It happens more often than i want it to.

Hello,

Certain Firefox problems can be solved by performing a Clean reinstall. This means you remove Firefox program files and then reinstall Firefox. Please follow these steps:

Note: You might want to print these steps or view them in another browser.

1. Download the latest Desktop version of Firefox from http://www.mozilla.org and save the setup file to your computer.
2. After the download finishes, close all Firefox windows (click Exit from the Firefox or File menu).
3. Delete the Firefox installation folder, which is located in one of these locations, by default:
   • Windows:
     • C:\Program Files\Mozilla Firefox
     • C:\Program Files (x86)\Mozilla Firefox
4. Now, go ahead and reinstall Firefox:
   1. Double-click the downloaded installation file and go through the steps of the installation wizard.
   2. Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.

Please report back to see if this helped you!

Thank you.

WARNING: Do not run Firefox's uninstaller or use a third party remover as part of this process, because that could permanently delete your Firefox data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. These cannot be recovered unless they have been backed up to an external device!

I did that. Reinstalled it. Hopefully it wont come up again. Thank you for your help.

another affected user at https://support.mozilla.org/en-US/questions/980179#answer-511986 has reported that it is a sign of malware. you can try the manual steps he described, but you might also want to run a full scan of your system with the various security tools mentioned at How do I get rid of malware?

If you have submitted crash reports then please post the IDs of one or more recent crash reports that have a "bp-" prefix:

• bp-xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx

You can find the IDs of the submitted crash reports on the about:crashes page.

• You can open the about:crashes page via the location bar, like you open a website, or open the crash reports page via "Help > Troubleshooting Information".

See:

• http://kb.mozillazine.org/Mozilla_Crash_Reporter
• https://support.mozilla.org/kb/Mozilla+Crash+Reporter

I have various crash reports.. alot of them actually.. i know in fact that i did not receive a normal crash report from firefox himself. So i guess its from the malware?

- I received a pop-up for the missing lenovo data.js see pictures

(thnx for the help)

These instructions did the trick. See also my comment below the article.

u update ur firefox browser version

It is updated, like anything else. It seems like you have no clue what this thread are about. It is about a malware. Updating FF will not help in this subject. Just out of curiosity; What are your computer skills level..?