Popular Mozilla Firefox Browser Tips, Tweaks and Tricks

While writing a blog, discussing different Internet technologies, we cannot miss important web browsers. Firefox is one of the most popular web browsers now a days. Mozilla foundation developed Firefox browser and developers helped a lot for the success of this project because it is an open source project. Big pool of add-ons makes Firefox very helpful for developers, marketers, researchers etc. CoreNetworkZ.com has a lot of tutorials related to Firefox browser. Here I provide links to some of our popular Firefox browser tutorials.

Important Firefox Add-ons

One of the important reasons for the big popularity of Firefox is its huge collection of add-ons. Here you can see tutorials introducing some nice add-ons you can install on your computer. You can also read the step by step guides to install and operate these add-ons.
  1. FireFTP - Recommended Free FTP File Transfer Program

  2. One Deleted Add-on by Mozilla Firefox

  3. Capture Full Screen-shot Using Firefox Browser

  4. Add-on Helps to Improve Photo Search On Firefox Browser

  5. Get Standalone Blog Editor With Your Firefox browser

  6. See Actual URLs Instead of shortened URLs

  7. Set Google Search Results in New Window or Tab On Firefox Browser

  8. Read Your Favorite Blog Updates in Google Reader like Magazine

  9. 3D Tab management On Firefox Browser

  10. No Properties option in Firefox 3.6 Right Click Menu

Firefox Browser Configuration Guides

We can change advanced features of Firefox browser by login to config window. Here is a list of tutorials which explain how to access and change advanced settings of Mozilla browser installed on your computer.
  1. A Script On This Page May be Busy,It May Have Stopped Responding

  2. Set Firefox Check Web Server Certificate Mandatory

  3. How to Reduce Firefox RAM Usage On your Computer

  4. How to Remove Close button from Firefox Tabs

  5. Disable Automatic Virus Scan by Firefox

  6. How to disable Session Restore On Firefox

Firefox GUI Tweaks

Here is a list of simple browser tweaks without having much technical knowledge. These GUI based changes will help you to customize the browser installed on your computer. You can refer these articles when you see some features are disabled on browser and fix the issues.
  1. Disable Firefox Software Automatic Update Check

  2. Disable Multiple Mozilla Firefox Browser Tabs Closing Warning

  3. Update Firefox Browser to Latest Version to Avoid Known Vulnerabilities

  4. Another Instance of Firefox is Running On Your Computer

  5. How to Change Default email Application On Firefox

  6. Keyboard Trick to Rotate Firefox Tabs

  7. How to Remove Saved Passwords from Firefox 3.5 and above

  8. How to Enable Spell Check On Firefox Window

  9. Restore Recently Closed Tabs On Firefox Browser

  10. Different Methods to Clear cookies from Firefox 3.5 and above

  11. How to enable POP UP blocker On Firefox

  12. How to view saved passwords from Firefox browser

Browser Installation Issues

Just like any other software products, Firefox too can cause issues while installing on your computer. This section points to articles dealing with installation issues and any updates related to new features available on Firefox.
  1. XULRunner Error: Platform version '' is not compatible with minVersion

  2. Firefox Added Do Not Track (DNT ) Feature

  3. Oops! Firefox could not find http

Technology Blog

How to Troubleshoot Linksys Wireless Router Connectivity Problems

Linksys is a leading SOHO product manufacture and their Wireless Routers are very popular. This tutorial explains the necessary steps to troubleshoot a Linksys Wireless router when a PC connected to it facing issues with accessing Internet. There are various reasons which prevent a user from going online but the task of a network admin is to isolate the right reason from the list of all possible reasons. I believe this guide will help you to isolate and pin point the right cause which prevents a Linksys router from getting Internet connection. Here we troubleshoot some common issues and they are listed below.

  • Troubleshoot Configuration Issues

  • Computer cannot Join  Wireless Network

  • Cannot Access Internet Through Linksys Wireless Router

  • Low Speed of Linksys Wireless Router

Analyzing Issues With Linksys Router

If you are facing any of the issues listed above, I recommend you to go through the guide to fix it. The same procedure can be followed to fix issues with Access Point (AP) too.

  1. Check LED lights

    First step is to make sure the device is working fine. So we need to check the following lights and make sure they are steady. Power light, Internet light (WAN ), LAN light (if computer is connected to any LAN port) and Wireless light.

  2. Make sure Modem is online

    Before troubleshooting your Linksys router for not getting Internet, you should make sure that your computer is online directly through modem(ISP). To check this, you need to connect your computer directly to the modem and try to go online. If you are unable to go online, you should immediately contact your Internet Service Provider (ISP).
    No Internet From ISP Modem.

  3. Make sure you can ping Linksys Router

    You should make sure that you are getting valid reply from Linksys Router while ping it.
    How to Check Your Local Network Connection.

  4. Check Current Configuration

    It is very important because if the device is not configured correctly, computers connected to it will not get Internet. The following guides will help you to check it.

