1. How to Add a Site Collection Administrator from Within the Site Collection 



This guide explains how to add a user to the list of Site Collection Administrators within your organization’s SharePoint Online tenant. Follow these steps to ensure that the user is granted the appropriate administrative privileges.


Step 1: Access Site Collection Settings

You can add a Site Collection Administrator directly from the site collection itself:

  1. Navigate to the SharePoint site where you want to add the user.
  2. Click the gear icon in the upper right corner of the page.
  3. From the drop-down menu, select Site Permissions.

Step 2: Open Advanced Permissions Settings

Once you’re in the Site permissions tab:

  1. Scroll to the bottom of the page and click on Advanced permissions settings.

This action will open the classic experience view for permissions management.

Step 3: Add a Site Collection Administrator

  1. On the new page, click the Site Collection Administrators button in the ribbon.

This will open a window where you can assign Site Collection Administrators.

Step 4: Enter the User or Group

  1. In the pop-up window, enter the name or email of the user or group you want to designate as a Site Collection Administrator.
  2. When the correct user or group appears, click on the suggestion.
  3. Finally, click OK to confirm the addition.

Important Note

The user must be listed in your organization's directory for this process. If the user does not appear in the search, please make sure they have been added to the organization's directory.

The user is now added as a Site Collection Administrator, granting them full control over the site collection.


2. How to Add a Site Collection Administrator in the SharePoint Admin Center

In addition to adding a Site Collection Administrator directly from the site collection, you can manage site administrators through the SharePoint Admin Center in Microsoft 365. Follow these steps to add a Site Collection Administrator:

Step 1: Access the SharePoint Admin Center

  1. Go to the Microsoft 365 admin center.
  2. In the left-hand menu, expand Admin Centers and select SharePoint.

Step 2: Navigate to Active Sites

  1. Once in the SharePoint Admin Center, click Active Sites from the left-hand navigation panel.
  2. In the list of active sites, locate and click on the site collection where you want to add a Site Collection Administrator.

Step 3: Open Site Admins Settings

  1. On the right-hand side panel of the selected site, go to the Membership tab (previously labeled as Permissions).
  2. Under Site Admins, click the + Add Site Admins button.

Step 4: Add the User or Group

  1. Enter the name or email of the user or group you want to assign as a Site Collection Administrator.
  2. Select the correct user or group from the suggestions that appear.
  3. Click the Add button at the bottom to confirm.

The selected user or group will now have Site Collection Administrator privileges for the specified site collection.



3. How to Add a Site Collection Administrator Using PowerShell

For administrators who prefer automation or need to add multiple Site Collection Administrators across several site collections, PowerShell offers a more efficient way to manage this process. Using the SharePoint Online Management Shell, you can quickly add a user as a Site Collection Administrator.


LinkFixer Advanced does not provide built-in PowerShell scripts for managing Site Collection Administrators. However, you could explore using PowerShell as an external option for automating administrative tasks like adding Site Collection Administrators in SharePoint Online. PowerShell scripts offer flexibility and efficiency, especially for large-scale environments or repetitive tasks. 


For questions or comments, please feel free to email support@LinkTek.com or send a support ticket from within LinkFixer Advanced.