Table of Contents:

• Introduction
• Disabling Internet Browser Add-ons / Plug-ins
• Temporarily disabling anti-virus, anti-spyware, and firewall products
• Clearing your internet browser’s Cookies and Cache
• Restarting your computer
• Updating Flash Player
• Ensuring that JavaScript is enabled and updated
• Testing with a different internet browser
• Testing from another computer
• Troubleshooting Attachments

Each Internet browser comes with optional upgrades or enhancements commonly known as "add-ons" or "plug-ins." These features make your Internet browser more useful & certain add-ons or plug-ins can potentially cause issues with Yahoo!7 Mail. Common uses of add-ons and plug-ins include (but aren't limited to) toolbars, news or stock tickers, instant messaging, weather alerts, email alerts, anti-virus/anti-spy, or games. To find out if this is the case, please follow the steps for your specific browser below:

Internet Explorer 6.0:

1. Close out of all instances of the Internet Explorer Internet browser.
2. Select Start.
3. Select Settings.
4. Click Control Panel.
5. Double-click Internet Options.
6. Select the Advanced tab.
7. Under Browsing, clear the Enable third-party Internet browser extensions (requires restart) check box.
8. Close and restart your Internet browser.

Internet Explorer 7.0:

1. Close out of all instances of the Internet Explorer internet browser.
2. Select Start, Settings, then click Control Panel.
3. Double-click on Internet Options.
4. Select the Advanced tab.
5. Under Browsing, remove the Enable third-party internet browser extensions check box.
6. Close and restart your Internet browser.

Internet Explorer 8.0:

1. Click Tools and select Internet Options.
2. Click the Advanced tab on the right.
3. Under Browsing, remove the Enable third-party browser extensions check box.
4. Click OK and close out of all instances of Internet Explorer.
5. Close and restart your Internet browser.

Internet Explorer 9.0:

1. Go to Tools | Manage Add-ons.
2. A list of enabled Add-ons will appear in the list on the right.
3. To disable an Add-on, highlight the Add-on, and at the bottom of the window, click Disable.
4. Click OK and close out of all instances of Internet Explorer.
5. Restart Internet Explorer 9.

Firefox 2.0, 3.0:

1. From the Tools menu, select Add-ons or Extensions depending on your version.
2. Disable or uninstall any extensions found here.
3. Click OK.
4. Close and restart your Internet browser.

Firefox 4.0:

1. Go to Tools | Add-ons.
2. To view the add-ons that are currently active, select the Extensions and Plug-ins tabs on the left side of the page.
3. Click the Disable at the right of an extension or plug-in to disable it.
4. Close the Add-ons window.
5. Close and restart your Internet browser.

Note: Once a Firefox extension has been uninstalled, you can reinstall it by visiting the Firefox extension library here: https://addons.mozilla.org/?application=firefox

Safari 2.x:

1. Click the Safari menu on a Macintosh, click on the Edit menu on a Windows based computer.
2. Select Preferences.
3. Click the Security tab.
4. Uncheck Enable Plug-Ins.
5. Click OK.
6. Close and restart your Internet browser.

Safari 3.x and higher:

1. Click the Safari menu on a Macintosh, click on the Edit menu on a Windows based computer.
2. Select Preferences.
3. Click the Security tab.
4. Uncheck Enable Plug-Ins.
5. Click OK.
6. Close and restart your Internet browser.

Google Chrome:

Launch Google Chrome from Start/Run with the parameter -disable-plugins

For example, in Vista:
C:\Users\%username%\AppData\Local\Google\Chrome\Application\chrome.exe -disable-plugins

Once you've successfully disabled your Internet browser's add-ons or plug-ins, try accessing your Yahoo!7 Mail account again and compose, reply, or forward a message. If the steps above fix the problem, this will confirm that an add-on or plug-in in your Internet browser is the culprit causing behind the problem.

Previous Step: Introduction

Next Step: Temporarily disabling anti-virus, anti-spy ware, and firewall products