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Opening Mozilla, I get a dialog box sying the I am a winner of something. I cannot get rid of it. I am stuck. Page ID is mozillal.com. The dialog box refers to http://quizstoppe.com. Can you help me with this problem? Thank you.

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Dialog Box Contents: The page at http://quizstoppe.com says Congradulations Firefox user! You are the Texas winner for July 21st Please select a prize and enter your e-mail on the next page to claim.

                                                                                            OK button

Only actions are OK or X

Dialog Box Contents: ''The page at http://quizstoppe.com says'' Congradulations Firefox user! You are the Texas winner for July 21st Please select a prize and enter your e-mail on the next page to claim. OK button Only actions are OK or X

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Start Firefox in Diagnose Firefox issues using Troubleshoot Mode to check if one of the extensions is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).


Clear the cache and the cookies from sites that cause problems.

"Clear the Cache":

  • Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"

"Remove Cookies" from sites causing problems:

  • Tools > Options > Privacy > Cookies: "Show Cookies"

You can also try to delete the files sessionstore.js [2] and sessionstore.bak in the Firefox Profile Folder.

If you see files sessionstore-##.js with a number in the left part of the name like sessionstore-1.js then delete those as well. Deleting sessionstore.js will cause App Tabs and Tab Groups and open and closed (undo) tabs to get lost, so you will have to create them again (make a note or bookmark them).

See also:


Do a malware check with some malware scanning programs.
You need to scan with all programs because each program detects different malware.
Make sure that you update each program to get the latest version of their databases before doing a scan.

See also: