The portal is unable to establish a connection for the Living Atlas update

Error Message

While updating the content of ArcGIS Living Atlas of the World in Portal for ArcGIS, the following error message is returned. 

Error: The portal is unable to establish a connection for the Living Atlas update. Please check your portal administrator logs and try again later

Cause

This usually happens due to network connectivity issues or proxy/firewall restrictions.

Solution or Workaround

1. Check Internet Access - Ensure the portal machine has internet access and try accessing https://www.arcgis.com and https://livingatlas.arcgis.com from a browser on the portal server machine. 
2. Verify Proxy Configuration - If your organization uses a proxy, make sure it's configured in the Portal Admin Directory or add the proxy settings if missing.
3. C. Firewall and 'Allow' listing - Ensure the following domains are not blocked by your firewall. If not, ask your network/security team to include these for allowable outgoing HTTPS connections:
   • *.arcgis.com
   • *.esri.com
   • livingatlas.arcgis.com
4. Retry the update .