You can protect your organizational Units from accidental deletion by using Power Shell scripts to apply the protection to many organizational units at once. You can run these Power shell commands by running the Active Directory Module for Windows PowerShell as Administrator and making sure that you have Domain Admins or Enterprise Admins rights.
First type the following command to check which OUs are not protected:
Get-ADOrganizationalUnit -filter * -Properties ProtectedFromAccidentalDeletion | where {$_.ProtectedFromAccidentalDeletion -eq $false} | ft
Type the following command to protect the OUs that you have identified in the above command:
Get-ADOrganizationalUnit -filter * -Properties ProtectedFromAccidentalDeletion | where {$_.ProtectedFromAccidentalDeletion -eq $false} | Set-ADOrganizationalUnit -ProtectedFromAccidentalDeletion $true
After this command is successfully completed, you can re-run the first command to make sure that all Organizational Units (OUs) have been protected.
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