My firefox keep changing eno matter how many times i revert these changes
Right now the startup screen and the default search engine is Yahoo. I change it back to google (which is what i had) but when i restart Firefox, i see yahoo again. Also the default search engine is yahoo again.
Sometimes a problem with Firefox may be a result of malware installed on your computer, especially changes that are occurring without your permission, like your search engine.
You can try these free programs to scan for malware, which work with your existing antivirus software [Note, not all spyware scanners will find everything so you may have to try a couple to get it nailed down]:
- Microsoft Safety Scanner
- MalwareBytes' Anti-Malware
- Anti-Rootkit Utility - TDSSKiller (for more info, see this alternate TDSSKiller download page)
- AdwCleaner (for more info, see this alternate AdwCleaner download page)
- Hitman Pro
- ESET Online Scanner
Further information can be found in the Troubleshoot Firefox issues caused by malware article.
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Note: Some software, like Advanced SystemCare with Surfing Protection, can protect files in the Firefox profile folder against changes. If you have such software then check the settings or uninstall this software.