Search Engine Keeps Changing to Yahoo? Here's What to Do

Updated Nov 1, 2026, 8:51 AM EST Russ is an experienced tech writer who still loves discovering new things and embracing new technology. He enjoys sharing his knowledge and helping people make the most of the software, gadgets, and devices that impact their everyday lives. Russ has been working in publishing for more than 18 years, having cut his teeth writing about videogames for Rapide Publishing in the UK. During this time, he wrote reviews, articles, and guides that have been published in the UK, US, and Europe. After leaving Rapide, Russ co-founded a specialist international publishing company called Black Dog Media which produced user guides for subjects that ranged from video games to programming, consumer technology, and home improvement. Russ has written and edited numerous books about Android, Windows 10 and 11, Raspberry Pi, WordPress, iOS, PC maintenance, and macOS, which have been published worldwide. Alongside this, he has also built and managed several e-commerce websites, and written for some of the most-viewed tech websites in the world, including MakeUseOf and About.com (Lifewire). If your default browser homepage and search engine keep mysteriously changing to Yahoo!, your computer is probably infected with a browser hijacker. While resetting the browser might seem to fix the problem, here's how to do the job properly. What is a browser hijacker virus? A browser hijacker is probably one of the least aggressive and destructive types of malware, but that doesn't mean you should allow it to exist on your computer. These things make unauthorized changes to your browser settings so that advertising or a similar page that's beneficial to the malware distributor is shown instead of the one you chose. Because the people who spread this type of virus are somehow benefiting from the change of your search engine or homepage, it's unlikely that a hijacker will cause your computer to crash or become inoperable. It can, however, cause performance problems, and can also be a sign that your computer is infected with other malware. This is not Yahoo's fault, as search.yahoo.com is a genuine page used by millions of people daily. Yahoo simply sees the intermediary website as a referring site, without knowing that you were redirected through it using nefarious means. In this case, the virus is probably the "search.yahoo.com redirect" virus. It will redirect you to the Yahoo homepage via an intermediate website as soon as you launch your browser. And if you click on any of the links on the Yahoo homepage, any revenue from those clicks will be paid to the intermediary website owner. Removing the Yahoo redirect virus Try to work out how the malware got onto your computer in the first place. Browser hijackers are often spread via software bundles. This could be a free app you installed or a browser extension you have added. Sometimes the PUA (Potentially Unwanted App) is made obvious during the installation process; you may be asked if you want to also install some supposedly beneficial tool alongside the app you are installing, or may even be asked if you want to let the app change your search engine or homepage. In other cases, the hijacker can be completely hidden, and you don't have the option to reject its installation. If you've added any new software recently, consider uninstalling it from your computer. Search online for name of the software/extension plus malware to see if anyone else has experienced the same problems, so you can narrow your list of extensions or software to remove. The next thing to do is a complete virus scan using reputable and reliable antivirus software such as Microsoft's Defender Antivirus for Windows 10 or the Windows Security app in Windows 11. Browser hijackers are not particularly sophisticated viruses and shouldn't prove too much trouble for a good antivirus scanner to find and remove. A quick scan will often find browser hijackers, but we would suggest performing a full or complete scan anyway. As browser hijackers are sometimes a sign that your computer has other infections, it is a good idea to let your antivirus software do a full check of your system. Resetting your browser Resetting your browser settings will often fix the problem with your homepage and search engine switching to Yahoo, even though it really only treats the symptoms and not the cause. Once you've removed the virus, find the instructions for your browser below. Chrome Reset Chrome by clicking the three-dot menu button in the top-right corner and choosing "Settings." Navigate to Reset and clean up in the sidebar, then click Restore settings to their original defaults on the right side. Confirm the action by clicking "Reset settings" in the confirmation dialog. Resetting Chrome will revert your startup page, new tab page, search engine, and