"Access Denied" to Access Requests list or “Request approval failed” when you process a pending request in SharePoint Online

You have a Microsoft SharePoint Online site on which the Allow access requests setting is enabled.

When users who have Full Control permissions to the site clicks Access requests and invitations in Site Settings, they receive the following error message:

Also, when users browse to the Access Requests list and then click Approve or Decline for a pending request, they receive the following error message:

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To resolve this issue, users must be either site collection administrators or be members of the Owners group for the site. The Owners group must also have permissions to access the Access Requests list. Use the following solutions as appropriate for your specific configuration.

- Check if user have site collection administrator permission

If an affected user should be a site collection administrator, go to the following Microsoft website for more information about how to manage administrators for your sites: Manage administrators for a site collection

Add the user to the Owners group for the site

If the user should be a site owner, you must add the user to the Owners group for the site. To do this, follow these steps:

     1. As a user who can change site permissions, browse to the affected site or site collection. Click the gear icon for the Settings menu, and then click Site settings.

     2. Click Site permissions.

     3. Click the Owners group for the site.

     4. Click New.

     5. In the Share dialog box, enter the user account of the user who you want to add to the group. Then, click Share.

     6. Test to verify that the user can now access the list and approve or decline requests.

- Make sure that the Owners group has permissions to the Access Requests list

If the Owners group is changed or was removed from the Access requests list, you must add the Owners group permissions for the list. You must also make sure that the affected user is included in the Owners list. To do this, follow these steps:

     1. As a user who has the Manage Permissions Permission Level on the affected site and who also has access to the Access Requests list (for example, a Site Collection administrator), browse to the Access Requests list in Internet Explorer.

     2. Press F12 to open the F12 Developer Tools window.

     3. Click the Network tab, and then press F5 to enable network traffic capturing.

     4. Refresh the Access Requests page in Internet Explorer. After the page has loaded, press Shift+F5 to stop capturing network traffic.

     5. In the Developer Tools window, double-click the first result in the URL list. This URL ends in "pendingreq.aspx."

     6. In the Developer Tools window, click Response body.

      7. In the search box, type pagelistid:, and then press Enter.

      8. Copy the GUID that follows the pageListId. The GUID will be between an opening brace ( { ) character and a closing brace ( } ) character as follows: {pageListId} {58f0f052-7f38-4ab8-8384-e79c456f167e}

Note Include the opening and closing brace characters when you copy the GUID. This GUID is the identifier for the SharePoint Online Access Requests list for your organization.

      9. In the browser address bar, enter https://<URL<URL of affected site or site collection>/_layouts/15/ListEdit.aspx?List=<{GUID}>, and then press Enter.

     10. On the Settings page, click Permissions for this list.

     11. Make sure that the Owners group for the site is included in the list of permissions for the Access Requests list. If the Owners group for the site collection does not exist, click Grant Permissions, enter the name of the Owners group for the site in the Share dialog box, and then click Share.