Why does my yahoo mail not working?

There are several reasons why Yahoo mail may not be working. One of the common reasons is an unstable internet connection or server issues. Another reason could be outdated browser cache and cookies, which can be resolved by clearing the cache and cookies from the browser settings. It could also be due to an incorrect password or username, so double-checking the login credentials is important. Sometimes, Yahoo may also temporarily block access to an account if it detects suspicious activity.