Error: Could not access any Portal machines. Please contact your system administrator
Accessing the Portal for ArcGIS website returns the following error:
Upgrading Portal for ArcGIS can cause this error. The Portal for ArcGIS configuration altered after upgrading the Portal for ArcGIS machine.
Solution or Workaround
Clear the web browser cache. The error can occur when leftover information from the previous version of the website is cached by the web browser. The following documents describe how to clear the cache for specific web browsers:
In certain instances, the ArcGIS Web Adaptor must be re-installed or reconfigured to reflect the newly configured Portal for ArcGIS. The following document describes this: Configure ArcGIS Web Adaptor.
The following document describes the considerations to be taken before upgrading Portal for ArcGIS: Upgrade Portal for ArcGIS.