pinned tabs to factory settings. All Chrome extensions will be turned off, and temporary data like cookies will be cleared. Don't worry, your bookmarks, history, and saved passwords will be intact. To be thorough, select "Privacy and security" in the sidebar, then click "Security" on the right side, and be sure to turn on "Enhanced protection" in the "Safe browsing" section. Google has replaced the standalone Chrome Cleanup Tool with this AI-powered feature, which shares real-time data with Safe Browsing to shield your PC against malicious downloads. This AI-powered option replaced the previous Chrome Cleanup Tool and will shield your PC against malicious websites and downloads by sharing real-time data with Safe Browsing. Follow the instructions if any harmful software is found. Safari Safari does not offer a single "Reset" button. You must clear history, cache, and extensions manually to achieve a clean slate. Safari used to provide a reset button, but now requires you to go through several steps to clear browsing history, website data, cache, and extensions to achieve a similar result. Click the Safari > Preferences menu and select the "Advanced" tab, then tick the box next to "Show features for web developers" to turn on the Develop menu. Now click Safari's "Develop" menu and choose "Empty Caches." To clear browsing history, click the History > Clear History menu, select "All History" in the popup, and then click the "Clear History" button. This step isn't essential for this problem, but it's still a good idea to do it. To clear all saved website data and offline storage, go back to the Safari preferences, select the "Privacy" tab, hit the "Manage Website Data" button, and then click "Remove All." To temporarily turn off the extensions you've installed, click the "Extensions" tab and untick any extensions you are suspicious of to disable them. Don't forget to restart Safari to confirm that all of your changes have been applied. Firefox Reset Firefox by clicking the menu button in the top-right corner and choosing "Help," then select the "More troubleshooting information" option. Click "Refresh Firefox" on the Troubleshooting Information screen, then click the "Refresh Firefox" button in the confirmation dialog. Doing so will remove all extensions and customizations from Firefox, but essential information such as bookmarks and saved passwords will not be reset. Microsoft Edge Resetting Edge is very easy. Click the menu button in the top-right corner and select "Settings." Select "Reset Settings" in the sidebar menu, then click "Restore Settings to Their Default Values" on the right side and confirm the action by clicking the "Reset" button. If you are still being redirected, check for forced policies. Open edge://policy in the address bar. If you see suspicious policies, open the Windows Registry Editor and delete the corresponding keys under HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Edge. As with most other browser resets, extensions and settings will be reset to default, but bookmarks and passwords will remain. Checking for System-Level Hijacks Browsers are not the only targets. Malware often locks settings at the OS level to ensure the hijacker survives a browser reset. On Windows: Malicious software can alter your DNS settings to route your traffic through ad-serving servers. Open the Start menu, type cmd, right-click "Command Prompt," and select "Run as administrator." Type ipconfig /flushdns and press Enter. If you suspect deeper infection, boot into Safe Mode by typing msconfig, going to the "Boot" tab, and checking "Safe boot." On macOS: As mentioned, check System Settings > Privacy & Security > Profiles for unauthorized configuration files. Additionally, check your Users & Groups settings for newly created accounts that might be running background hijacking scripts. Clearing Residual Search Engines & Mobile Fixes Hijackers often leave behind residual search engine entries even after a reset. Go to your browser's Manage search engines list and manually delete any unauthorized engines (like Yahoo or Baidu) that you no longer want to see in the suggestions. If your phone is also redirecting, the fix is usually simpler. On Android, go to Settings > Apps > [Your Browser] > Storage > Clear Cache and Clear Data. On iOS, simply uninstall the browser app and reinstall it from the App Store to wipe all cached hijacker data. Finally, when you sign back into your browser's sync account, manually remove any suspicious extensions that reappear. Signing in will restore your previous add-ons, which may include the hijacker itself. Browser searches should never redirect to Yahoo or another search engine that's not your default. But if you've followed the instructions above, your browser should no longer have any malicious add-ons and will no longer keep changing your search engine to Yahoo.