The latest releases of ERP-Scale use new geographically redundant URLs for licence activation URLs (using Azure traffic manager). The current URLs will continue to work (as they are the eventual endpoint) with older builds. You will need to verify the new URLs before installing any build including or after ERP-Scale PSE V4.0.2 Build 21084 or ERP-Scale PQS V4.0.1 Build B21092
The new URLs are:
Please check if you need to update your firewall rules to allow access before installing.