Update

Go to:
MT4 → Tools → Options → Expert Advisors
Enable:
Allow WebRequest for listed URL
Add the following URLs:
https://nfs.faireconomy.media
https://nfs.faireconomy.media/ff_calendar_thisweek.xml
https://www.forexfactory.com
Without this permission, the live economic calendar, news countdown timers, economic news alerts, and Economic Research detail pages may not be available.

MT4 → Tools → Options → Expert Advisors
Allow DLL imports
This is required only for versions that use direct Windows browser opening or the integrated undock function.