Here are some common troubleshooting techniques you may do to Fix Yahoo not Working
Make sure you have a reliable internet connection by checking it. By checking to see if other websites load properly, you may test your connection.
Cache files that have accumulated in your browser might occasionally interfere with the functioning of websites. Clear the cookies and cache in your browser. This option is normally located in the settings or preferences of your browser.
Refresh your browser: Use the most recent version of your web browser, please. Some websites may not work properly with outdated browsers.
Disable browser add-ons: Some add-ons or extensions for browsers may interfere with the functioning of Yahoo. Disable any installed extensions momentarily, then attempt to visit Yahoo once more.
Change your web browser: If the issue still exists, use a new browser to visit Yahoo. This might assist in determining if the issue is exclusive to your browser or more widespread.
Check for service interruptions: To discover whether there have been any reported service interruptions or difficulties impacting Yahoo, visit the Yahoo Help Community or social media channels.