Windows Vista Firefox Errors

Microsoft Vista comes with the latest Internet Explorer 7 as standard, however, many users prefer the functions and security features that Mozilla's Firefox browser offers. A Vista compatible Firefox is available that offers the same functions and security levels as users have become accustomed to. The following are certain errors that have been known to occur for Firefox users on the Vista platform.

Only one Microsoft knowledgebase article is available on the topic, however, there are a number of known fixes also described in this section of the guide.

Error Code 203

This error is typically witnessed when attempting to install the Firefox plugin that enables you to view Windows Media Player embedded media. It is accompanied by an unsuccessful installation attempt and means that users will be unable to view any embedded WMP files that are on websites and web pages.

The plugin that is required is missing from the Vista platform, and it may also be missing from other Windows operating systems. Without this plugin it is not possible to view Windows Media Players embedded into web pages. In order to resolve the issue users need to download the Windows Media Player plugin made available by Microsoft at the following link:

Error Code 203

Once the plugin is downloaded you should once again attempt to reinstall Firefox on your system.

Firefox Not Updating

Downloading and installing the latest updates for any application is generally the advised route to take. Recent releases of Firefox are known to cure a number of Vista compatibility issues as well as several bugs and other errors. However, a number of users have reported an error when attempting to upgrade to the Firefox 2.0.0.1 release.

To most users this update is a very minor fix, if it has any impact at all. However, if you do wish to stay on top of releases and you are struggling because you keep being presented with the option to upgrade despite having upgraded then you need to follow these instructions:

> Run Firefox as an administrator by right clicking the Firefox icon and selecting “Run as administrator”

> Click “Help”

> Select “Check for updates” from the drop down menu

> Click “Download and install now”

> Once download is complete DO NOT select the option to Restart Now

> Instead, choose to Exit the application

> Restart Firefox, again ensuring that you have Administrator privileges

> The upgrade should continue as normal

There are more recent upgrades of Firefox available now and you may opt to install one of these upgrades instead, eliminating the need to perform the above actions.

Firefox Window Shakes

When using Windows Firefox you may notice that the main Firefox window shakes or bumps. There are a number of known reasons why this occurs. Primarily you should ensure that you do not use any additional third party plugins that may be causing this to happen as part of its features. One example is the eQuake plugin. This plugin will cause the Firefox window to shake when a new earthquake is reported.

If this is not the case then you should download the latest upgrades. This bug was fixed in Firefox release 2.0.0.4 so using this release or a later one should ensure that your Firefox window does not shake unexpectedly.

Can't Select Firefox As Default Browser

Selecting Firefox as your default browser ensures that whenever you click links or attempt to open an Internet page the Vista operating system will use the Firefox browser rather than Internet Explorer or any other browser you have installed on your machine. Some users have reported that they have been unable to select Firefox as the default browser.

This was an error in some earlier releases of Vista compatible Firefox browsers. In order to remedy this situation you should install the latest version of Firefox available, and certainly 2.0.0.2 or later.

JS_DHashTableOperate could not be located

This error occurs in Firefox version 2.0.0.0 and has been fixed in later releases. It occurs when attempting to start the Firefox browser and results in an inability to access the application. It is usually caused by updating from an earlier version of the Firefox browser but without exiting or closing all Firefox windows and applications.

Removing and reinstalling the application should remedy the situation. This version of Firefox has been replaced several times, and users are advised to download the latest version in place of version 2.0.0.0. The latest releases include a number of important patches, fixes, and other updates.