Hi @IniobongNkanga-8038 ,
Welcome to Q&A forum!
To block sharing for a specific SharePoint site, you can configure the site permissions to restrict sharing. Here are the steps to do this:
- In the SharePoint site, select the gear icon, and then select Site permissions.
- Under Sharing settings, select Change how members can share.
- Choose the option that allows only site owners to share files, folders, and the site.
- Select Save.
For your reference: Limit sharing in Microsoft 365
Good day!
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