If Yahoo is not working, several factors could be causing the issue. Here are steps to fix it:

Check Internet Connection: Ensure you have a stable internet connection. If it's slow or inconsistent, restart your router.

Clear Browser Cache and Cookies: Old cache or corrupted cookies may prevent Yahoo from loading properly. Clear them through your browser settings.

Update Your Browser: Make sure your browser is up-to-date to avoid compatibility issues with Yahoo.

Disable Extensions: Browser extensions may interfere with Yahoo. Disable them temporarily to see if that resolves the issue.

Check Yahoo's Server Status: Yahoo services may be down. You can check the Yahoo System Status page for updates.

Try Another Browser or Device: If the issue persists, switch to another browser or device to determine if it’s a localized problem.

Update Yahoo App: If using the Yahoo app, ensure it's updated to the latest version.

By following these troubleshooting steps, you should be able to resolve most common issues with Yahoo not working.  How to Fix Yahoo not Working?