Scheduling and managing events using Outlook.com calendar
Hi everyone,
Thank you for posting your concern here and we're sorry for the delayed response.
I understand the inconvenience this may have caused you regarding the refresh rate of your subscribed calendars. For this issue, Please be informed that the refresh rate depends on the subscribed calendar you added on your Calendar in Outlook.com. As for initial troubleshooting, we suggest that you remove the subscribed calendar and add it back again and check if it will work after then.
If issue still persists and for other customers experiencing the same issue, we suggest that you refer to this link and go Contact Us for further assistance. You may also create your own thread so that we can better address your concern regarding this as we need more information necessary for investigation about this issue. We may need to ask you to provide some details inside the private section for security reason that's why we are suggesting you to create your own thread.
Your understanding and cooperation is much appreciated.
Regards.