Why SharePoint Communication Sites Default to Internal Sharing
Question details
Understand why newly created SharePoint communication sites restrict sharing to the organization by default, even if external sharing is permitted at the tenant level.
- Product
- Microsoft SharePoint
- Device & OS
- not provided
- Scenario
- Creating a new communication site in a tenant where external sharing is already enabled globally.
- Observed behavior
- The newly created communication site defaults to internal organization-only sharing, overriding the broader external sharing allowance.
Ensure you have SharePoint Administrator or Global Administrator privileges to modify the external sharing settings for individual sites in your organization.
Manually Enable External Sharing for Individual Sites
Since there is no global tenant setting to change this default behavior, administrators must manually adjust the sharing settings for each newly created communication site.
Microsoft intentionally defaults communication sites to internal-only sharing. This is a deliberate security measure designed to prevent accidental data loss and unauthorized external access to corporate broadcasts. Currently, there is no built-in feature to alter this default creation behavior universally.
Log in to the Microsoft 365 admin center and navigate to the SharePoint admin center.
In the left-hand navigation pane, expand 'Sites' and click on 'Active sites'.
Find and select the specific communication site for which you want to enable external sharing.
Click on the 'Policies' tab in the site details panel, then select 'Sharing' under the External sharing section.
Change the setting from 'Only people in your organization' to your required level, such as 'New and existing guests', and click 'Save'.
Streamline Your Team's Document Collaboration with WPS Office
If navigating complex SharePoint permissions and internal sharing restrictions is slowing down your workflow, WPS Office provides a free, lightweight, and highly compatible alternative. Easily create, edit, and share documents with external partners without the administrative overhead.
- 1. Download WPS Office: Visit the official WPS website to download the free productivity suite.
- 2. Install the Application: Run the installer file and follow the quick on-screen setup instructions.
- 3. Collaborate Instantly: Open your existing Office documents and use the built-in sharing tools to easily collaborate with external partners.
Frequently Asked Questions
Can I change the default sharing setting for all future SharePoint communication sites?
No, Microsoft currently does not offer a built-in tenant-level setting to change the internal-only default for newly created communication sites. Sharing must be updated on a per-site basis.
Why doesn't my new communication site inherit the tenant's external sharing settings?
For security and data-loss-prevention purposes, Microsoft deliberately restricts communication sites to internal sharing upon creation to ensure sensitive organizational broadcasts aren't accidentally exposed, regardless of broader tenant settings.
Who has the authority to change external sharing for a specific SharePoint site?
Only users assigned the SharePoint Administrator or Global Administrator roles can adjust external sharing policies for individual sites within the SharePoint Admin Center.
Will enabling external sharing on the site automatically share existing files with guests?
No. Changing the site's sharing policy simply allows external sharing to occur. You still need to manually share specific files, folders, or the site itself with external guests.
