SharePoint Document Issues

Fix SharePoint Attachment Upload Fails on a Labeled List

Maira Mehtab Sep 28, 2026 868 views

Question details

Adding an attachment to a new SharePoint list item fails when the list has a retention label, while items without attachments can be created successfully.

Product: Microsoft SharePoint
Device & OS: not provided
Scenario: Creating a new item and attempting to add an attachment within a SharePoint list.
Observed behavior: The system prevents the attachment from uploading successfully, specifically triggering a failure when a retention label is applied to the list.

Before you start

Verify your user permission level on the SharePoint site to ensure you have the necessary administrative or owner rights required to view and modify site compliance policies.

Solution 1Recommended

Review and Adjust Retention Label Policies

Check the list's compliance policy settings to determine if the retention label restricts editing and adding attachments, and adjust the policy if your organization permits.

This behavior is often expected because retention labels in Microsoft 365 are designed to restrict editing and deletion to preserve records for compliance.

When an item is designated as a locked record by a policy, any modifications—including adding or removing file attachments—are blocked to maintain the integrity of the data.

Access Site Settings

Navigate to your SharePoint site and click on the gear icon (Settings) in the top-right corner, then select 'Site contents'.

Open List Settings

Find the affected list, click the three dots (ellipsis) next to it, and choose 'Settings'.

Review Compliance Details

Under the 'Permissions and Management' section, select 'Apply label to items in this list or library' to review which retention label is currently active.

Contact Administration

If the applied label locks the item as a record and you do not have permission to change it, contact your SharePoint administrator or IT compliance team to request an exception or a policy update.

Organizational Compliance Rules: Do not attempt to bypass retention policies without authorization, as these labels are typically implemented to meet strict legal and regulatory requirements for your organization.

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Frequently Asked Questions

Why does a SharePoint retention label block attachments?

Retention labels often mark list items or documents as immutable 'records' to comply with legal policies. Once marked as a record, the item cannot be altered, which inherently prevents users from adding new attachments.

Can I add an attachment after the labeled list item is created?

If the retention label applies immediately upon creation and locks the item, subsequent edits and attachment uploads will be blocked. You can only add attachments if the specific label allows edits or if the item is temporarily unlocked by an administrator.

How do I know if an item is locked by a retention label?

You can check the item's properties by selecting the list item and opening the details pane (the 'i' icon). The details pane will display the applied retention label and indicate if the item's record status is locked.

Document & File Issues