Solving The 'An Extension Failed To Initialize. Can't Open File: Extend.Dat' Error

Outlook Problems

         Fix Outlook Problems

If you are a frequent user of Microsoft Outlook, you must be familiar with some of the common Outlook problems. But, we are not going to discuss the common Outlook problems here. A couple of weeks ago, a friend of mine came to me asking for a solution to an Outlook issue that he encountered. I checked his Outlook application and found out that the issue was strange. When I tried to open a new email in the inbox, an error message popped up stating “An extension failed to initialize. Can’t open file: Extend.dat”.

On my lookout for a solution to fix this annoying error, I found out that the same error could arise when a user tries to launch the Out of office assistant or even when he attempts to exit the Outlook application. Once started, this annoying error message could be surfacing until you troubleshoot it. I am pleased to describe here the troubleshooting steps that I worked out to fix this error.


  • Exit your Outlook application if it is currently running.
  • Navigate to the Start button and right-click on My Computer from the resulting menu.
  • Select the option titled Explorer from the dropdown menu.
  • Locate the Tools option on the menu bar that is located at the top of the screen and select it.
  • Choose Folder Options from the resulting menu.
  • Locate and click on the View tab in the Folder Options dialogue box.
  • After that, select the checkbox before Show hidden files and folders. Proceed by selecting the OK button.
  • Now, locate the folder labelled Documents and Settings and click it to open. Navigate to the folder named after your username.

    Out Of Office Assistant

               Outlook Help Desk

  • Open the folder titled Local Settings followed by Application Data.
  • In the Application Data folder, double-click the folder titled Microsoft to open it. Proceed by opening the Outlook folder.
  • In the Outlook folder, locate the file named Extend.dat and right-click it.
  • Select Rename from the dropdown menu. The file should be renamed to Extend.old.
  • Now, restart your Outlook application. It should work fine now.

Following the above instructions, you would be able to successfully replace the corrupted Extend.dat file in your Outlook application with the proper one.  Corrupted Extend.dat is responsible for a number of Outlook problems including the error labelled ‘An extension failed to initialize. Can’t open file: Extend.dat.’

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Mozilla Going Local To Develop Firefox OS Apps

Mozilla Firefox Support

Support For Firefox

Firefox OS is an open source operating system released by Mozilla Cooperation to be used on tablets and smartphones. In order to boost the number of applications for the devices running on Firefox OS in various markets, the Company Mozilla is working very hard with the local developers according to Mozilla Firefox support team. This was confirmed by Li Gong, the COO of Mozilla Corporation. Li Gong said to Mobile World Live about the companies’ worldwide community saying, “We have lots of people that love the Firefox brand and they contribute — we have grassroots movement everywhere.”

He further explained, “So for every country we launch, we actually use the community there to help us localise the product and also energise the local app developers to develop apps that they would like to use on our platform.” In addition to interacting with the community, the company Mozilla is targeting the developers of the best 100 applications worldwide. It is also targeting top fifty developers from each country where the platform for the smartphones were launched.

The Firefox devices have been introduced in 15 different markets for sale through four operators and the handsets were manufactured from three manufacturers. To add more boost, a company named Telefonica is about to introduce the Firefox devices in further eight more markets in the year 2014 and this include the countries like Germany and some countries in Latin America. Meanwhile, another company named Deutsche Telekom is set to introduce the devices in this platform in Eastern Europe and Southern Europe.

Mozilla Corporation

Mozilla Support

At the Mobile World Congress, the Indonesian Companies like Indosat and Telkomsel declared their support to the Firefox OS. The number of operators supporting the technology rose to 22 when the largest operator of Taiwan named Chungwa Telecom announced their support to Firefox OS at the Mobile Asia Expo that was conducted last month. New devices were announced in the month of February, which include ZTE Open C and Open II. This also includes the one touch trio of devices coming from Alcatel, which includes higher-spec Fire E, Fire S and entry level Fire C.

Apart from this, to build smartphones using the platform, the Company Mozilla Corporation also announced partnerships with Spice and Intex at the Mobile Asia Expo. This will be a huge step by Mozilla to capture the Smartphone and tablet markets. For more help, contact the Mozilla Firefox support number.

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Configuring MacAfee Internet Security For Mozilla Firefox

Mozilla Firefox Support

Mozilla Firefox Issues

Installing an antivirus program is essential to get rid of the malicious content in your computer. While selecting such a program, it is important that you choose the best one with the most advanced options. McAfee Internet Security is one such enhanced program that can help to detect all the malwares in your computer. Running a scan in your computer is necessary in order to find such viruses and delete them from your system.

However, sometimes, the antivirus program may prevent your Firefox browser from connecting to the internet once the browser has been updated. According to the Mozilla Firefox support, you need to configure the McAfee program in order to enable your browser to connect to the internet.

