Hello,

Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache. Note: This will temporarily log you out of all sites you're logged in to. To clear cache and cookies do the following:

1. Go to Firefox > History > Clear recent history or (if no Firefox button is shown) go to Tools > Clear recent history.
2. Under "Time range to clear", select "Everything".
3. Now, click the arrow next to Details to toggle the Details list active.
4. From the details list, check Cache and Cookies and uncheck everything else.
5. Now click the Clear now button.

Further information can be found in the Clear your cache, history and other personal information in Firefox article.

Did this fix your problems? Please report back to us!

Thank you.

No, nothing has changed. I don't understand why there is a link called Folders instead of simply listing each of the folders. It's so inconvenient. As for the attachments not showing, on several occasions had an agent re-send me attachments until I realised the problem is actually FireFox.

If there's no solution I guess I will swap to Safari. I cannot use FireFox for Yahoo Mail like it is. Originally upon searching the forum I noticed some other persons have had some similar problems with no suggestions working for them.

Do you consider there might actually be bugs?

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Tools > Add-ons > Appearance).

To Enable SafeMode

• You can open Firefox 4.0+ in Safe Mode by holding the Shift key when you open the Firefox desktop or Start menu shortcut.
• Or open the Help menu and click on the Restart with Add-ons Disabled... menu item while Firefox is running.
• Once you get the pop-up, just select "'Start in Safe Mode"

If it works in Safe Mode and in normal mode with all extensions (Tools > Add-ons > Extensions) disabled then try to find which extension is causing it by enabling one extension at a time until the problem reappears.

Close and restart Firefox after each change via "Firefox > Exit" (Windows: Firefox/File > Exit; Mac: "Firefox > Quit Firefox"; Linux: "Firefox/File > Quit")

• https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

Thanks for the replies. No still no difference unfortunately. I used the Help option to disable add-ons & restart in safe mode.

BTW these are the Plug-ins I have enabled:

VLC Plugin version 0.8.6i DivX Web Player 2.0 Google Earth Plug-in 7.1 Java Applet Plug-in 13.9.7 QuickTime Plug-in 7.6.6 Shockwave Flash 11.9.900.117 Shockwave for Director 11.6.5r635

There's several others but they are all disabled.

Ridiculous having to log-out then back-in to access my Yahoo Inbox. Otherwise if I click any folder nothing happens, including the INbox. I've decided to swap to Safari since FireFox has lost the plot. This has been an ongoing issue for many months & time it was fixed. Swap browsers if that is the only answer. After all, it only seems to happen on OSX FireFox.

Programming gone lost somewhere. Perhaps they will find it again eventually. But most people do not have the patience to have important emails not be findable or important attachments non accessible.

Good luck with your next trix. Please refine your programming skills. After all, this issue only seems to happen on the OSX FireFox not Windows for me. But I am on an OSX system. Spill a few more users until you finally discover the reason for the problems. Time will lose you more & more. Or Perhaps OSX 10.6 is a forgotten system. I'm not about to pay out multiple thousands of dollars to upgrade apps just to make them 10.9 compatible. Marketing is mostly a lie. :p

(Edit: Yes I studied Marketing, International Marketing, business, etc.) I'm tired & so is my browser. :D

I tried OSX 10.8 via Parallels, seems FireFox refuses to work for Yahoo Mail. I cannot even log in. Safari I Logged in fine. No problems with the issues mentioned above. Attachments show up fine. Inbox works fine. Seems FireFox for OSX has some problems. Why is the problem 'only' OSX FireFox? And on both OSX 10.6 & 10.8?

(Edit: typo)

I've discovered the problem is mostly Yahoo! 7's new design. Going to Options and switching to Basic view helped for some issues such as folders and attachments. At this point problems seem to have gone. I'd recommend this for anybody else having a similar issue. And do NOT click on the 'Switch to the newest Yahoo!7 Mail' link! :D

If clearing cookies doesn't work then it is possible that the cookies.sqlite file that stores the cookies is corrupted.

