Check to make sure you didnt set the "Welcome" tab as a homepage.

• How to set the Homepage

Select Default as the Homepage, restart Firefox as see if the "Welcome" tab loads still.

Also note, Firefox changes a setting in its preferences file to determine whether you've seen the "Firefox Updated" tab. If you are having problems with that file then Firefox will be unable to save this information and will show you the "Firefox Updated" tab each time you start it.

• To correct this, use the steps outlined in the Preferences are not saved article.

I reset the home page to the default to see what would happen, but when I re-opened Firefox the Firefox Welcome tab and my usual home tab loaded (not the default). It appears that I can't update Firefox. I looked at the Preferences but don't know which is the one that needs to be addressed.

Read here: Corrupt preferences file

• This will remove all your custom settings and settings for many extensions.

I could not find the "prefs.js" file. I have a Java script labeld "prefs" and a "prefs.js.lpbak".

The file labeled "prefs" is more than likely prefs.js The file extensions might be hidden within Windows Explorer

The prefs.js (or just prefs) may be the only file that you have. The other ones listed on the page linked above (prefs.js.moztmp, prefs-n.js, Invalidprefs.js) may not exist at all. so do not worry about them, if you do not see them.

Marsh,

I deleted the "prefs" and nothing changed; I still get the Firefox Welcome opening in addition to my home page tab. Now what?