After removing malware Firefox is still broken even after uninstall/reinstall, yet other browsers have no problems with links opening multiple unwanted windows.
I removed malware from my new Windows 7 pro 64 bit PC. I have reinstalled Firefox multiple times to try and resolve the problem, even deleting the Mozilla folder from programs on the C drive. Whenever I click on a link on a webpage in Firefox, multiple unwanted tabs and windows open up making Firefox virtually unusable. Resetting Firefox doesn't help. I installed Chrome and do not get these popups. The malware must have caused some damage related to Firefox that will not allow Firefox to function normally even with a fresh install. I would prefer to use Firefox.
I don't recall the name of the malware.
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The cause is most likely the preferences file in your profile folder. That file contains your personal settings, so it doesn't get deleted when you reinstall/update Firefox. The reset feature also retains your preferences file.
Instead of doing a mass delete of all your settings, you can try identify the culprits and reset them individually.
- In the Location bar, type about:config and press Enter. The about:config "This might void your warranty!" warning page may appear.
- Click I'll be careful, I promise!, to continue to the about:config page.
- Click on the Status column, to sort your preferences by status, and group all the user set preferences together. They should appear in bold.
- If you see any preference that look suspicious, just right-click on it, and select Reset.
If you're still not sure which ones to reset, you can post most of them here easily. Go to Help > Troubleshooting Information then click Copy text to Clipboard. Open a reply to this post, and go to Edit > Paste to paste the info from your Troubleshooting Information page.
You can create a new profile as a test to check if your current profile is causing the problem.
See "Creating a profile":
- https://support.mozilla.org/kb/profile-manager-create-and-remove-firefox-profiles
- http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Profile_issues
If the new profile works then you can transfer files from a previously used profile to the new profile, but be cautious not to copy corrupted files to avoid carrying over the problem
I started a new profile, but I am having the same problem with the new profile.
Run the mal-ware scans again. After that, use any computer diagnostic programs you can get.
Microsoft Fix it Solution Center {web link}