With the recent update to Read&Write for Google Chrome adding in new Co:Writer Prediction and Online topics to the toolbar, some new URLs were added to the allow list required for functionality. Please ensure your network admin allows the below URLs.
You can view the remainder of the URLs needed in this documentation
URLs required for Prediction feature and Online Topics:
https://prediction.texthelp.com/
https://en.wikipedia.org/w/api.php?action=opensearch&search=
https://es.wikipedia.org/w/api.php?action=opensearch&search=
https://fr.wikipedia.org/w/api.php?action=opensearch&search=
https://en.wikipedia.org/w/index.php?printable=yes&title=