There could be a few different things go on here.

(1) When you start typing an address, Firefox will auto-fill the rest of the address from your history. To avoid that, you can turn off the auto-fill feature and just go with what you typed or choose from the drop-down.

The steps to turn that off are here: https://support.mozilla.org/en-US/kb/awesome-bar-find-your-bookmarks-history-and-tabs#w_prevent-firefox-from-automatically-completing-urls

(2) Firefox often will cache page results even when retrieval fails in some way. When you have a problem with one particular site, a good "first thing to try" is clearing your Firefox cache and deleting your saved cookies for the site.

(A) Bypass Firefox's Cache

Use Ctrl+Shift+r to reload the page fresh from the server.

(You also can clear Firefox's cache completely using:

orange Firefox button or Tools menu > Options > Advanced

On the Network mini-tab > Cached Web Content : "Clear Now")

(B) Remove the site's cookies (save any pending work first) using either of these. While viewing a page on the site:

• right-click and choose View Page Info > Security > "View Cookies"
• Alt+t (open the classic Tools menu) > Page Info > Security > "View Cookies"

Then try reloading the page. Does that help?

(3) Some add-ons or malware may redirect your requests for all the wrong reasons. Hopefully it isn't that.

Regarding the Facebook account issue, Facebook sets a cookie so you do not have to log in on every visit. In order to use a second account, you probably need to sign out of the first account. If Firefox automatically signs you back in to that first account, delete the automatic logon here:

orange Firefox button or classic Tools menu > Options > Security tab

Look for the "Saved Passwords" button

Thanks It seems like auto fill and Cache is all of a sudden a big problem with newer versions of Firefox for me. Tim