Forgot to add a screen shot. Here is what I see when I go to any of my email accounts.

Have you tried a all new profile?

• Profile Manager - Create, remove or switch Firefox profiles

You've got a mixed content block icon in the address bar, so that probably explains why the site is only partially loading. Obviously a high security operation like Yahoo mail should not be tripping that security wire.

Due to all the server changes, some users are finding bizarre problems when using old bookmarks. To rule out a failed redirect as the problem, could you access your mail using one of these:

• Yahoo home page: https://www.yahoo.com/
• My Yahoo page: https://my.yahoo.com/
• Generic mail address: https://mail.yahoo.com/

Any improvement?

If that doesn't help, and if you haven't already...

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.

(1) Bypass Firefox's Cache

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

Alternately, 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"

If you have a large hard drive, this might take a few minutes.

(2) Remove the site's cookies (save any pending work first). While viewing a page on the site, try either:

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

In the dialog that opens, you can remove the site's cookies individually.

Then try reloading the page. Does that help?