Got unexpected installation error -203 in Mozilla Firefox with add-on installation?

The 203 error is a known error issue that many Firefox users get when they try to install extensions on their browser. It generally occurs when the user is attempting to install a plug- in, which is abruptly interrupted by the error. Such a condition does not allow any plug-in to be installed on Firefox. Here is a tip to resolve this issue easily. Check for any plug-ins that might be uninstalled, but are enabled in the add-ons list. Here’s how you do that.

· Open the Firefox browser.

· Click “TOOLS” on the Firefox menubar.

· Click “ADD-ONs” .

· Click “Extensions”

· Disable the plug-ins that are uninstalled, Click “Disable” to do this.

· Done!

This should solve the problem. You can now install any plug-in without having to encounter the 203 Error.

As Search Engine Optimization Professionals here are the few plugins we use:

· Smart Page Rank: this Firefox add-on will help you check backlinks of a current active page.

· Search Status: allows you to see how any and every website in the world is performing.

· SEO Quake: can be used to enhance Link: search in Yahoo or Yahoo Site Explorer.

· Inbound Link Quality(ILQ) : This extension will show you the estimated quality of backlinks for an active page.

· SEO Link Analysis: Checks Google Page Rank of a linking page, anchor text used and the no follow attribute.

· SEO for Firefox: pulls useful marketing data points that helps you know the competitive landscape of a market directly in Search Results.

· Rank Checker: Allows you to easily check your website rankings in Google (US & International), Yahoo and Microsoft Live search.

· Web Developer Extension: Adds a menu and a toolbar to the browser with various web developer tools. It is designed for Firefox, Flock & Seamonkey, and will run on any platform that these browsers support including Windows, Mac OSX and Linux.

· yExplore 1.6.4: adds quick access to Yahoo Site Explorer.

· Niche Watch Tool 1.0: Gives you backlinks number, indexed pages, keyword occurrences, page rank, all in anchor and other technical information required to beat your competitor websites in serps.

· YSlow: analyses web pages and tells you why they are slow based on the rules for high performance websites.

· Firebug: Firebug integrates with Firefox to put a wealth of development tools while you browse. You can edit, debug and monitor CSS, HTML and JavaScript live in any page.

· SEOpen: Provides over helpful SEO tools at the right click of a mouse. The tools include Google Backlinks, Yahoo Backlinks, Google Cache, Page Rank check, DMOZ inclusion, Server Header Viewer and many more.

Tags: add on mozilla firefox, error- 203. 203 error, mozilla firefox error