This feature notifies Internet Explorer (IE) users of the end of support for this browser. These users will see an informational message that IE support is ending before August 17, 2021 (the publicly announced official end of support date for IE) followed by a warning that support has officially ended. Organizations are encouraged to keep these notifications live unless IE is mandated for their users, in which case you can choose to suppress these notifications and rely on internal processes for migrating your user base to Microsoft Edge or another modern browser.