The login page for Portal for ArcGIS appears blank

Description

When attempting to log in to Portal for ArcGIS, users are sometimes unable to do so because the home page (https://webadaptor.domain.com/arcgis/home/) appears blank.

Cause

This issue occurs when an expired esri_auth cookie is supplied by the browser. This is common when the token expiration value is set to a very short time in the ArcGIS REST API.

Solution or Workaround

Below are some recommended options for resolving this issue.

Clear browser cache and cookies
Press Ctrl+Shift+Delete to clear the cache and cookies file in the browser, and reload the page. This allows the esri_auth token to be regenerated. This operation may vary with different browsers.

Increase the token expiration value
The esri_auth token is supplied to the browser to authenticate members. To change the token expiration time and allow the token to be valid for a longer time, refer to the following ArcGIS Help document, Portal for ArcGIS: Specify the default token expiration time.