microsoft account whether sign in or sign up

MARUFABDALLA-6533 0 Reputation points
2026-10-10T15:05:06.3566667+00:00

Request Id: 8b2e49e4-32fb-4ac5-a3f9-565fb46d0800

Correlation Id: 9260468c-eeea-4f38-8f51-ede6ab6b8970

Timestamp: 2026-10-10T14:50:26Z

Message: AADSTS900561: The endpoint only accepts POST requests. Received a GET request.

Microsoft Security | Microsoft Entra | Microsoft Entra ID
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  1. AI answer

    2026-10-10T15:05:24.73+00:00

    AADSTS900561 means the sign-in flow reached an endpoint that accepts POST requests, but a GET request was sent instead. In sign-in scenarios, this is commonly caused by a broken browser sign-in session, stale cookies/cache, blocked third-party cookies, or a browser extension interfering with authentication.

    Try these steps in order:

    1. Start a fresh sign-in session
      • Close all browser tabs and windows.
      • Open a new InPrivate/Incognito window.
      • Sign in again from the normal Microsoft sign-in page instead of an old bookmark or saved redirect.
    2. Allow cookies
      • If the browser blocks third-party cookies, the authentication flow can fail.
      • In Edge: Settings > Privacy, search, and services > Cookies and turn off Block third-party cookies.
      • In Chrome: Settings > Privacy and security > Third-party cookies and select Allow third-party cookies.
    3. Clear browser cache and cookies
      • Clear cached files and cookies, especially for Microsoft sign-in sites.
      • Then retry the sign-in.
    4. Disable browser extensions temporarily
      • Privacy, ad-blocking, or script-filtering extensions can interrupt the sign-in flow.
      • Disable them temporarily and test again.
    5. Try another browser, device, or network
      • Test from a different browser.
      • If needed, switch between Wi-Fi and mobile data.
      • If the error appears only in one app, uninstall it and reinstall the latest version.
    6. Use another sign-in method if available
      • On the sign-in page, select Other ways to sign in.
      • Available methods can include PIN, security key, mobile app approval, or email code.

    If this is happening in an app integration or custom sign-in flow, also verify that the authentication request is using the correct Microsoft Entra endpoint and that the app is not sending users to an endpoint with the wrong HTTP method.

    AI-generated content may be incorrect. Read our transparency notes for more information.

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