Sign-in & Login Problems

How to Resolve the HTTP Response Error from login.microsoftonline.com in SharePoint

Steve K Oct 7, 2026 870 views

Question details

The user needs to fix a SharePoint connection failure that returns an HTTP response error from the Microsoft authentication server.

How to Resolve the HTTP Response Error from login.microsoftonline.com in SharePoint

Product: Microsoft SharePoint
Device & OS: not provided
Scenario: Attempting to connect or authenticate to SharePoint using a client application or browser.
Observed behavior: The connection fails with the error message 'An error occurred while receiving the HTTP response' when accessing login.microsoftonline.com/extSTS.srf.

Before you start

Verify that your internet connection is stable and check the Microsoft 365 Service Status page to ensure there are no ongoing authentication outages affecting SharePoint.

Solution 1Recommended

Document and Analyze Diagnostic Network Details

Gathering the exact network request details and steps leading to the error helps pinpoint whether the issue is caused by authentication protocols, network communication blocking, or the client application itself.

Because this error occurs at the authentication endpoint (extSTS.srf), it is crucial to isolate the failure point by capturing the exact HTTP traffic.

Document the exact trigger steps

Write down the exact sequence of actions taken in the application before the error appeared, including the specific SharePoint URL being accessed.

Capture the error message

Take a full-screen screenshot of the error message to capture the exact wording and any accompanying error codes.

Use a network tracing tool

Use a tool like Fiddler, Wireshark, or your browser's Developer Tools (F12) to monitor network traffic while recreating the error.

Extract request and response headers

Locate the failed request to login.microsoftonline.com/extSTS.srf. Copy the request headers, request body, authentication method, and the server's response details for further analysis or to provide to IT support.

Document and Analyze Diagnostic Network Details

IT Support Handoff: If you are on a corporate network, providing these captured logs to your IT department will significantly speed up the troubleshooting process.

Solution 2

Verify TLS Settings and Clear Credentials

Outdated security protocols or corrupted cached credentials often block successful HTTP responses from Microsoft's secure login servers.

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Frequently Asked Questions

What causes the login.microsoftonline.com/extSTS.srf error?

This error typically occurs due to network interception (like strict corporate firewalls or proxies), outdated TLS security protocols on the client device, or corrupted authentication tokens during the SharePoint login process.

How can I view the HTTP request and response details?

You can capture these details by using network tracing applications such as Fiddler or Wireshark. Alternatively, if you are connecting via a web browser, press F12 to open the Developer Tools, go to the Network tab, and reproduce the error to see the traffic.

Can outdated TLS settings affect SharePoint authentication?

Yes. Microsoft 365 and SharePoint require TLS 1.2 or higher for secure connections. If your operating system or application is configured to use older protocols like TLS 1.0 or 1.1, the connection to Microsoft's login servers will fail and return an HTTP response error.

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