SharePoint site access requests do nothing when accepted.

Dear @Josh Potts,

Thanks for the update. Regarding this issue, I believe it relates to your organization's SharePoint backend rather than standard settings.

As a fellow user, I cannot check the tenant for you. Since this issue affects all users across the tenant, I recommend opening a support ticket with Microsoft via the Microsoft 365 Admin Center; if you do not have Global Admin privileges, please contact your organization's IT department to have them create the ticket for you.

Ticket Support: Log in the Microsoft 365 Admin Center > Support > Help & Support. You can raise support ticket at: https://admin.microsoft.com/#/support/requests   

• When you open a support ticket, please make sure to turn off the Support Assistant (AI) in the help panel.  
• Several users have reported issues when the Support Assistant is turned on the system sometimes fails to display the “Contact Support” option.

After clicking on "Help & Support" button, you can type "I need agent support via phone or email". After that, you can click on "Contact support" 

• Choose contact method: "Phone" 
• Fill all the information in this contact support details, please describe your situation carefully so they will have enough information to help you. 
• Finally, click on "Contact me"
• After completing them, you will receive an email appointment for a meeting to review this issue professionally together. 
• For more details, you could refer to this article: Get support for Microsoft 365 for business 

I hope your issue will be resolved by Microsoft soon.

Dear @Josh Potts,

Good day! Welcome to Microsoft Q&A forum!

Based on your description, I understand that SharePoint site access requests are being approved by site owners, but the requested users are not receiving the granted permissions or any notification that access has been approved. This issue appears to affect site access requests only, while file and folder access requests continue to work as expected.

To understand the situation better and provide you with the most suitable support, could you confirm the following information: 

• Is this occurring on a single SharePoint site or across multiple sites?
• Are all users affected, or only specific users?
• Are there any error messages shown to the site owner during the approval process?
• Have you recently made any changes to site permissions, groups, or sharing settings?
• Is the affected site a Team site, Communication site, or a site connected to a Microsoft 365 Group?
• Have you tested the behavior with a different user account by submitting a new site access request, and if so, does the issue occur consistently?

Your confirmation would be very helpful in ensuring you receive the most suitable support!If you’re able to share a bit more about your situation, I might be able to suggest some helpful next steps. 

Kindly let me know when there are updates or if you need further assistance. Any updates you’re able to share would be really helpful. I appreciate your time and look forward to hearing how things are going! 

Thank you for your time and patience.