When the language in Portal has been switched the Portuguese (Brazil) or Portuguese (Portugal) there is not an option to switch back to English-English

対処法

1. Access the Portal for ArcGIS home page.
2. Navigate to Organization > Settings > General.
3. Under Organization defaults, switch the Portuguese (Brazil or Portugal).
4. While the language is set to Portuguese you will see the following: English - English (US - US).
5. Under the Formato de numero e data switch this to any other selection, and it switch the language back to English.
6. Then, switch Number and Date Format back to US - US.

再現の手順