All the Access requests and invitations are stored in a hidden list called “Access Requests” and has three views
- Guest user invitations (Access Requests/pendinginv.aspx)
- History (Access Requests/oldreq.aspx)
- Pending Requests (Access Requests/pendingreq.aspx)
The “Access Requests and Invitations” link under ‘Users and Permissions’ may not be visible due to following 3 reasons.
# Reason 1 : “Access Requests and Invitations” link will not appear until someone actually sends the requests to join the site or document. You can append the text /Access%20Requests/pendingreq.asx to your site url and check if you are receiving page not found error.
Sample url: https://tenant.sharepoint.com/sites/contoso/Access%20Requests/pendingreq.asx
If receive page not found error, then send new Access request to the site, now you can able to see the link.
# Reason 2 : Allow Access Requests may not be enabled.
Go to Site Settings ->Site Permissions ->Access Request Settings. Check Allow Access Requests and type mail address to send all requests.
Now, you can able to see the Access requests and Invitations link.
# Reason 3: If you are experiencing this error in SharePoint 2013/2016 On-Premise server, this option will appear only after you configured incoming/outgoing email server setting in SharePoint server administrator site.
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