How to Get Proxy Connectivity

If you are on a network that uses a proxy server, and you notice slowness or a problem connecting to websites after upgrading to Internet Explorer 7, it might be due to web proxy auto-detection problems. To fix these problems, follow these steps:

1. Open Internet Explorer, click the Tools button, and then click Internet Options.
2. Click the Connections tab.
3. Under Local Area Networks (LAN) settings, click the LAN Settings button.
4. Clear the Automatically detect settings check box.
5. Click the Use a proxy server for your LAN check box.
6. Type the address and port of your proxy server.
7. Click OK twice.

You will now be able to navigate to Internet sites.

How to troubleshoot installation problems during Internet Explorer 8 Beta 2

In this addition if you cannot install Internet Explorer 8 Beta 2 and facing problem, to troubleshoot its follow these steps:

1. Restart your computer so that any pending updates that require a restart can be installed.
2. Make sure that the Windows Update service is running. To do this, follow these steps:
1. Click Start, click Run, type services.msc, and then press ENTER.
2. In the Services list, locate the Windows Update service. If the Windows Update service is not running, start it.

Internet Explorer 8 Beta 2 may need the following updates, depending on the operating system that you are running. The Internet Explorer 8 Beta 2 Setup program automatically installs the necessary updates for the system.

* Hotfix 932823:
932823 You may be unable to use Windows Internet Explorer to download files on a computer that is running Windows Server 2003 or Windows XP
Install this hotfix to resolve an issue in which a user cannot use Internet Explorer 7 to download files. This issue occurs on computers that are running Windows XP with Input Method Editor enabled.
* Update 946501:
946501 An access violation occurs when an application exits on a Windows XP SP2-based multi-core computer
Install this update to resolve an issue in which a window that has a language bar crashes when it exits. This issue occurs on multi-core computers that are running Windows XP Service Pack 2.
* Update 943302:
943302 December 2007 Windows Vista Application Compatibility Update
Install this update to resolve a set of known application compatibility issues with Windows Vista.
* Update 956586:
956586 Software updates that are required to be installed before you install Internet Explorer 8 Beta 2 on a Windows Vista-based computer
* Update 937287:
937287 A software update is available for the Windows Vista installation software feature
The Internet Explorer 8 Beta 2 Setup program does not automatically install this update. However, it is a required update for x64-based versions of Windows Vista. Install this update to enable future updates to be installed successfully on all editions of Windows Vista.

When you install Internet Explorer 8 Beta 2, you may receive the following error message:
Setup cannot continue because one or more updates required to install Windows Internet Explorer 8 are not present. Double-click the “Internet Explorer Troubleshooting” shortcut on your desktop to install them separately and then reinstall Windows Internet Explorer 8.
To work around this issue, you must install the Internet Explorer 8 Beta 2 prerequisites manually.

source: http://support.microsoft.com/kb/318378

Firefox is already running but is not responding

In addition discuss about if your Browser (Mozilla Firefox) is already but not running. To troubleshoot these problems you must close all programs to allow a previous installation attempt to complete, Restart browser. I hope that is provides Browser Support to solve this problems

Follow the steps to given below:

In Windows Vista If you are receiving the above error message while attempting to start Firefox, try to restart the program. If the problem persists, do the following:
1. Restart your computer.
2. Select the Start Menu in the Windows Taskbar.
3. In the Search box, enter the following:
%APPDATA%
4. Press Enter.
5. From the Application Data folder, navigate to Local\VirtualStore\Program Files\Mozilla Firefox.
6. Delete the file xpicleanup.dat.
7. Restart Firefox.

In Windows XP
1. Click on the Start button and select Search to open the Search Results window.
2. On the left side of the Search Results window, click on the All files and folders link.
3. Click to expand the More advanced options list.
4. Put a check mark next to Search system folders, Search hidden files and folders, and Search subfolders.
5. In the All or part of the file name field, type xpicleanup.dat.
6. Click Search to begin the search.
7. If any results are returned, delete them.
8. Restart Firefox.

Search Supporter May Not List All Search Providers

In addition I discussed regarding If search Assistant not list all search providers. This actions can occur if a language other than U.S. English (en-us) is listed first in the Languages settings in Internet Explorer Properties. This causes the search assistant to return search engines that are compatible with the browser's default language setting, and the content returned to be in a specific language. For some languages, only a limited number of Web search engines are accessible.

To fix this problems follow the steps given below
1. In Internet Explorer, click Internet Options on the Tools menu.
2. On the General tab, click Languages.
3. If English [United States][en-us] does not appear in the list, click Add. If this entry does appear, skip to step 5.
4. Click English [United States][en-us], and then click OK.
5. In the Language Preference dialog box, click English [United States][en-us], and then click Move Up to place the selected entry at the top of the list.
6. Click OK to close the Language Preference dialog box. Click OK to close the Internet Options dialog box.