Microsoft has announced that support for Internet Explorer (IE) will end on the following dates.
After this date, you will need to browse the website using Edge's IE mode or another browser (Edge, Google Chrome, etc.) without using IE.
IE will not be able to connect to Office 365 before this date. Therefore, we recommend that you switch without waiting for the end of the support date.
[End of support date]
Windwos10 (Windows 8.1 etc. does not apply)[Reference]