Troubleshooting startup or sign-in issues for Power Apps

This article helps you resolve some of the common issues that may occur when starting up or signing in to Power Apps.

Common errors

The following are some common errors that may appear when you start up or sign in to Power Apps.

  • You're prompted to sign in every time an app is embedded in another client such as SharePoint and Microsoft Teams.

    The Power Apps open experience starts and halts until you sign-in

  • Error message related to cookie settings.

    Hmmm... Something went wrong.
    Please enable third party-cookies and site data in your browser settings. If you are using Chrome's Incognito mode, you can uncheck the 'Block third-party cookies' option on the Incognito landing page.
    Try again

  • "Sign in required" message when signing in to Power Apps, especially in InPrivate or incognito mode.

    Sign in required
    Please select sign in to continue.
    Session ID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

    AADSTS50058: A silent sign-in request was sent but no user is signed in. The cookies used to represent the user's session were not sent in the request to Microsoft Entra ID. This can happen if the user is using Internet Explorer or Edge, and the web app sending the silent sign-in request is in different IE security zone than the Microsoft Entra endpoint (
    Trace ID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
    Correlation ID: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
    Timestamp: xxxx-xx-xx xx:xx:xxZ

  • "Hmmm … We couldn't sign you in" message.

    Screenshot that shows a We couldn't sign you in error message.

  • "WebAuthoring abnormal termination" message.

    WebAuthoring abnormal termination.

    Client date/time: <Client Time>Thh:mm:ss.sssZ
    Version: 2.0.602
    Session ID: xxxx-xxxxx-xxxxxxx--xxxxxxxx
    description: {"error":{"detail":{"exception":{}},"colno":0,"filename":"<>...",
    "lineno":0,"message":"Script error","initErrorEvent":"[function]","bubbles":false,"cancelBubble":false,"cancelable":false,"currentTarget":"[window]", "defaultPrevented":true,
    "eventPhase":2,"isTrusted":true,"srcElement":"[window]","target":"[window]","timeStamp":1490711965955,"type":"error","initEvent":"[function]","preventDefault":" [function]",
    "errorUrl":"<>... error","setPromise":"[function]","exception":{}}
    stack: null
    errorNumber: 0
    errorMessage: Script error

  • UserInterventionNeeded_CookiesBlocked

  • UserInterventionNeeded_StorageBlocked

  • UserInterventionNeeded_NavigateToAadTimeout

  • UserInterventionNeeded_NavigateToAadDenied

  • UserInterventionNeeded_StorageLost

  • AadError


Try the following steps to resolve the issue:

  1. Enable third-party cookies and local data in your browser or app.
  2. Cached data can sometimes prevent you from signing in. Clear your browser's cache and cookies and try again.
  3. Try signing in with a different browser. For a list of supported browsers, see system requirements.
  4. Check your network connection to make sure it's stable.
  5. If you're getting Microsoft Entra errors, they're usually related to user authentication and authorization. The error page might contain additional information that can help diagnose and fix the problem. To resolve Microsoft Entra errors, you might need assistance from your IT department.

Enable storage of third-party cookies and local data in your browser or app

Power Apps stores some data locally, such as user identity and preferences, leveraging your browser's capabilities. Problems occur if the browser blocks the storage of such local data, or third-party cookies set by Power Apps.

Most browsers allow settings to reflect the changes immediately. You may also need to close all the browser windows and reopen them instead.

To enable this setting for the Power Apps and Dynamics 365 mobile apps for iOS, you need to work through the iOS settings linked to the app rather than through the browser settings for iOS.

These instructions are shown on the following tabs.

  • Option 1: Enable storage of third-party cookies and local data for all sites

    1. Select Settings > Cookies and site permissions.
    2. Expand Cookies and data stored.
    3. Ensure the Block third-party cookies setting is disabled.
    4. If present, remove the following sites from the site-specific cookie configuration under Block and Clear on exit:
      • https://*
      • https://make.*
      • https://apps.*
      • (Only for sovereign clouds) US Government version URLs.
  • Option 2: Create exceptions to allow the storage of third-party cookies and local data for Power Apps and associated services


    The following steps require your Edge browser version to be 87 or above.

    1. Select Settings > Cookies and site permissions.
    2. Expand Cookies and data stored.
    3. Select Add under Allow and add:
      • [*.]
    4. Select Clear browsing data on close.
    5. Ensure Cookies and other site data is disabled. If you want to keep it enabled, select Add instead, and then add:
      • [*.]

Clear your browser cache

The browser cache is stored on your device's hard drive. When you visit a website, your browser downloads certain information that allows it to load faster when you revisit the same website in the future. Some Power Apps features use the browser cache to provide a faster user experience. In some cases, you may want to clear your browser cache. Here are the instructions for different browsers:

Next steps

If your issue isn't listed in this article, you can search for more support resources or contact Microsoft support. For more information, see Get Help + Support.