yahoo redirect

Malwarebytes is free.

You have adware/malware installed. Use  Malwarebytes Anti-Malware for Mac. It may be necessary to run more than one scan. After scanning a couple of times, restart the computer and test. If necessary, follow the manual instructions.  Do not download any other programs that are listed in the articles.  

See if the below helps. I would scroll down to the below or you might fall asleep.

Step 1. Eliminate Yahoo Redirect from Windows.    https://www.2-spyware.com/remove-yahoo-redirect-virus.html#h-windows

Step 2. Delete Yahoo Redirect from Mac OS      https://www.2-spyware.com/remove-yahoo-redirect-virus.html#h-mac-os-x

Step 3. Uninstall Yahoo Redirect from Internet Explorer      https://www.2-spyware.com/remove-yahoo-redirect-virus.html#h-internet-explorer

Step 4. Remove Yahoo Redirect from Microsoft Edge.      https://www.2-spyware.com/remove-yahoo-redirect-virus.html#h-microsoft-edge

Step 5. Erase Yahoo Redirect from Mozilla Firefox.    https://www.2-spyware.com/remove-yahoo-redirect-virus.html#h-mozilla-firefox

Step 6. Get rid of Yahoo Redirect from Google Chrome.    https://www.2-spyware.com/remove-yahoo-redirect-virus.html#h-google-chrome

Step 7. Eliminate Yahoo Redirect from Safari.    https://www.2-spyware.com/remove-yahoo-redirect-virus.html#h-safari

https://www.2-spyware.com/remove-yahoo-redirect-virus.html.     https://www.2-spyware.com/remove-yahoo-redirect-virus.html

Go to Safari Preferences/Extensions, uninstall any you don't recognize, and then turn all extensions off. Test. If okay, turn the extensions on one by one until you figure out what extension is causing the problem.

 Safari/Preferences/General - see what the Home Page is set to. If something you don't recognize, see if you can replace it with something you want.

 Safari menu/Clear History.

 System Preferences and remove any Profiles you see.

Hello MNCat,

Thanks for that info and for choosing the Apple Support Communities. If I understand correctly, you are unable to use Google to search in the Safari app, as the search goes to Yahoo instead on your Mac. If you have macOS 10.13 installed on your Mac as you show in your profile, please go to System Preferences > App Store and enable "Install system data and security updates." Then go to System Preferences > Users & Groups and remove all unexpected 3rd party Login items in your user profile. Then restart your Mac and test your situation again:

Login Items preferences

Cheers!

Thanks for replying, MNCat, and that additional info, it really helps! If you haven't already, please go to the Safari menu in the Safari app, then choose the Clear History option and clear all history. Then quit the Safari app, hold the shift key on your keyboard and then open Safari again while holding the shift key and test your issue again.

If Safari doesn't load a page or webpage items are missing

Have a great day and thanks for using the Apple Support Communities!

Thanks for that update, MNCat! Since you're still having this issue, please contact Apple for further assistance with your situation:

Contact Apple Support 

Cheers!