Rename (or delete) cookies.sqlite (cookies.sqlite.old) and delete other present cookie files like cookies.sqlite-journal in the Firefox profile folder in case the file cookies.sqlite got corrupted.

• http://kb.mozillazine.org/Cookies
• https://support.mozilla.org/kb/Deleting+cookies

Any luck with a Private Browsing mode window?

If you have made changes to Advanced font settings like increasing the minimum/default font size then try the default minimum setting "none" and the default font size 16 in case the current setting is causing problems.

• Firefox > Preferences > Content : Fonts & Colors > Advanced > Minimum Font Size (none)

Make sure that you allow pages to choose their own fonts.

• Firefox > Preferences > Content : Fonts & Colors > Advanced: [X] "Allow pages to choose their own fonts, instead of my selections above"

Mine dont work but with Firefox 19. the picture is what my email page looks like EXACTLY. i hope having resolution of 800x600 doesn't affect it. but it hasn't worked since forever after the new update

Hi ReverendMother

That screenshot shows that Firefox isn't using the downloadable font that is used to display those icons.

So you need to make sure to allow pages to choose their own fonts.

• Tools > Options > Content : Fonts & Colors > Advanced: [X] "Allow pages to choose their own fonts, instead of my selections above"

You can check the gfx.downloadable_fonts.enabled pref on the about:config page to make sure that you aren't blocking downloadable fonts.

• http://kb.mozillazine.org/about:config

Start Firefox in Safe Mode to check if one of the extensions (Firefox/Firefox/Tools > Add-ons > Extensions) or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox/Firefox/Tools > Add-ons > Appearance).

• Do NOT click the Reset button on the Safe Mode start window.

• https://support.mozilla.org/kb/Safe+Mode
• https://support.mozilla.org/kb/Troubleshooting+extensions+and+themes

I am experiencing this problem right now on Windows 7 with Firefox 25.0.1. I can see that the email has an attachment in the list of emails, but when I open the email there is no attachment visible.

This does not happen in Chrome.

Hi TonyTTT, due to all the server changes, some users are finding bizarre attachment 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?

Yahoo Email worked fine with the latest version of FireFox, version 28.0. Then two days ago, Yahoo email changed again and I am having lots of problems using Yahoo Email. There are no problems using Yahoo Email with Chrome. I tried every suggestion listed in Mozilla relating to this problem and none of them work. The only way I can use Yahoo Email in FireFox is to use basic mode. I need somebody from Mozilla to contact me about this problem.

Hi JEVColorado, as far as I know, there isn't any staff at Mozilla available to help users with individual website problems.

Can you be more specific about the "lots of problems" you're having with Yahoo! mail?

I cannot open more than 2 emails before I have to reload Yahoo email (that works about 8% of the time). I cannot move any emails and it is very hard to send an email. I can only use basic mode to do any type of email activity.

Hi JEVColorado, what happens when you try to move an email or send an email. The site starts the task but never finishes? Or does Firefox display a slow script error?

So you've already tried these things and the site still behaves poorly:

• Clear cache and Yahoo cookies
• Avoid using old links to Yahoo mail and access through the home page
• Test in Firefox's Safe Mode to rule out issues created by extensions

Do you use any proxy software or service, such as a private VPN or TOR, to access the internet? You can check your Firefox connection setting in the Options/Preferences dialog. Assuming Windows:

orange Firefox button (or Tools menu) > Options > Advanced > Network mini-tab > "Settings" button

The default is "Use system proxy settings" but you could try "No proxy" to see whether that makes a difference.

Nothing happens. No messages, I done everything that has been suggested for this problem. I read and tried all of the suggestions in the related question posted in Mozilla Help for this problem. I tried using no proxy and that did nothing to remedy the problem..

Hi JEVColorado, I'm not sure what related question you're referring to. Was it this thread? If you could confirm you tried everything listed in this thread, that would be helpful.

There is another thread with this self same question. I seen all of your replies and I trued everything there.

https://support.mozilla.org/en-US/questions/982292

https://support.mozilla.org/en-US/questions/981786

https://support.mozilla.org/en-US/questions/974089

Here are 3 of the links I looked at and I tried everything in them.