Accessing ArcGIS Server through ArcGIS Web Adaptor located in a perimeter network returns the following error:
Could not access any GIS Server machines. Please contact your system administrator.
The following are possible causes for this issue:
- Insufficient hardware resources on the server hosting ArcGIS Server may cause a loss of connectivity.
- Windows Firewall rules do not allow access for ports 443 and 6443 on the ArcGIS Server machine.
- Certificate name mismatch - common name (domain name) in the certificate does not match the address in the address bar of the browser.
- ArcGIS Web Adaptor starts before ArcGIS Server, and is unable to establish a connection to the machine.
Solution or Workaround
The solutions provided are specific to each situation described above.