Why Can't I Open Yahoo! Mail? - Reference.com
www.reference.com › world-view › can-t-open-yahooMar 30, 2020 · If Yahoo! Mail will not open it is most often due to a browser issue, an incorrectly entered username or password, or because of a problem with the Yahoo! servers. To start, try clearing the cache and reloading the browser page, then verify that the correct username and password are being used. If still encountering trouble, it's best to contact Yahoo! customer support for additional ...