You can use the following instructions to configure your McAfee antivirus program in order to connect to the Internet using your Firefox browser:

  • At first, you need to click on the Start button and navigate to Programs option. Now, double click on the McAfee icon followed by the McAfee Security Center icon.
  • Now, you need to click on the Advanced Menu button on the bottom left hand side pane and press the Configure button in the Advanced Menu. In the left hand-side pane, you need to click on the Internet & Network option to check the firewall option.
  • Malwares

    Mozilla Firefox Updates

    In the next step, you need to click on the Advanced button and then on the Program Permissions on the left hand side pane. Now, locate Firefox from the list of displayed programs. You need to click on the Remove Program Permission option and on the Yes button to confirm it. At any point of time, you can also contact the Mozilla Firefox support team to know more about configuring the Firefox browser and about setting the firewall option.

  • Next, click on the Add Allowed Program button. You need to check for the location of the Firefox installation folder in C:\Program Files> and Mozilla Firefox.
  • You can double click on the Firefox icon and then on the OK button to close the setup/configuration window. Once you’re done, you need to click on the Apply button and then OK to exit the McAfee Security Center window.

These steps can help you in configuring your McAfee antivirus program to enable Firefox to get connected to the Internet. For more assistance on the same, you may get in touch with our technical support personnel.

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Configuring McAfee To Allow Firefox

Mozilla Firefox Support

Firefox Issues

If you use McAfee Internet Security in your computer then you know how annoying it can get when it consistently blocks even harmless applications from the internet. There are cases where the browser gets barred this way, most especially Mozilla Firefox. To configure McAfee Internet Security and enable Mozilla Firefox to connect to the internet, you can either choose to call our Mozilla Firefox support team or make the following changes.

  • Click on the Start menu button, normally situated in the bottom left corner of your screen. When the Start menu pops up, click on Programs/All Programs.
  • Locate McAfee from the list of installed application and click on it. An alternative method to accessing the McAfee window would be to double-click on the McAfee icon which you’ll find in the system tray.
  • When McAfee Security Center window pops up, click on the Advanced Menu button which is situated in the bottom left side pane. Click on the Configure button and then select Internet & Network from the left side pane in this new window. You will be able to see if your Windows Firewall is enabled or not.
  • Click on the Advanced button situated in this window and then click on Program Permissions (again situated on the left side pane). See if you can find the Firefox application from this list of displayed programs and click on it to select it. Click on the Remove Program Permission option and then click Yes to confirm.
  • Next, click on the Add Allowed Program button and then browse to the location of your Firefox installation folder. Double click the Firefox executable file (Firefox.exe in most cases) and then click OK. After this, click on Apply button and OK successively to exit the McAfee Security Center window.

If you hate going through the procedure mentioned above, you can choose to reset the Firefox configuration by making the following changes:

McAfee Anti Virus

Firefox Error

  • Launch Mozilla Firefox from the Start menu and wait for the application to load.
  • Once Firefox comes up, click on the Tools menu, and then select Options.
  • Click on the Advanced tab, and then click to select Network.
  • Inside the Network menu, click on the Settings button to open the Connection settings dialog box. The new window that pops up will let you change your proxy settings.
  • When you are done, click OK to exit the Connections Settings window and then OK again to exit the Options Window.

If you followed all the instructions to the word, you will be able to use Mozilla Firefox. If you have any queries, do not hesitate to contact our Mozilla Firefox support.

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Which Is The Best Browser For Corporate Environment: Firefox Or Explorer?

Mozilla Firefox Support

              Features Of Mozilla Browser

Web browsers play an important role in a corporate environment. It is important that you choose the web browser wisely to keep the communication safe and effective. If you are a home user, it is easy for you to choose or change a web browser as and when you like. However, when it comes to the corporate world, you are talking about hundreds or thousands of machines in a single network and therefore, choosing the best operating system on all these machines is important for effective and reliable communication and browsing.

Two major internet browsers compete to become first in the corporate world. They are the Internet Explorer and Mozilla Firefox. Now, even though the number of Internet Explorer users has come down considerably over the years, many experts still support Internet Explorer as the best browser for the corporate world. In this post, let us find out why Internet Explorer is still considered a favorite over Mozilla Firefox.

Integrated in the operating system

This is one of the major features and a major advantage of Internet Explorer. As the browser installs automatically with the operating system, there is no need to devote additional time for installing a separate browser. You need to consider installing a new browser only if the default browser does not work well on your computer. Keep in mind that in big business houses, there may be thousands of computers and installing a new browser on these machines can be a tedious task.

User settings in the browser

Group Policies

         Mozilla Firefox Installation

Both Internet Explorer and Mozilla have this feature. According to Mozilla Firefox support, with this feature, all the bookmarks and user-settings are stored in the program. This helps users to work with their settings even if they are logged on from a different computer in the network. That is, you can start using your bookmarks and other settings from another machine.

Managing group policies

Here, Internet Explorer is a clear winner. You can manage the policies centrally and this feature would be very helpful in the corporate environment. For instance, you can centrally change the browser settings on all browsers in the network. This will help you to keep all the browsers in the network with the same settings.

Therefore, while comparing Internet Explorer and Mozilla Firefox, the former is a clear winner for the corporate environment. For more features on these web browsers, you may contact Mozilla Firefox support or Microsoft support.

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