Third-party cookies or pop-up blocker errors when accessing Unified Interface apps in a web browser

Applies to:   Power Apps

Symptoms

When you access Unified Interface apps in a web browser, you receive one of the following error messages about cookies and pop-up blockers:

• Something has gone wrong. Check technical details for more details.
  Technical Details
  Session Id: <Session ID>
  Activity Id: <Activity ID>
  Timestamp: <Date Time> GMT-0700 (Pacific Daylight Time)
  {"errorInfo":{"code":"UserInterventionNeeded_CookiesBlocked", "localizedMessage":"Power Apps requires cookies to be enabled. Please enable them in your browser.","timestamp":<Time Stamp>,"description":"Power Apps requires cookies to be enabled. Please enable them in your browser."}} No stack available.

• A <Server Name> window was unable to open, and may have been blocked by a pop-up blocker. Please add this <Server Name> server to the list of sites your pop-up blocker allows to open new windows.

Cause

These issues occur because third-party cookies are blocked in the web browser.

Resolution

To check what browser you are using and the browser settings, go to WhatIsMyBrowser. Then, enable third-party cookies, and make sure that the related sites are not blocked for cookies. For instructions for web browsers and iOS devices, see troubleshooting startup issues for Power Apps.

Third-party information disclaimer

The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.