage next to the feature.
5. Check the list policy
   On the Information Management Policy Settings page, select the list where attachments are missing. Review the policy rules. If a retention rule deletes attachments after a period, the attachments are permanently gone. You cannot recover them. To prevent future loss, edit the policy to remove the attachment deletion rule or extend the retention period.

If Attachments Are Still Missing After the Main Fix

Attachments Were Added Before the Attachment Feature Was Disabled

If attachments were added when the feature was enabled and later the feature was turned off, the files remain in the hidden attachments folder but are not visible in the item form. Re-enabling the feature as described above makes them visible again. If they still do not appear, the files may have been deleted by a site policy or manually removed.

List Item Attachments Folder Was Deleted

Each SharePoint list has a hidden folder named Attachments inside the list folder. If a user with edit permissions deleted this folder, all attachments for all items are gone. Check the site recycle bin or the second-stage recycle bin. If the attachments folder is there, restore it. If it is not, the files are permanently lost.

Attachments Are Missing Only in a Specific View

The attachments column may be hidden in the current list view. Go to the list, click the list tab in the ribbon, then click Modify View. Under Columns, make sure the Attachments column is checked and its position is set to show. Save the view.

Setting	Enabled	Disabled
List-level Attachments	All items can have attachments	No items can have attachments; existing attachments are hidden
Content type Attachments	Items of this content type can have attachments	Items of this content type cannot have attachments; existing attachments are hidden
Information Management Policy	Attachments are retained according to policy rules	Attachments may be deleted automatically after a set period

You can now identify which setting caused attachments to disappear and apply the correct fix. Start with the list-level attachment setting, then check the content type, and finally review the information management policy. To avoid future issues, document the attachment settings for each list and set retention policies carefully so important attachments are not deleted automatically.