  5. Power Cycle

    By power cycling you can fix most of the connectivity issues with Linksys Router. To learn more about how to power cycle Linksys Wireless Router, visit the link below.
    How to Power Cycle a Network Device

  6. Check Connection

    Another Step to troubleshoot connectivity issues is to check whether your router is properly connected to the modem and computer. To know more about it click on the link below.
    Router Cascade Guide

  7. Upgrade Firmware

    Upgrading the firmware  to the latest version may fix some of the issues. Click on the link below to know how to do it.
    How to Upgrade Wireless AP Firmware

Issues with Accessing certain Services via Linksys Router

If you are facing issues with accessing certain services or websites via Linksys products, following guide can help you.
Cannot Access Certain Websites and Services 

Port forwarding

Some times Linksys firewall can block you from accessing certain online games while playing with X box, Play station etc. In this case you may need to forward respective ports.
How to Forward Ports To Play Online Games

Technology Blog

How to Remove Close button from Firefox Tabs

Firefox is one of the popular browsers with many stunning features. We have covered many guides on the topic and here I introduce one different tweak. Let us check how to modify the default feature of this browser by editing the configuration. This tutorial explains step by step instructions to remove close button from Firefox tabs. After completing the procedure there won't be any option to delete the tabs without closing the entire window. You don't need to worry, you can always reverse the changes you made.

Steps to Remove Close button from Firefox Tabs

I would like to give a small introduction first about the way this tweak works. To perform it, we need to logon to config page. Then edit the value of browser.tabs.closeButtons from default to 3. It will remove close button from all Firefox tabs. Steps are given below.

  1. Start the browser

  2. Login to about:config

    To remove close button from Firefox tabs, you need to login to about:config. To do this type about:config on address bar and press enter. Now, you will see a warning message saying how important this page and any mistake can make this program not working.

    You need to click the button to continue.

  3. Change the value of browser.tabs.closeButtons to 3

    Browse for browser.tabs.closeButtons in about:config page and modify the value by right click on it. Change the default value to 3. Now the close buttons in every Firefox tab will be removed. Look at the image below, you will get idea about how to change the value.

There is No Close Button To Terminate Firefox Tab

On the other hand, if you are not seeing any close button without changing any settings, same procedure can fix the issue. All you have to do is to continue the steps from 1 to 3 and change the value from 3 to 1. So any difficulties with closing the open tabs will be fixed.

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  3. How to Clear Saved Passwords

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Technology Blog

How to Encrypt a Picture With Secret Text

There is an old trick to hide a file or text in an Image an send it over Internet to avoid detection. If we search in Google with the keyword "Hide message in an Image", we can see a lot of tools to hide secret phrases in an image. However, this tutorial doesn't explain the usage of any of the tools. Here we learn how to encrypt a picture with secret text without possible detection. We need a high quality picture in JPG format and once we encrypt this picture with hidden content, you will notice no difference to it. This tutorial is written in a way to teach you this trick without the help of third party tools using a practical example.

Steps to hide Text in an Image

Before proceeding to the trick, we must make sure we have following essential things ready.

  • A quality JPG image

  • Text file you need to hide

  • WinRar

Here I assume the text file we need to hide is named as text.txt and the photo is named as image.jpg. I have a file named hidenfile.rar which is the compressed file of text.txt using WinRar. Winrar is a freeware and you can download it for free from the link below.

Now let us check how to perform this task. Go through the step by step instructions provided below.

  1. Create a folder

    I have created a folder named encrypt in C drive and saved the photo and text file there ( C:\encrypt).

  2. Open Command Prompt

    Type cmd on search or run and press enter to open DOS prompt. Now go to C:\encrypt and if you do not know how to go to a particular folder (C:\encrypt) in command prompt, follow the steps below.

    • Type cd\ and press enter, now you will go to C:\

    • Type cd encrypt and press enter

    Now DOS window will be showing the following address C:\encrypt

  3. Now type following code on DOS Prompt

    copy /b image.jpg + hidenfile.rar newimage.jpg

    Here newimage.jpg is the picture which contains the compressed file hidenfile.rar and you can send it your friend. He can open this file using winrar and extract the hidden message from the picture.

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How to Access On Screen Virtual Keyborad On Windows XP & 7

If you are in a public cafe, it is not advised to type your username and passwords using regular keyboards to logon to online accounts. If applications like keyloggers are installed on that computer, they can record every keystrokes and send it to their Creator. So if you type the username and password using the keyboard, keyloggers will record them and eventually others will learn your user login information. In order to avoid such a chance it is recommended to use virtual keyboard to type sensitive information on a laptop. Microsoft built a virtual keyboard called Windows On Screen Keyboard for users who are using infected computer to avoid key strokes. This tutorial explains how to access virtual keyboards on Windows 8, 7, Vista and XP computers.

Access Windows 7 Virtual Keyboard
  1. Go to Control Panel

  2. Click on Ease of Access Center in icon view

  3. Click Start On-Screen Keyboard
    large icon

  4. Now the virtual keyboard is started
    trick rootkits

How to Get On Screen Keyboard in Windows XP

To access Windows XP virtual Keyboard, follow the steps below.
  1. Click on Start

  2. Click on All Programs

  3. Click on Accessories

  4. Click on Accessibility

  5. Select On-Screen Keyboard
    How to use On Screen Keyboard in Windows XP

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Technology Blog

Troubles With Changing Yahoo Messenger Display Image

Last time while chatting with one of my friends in Yahoo Messenger, he said that he was unable to see my display image. Then I checked and saw no display image was selected. As usual I selected the display image and click OK. However, it didn't fix the issue and the display showed blank. I tried again to select my uploaded image in Yahoo Messenger but the issue remained, as the display still showed blank. I checked the reason for this trouble in some forums and found that issue of unable to change yahoo messenger profile picture is a common issue. It may be from the server side or the issue from client side. Another kind of issue is with seeing the display image of chat friend. Instead of showing his display image you may see a black window. This tutorial explains a set of possible steps to troubleshoot issues with changing current yahoo messenger display image.

How to Solve Issues with Changing Yahoo Messenger Display Image

Possible troubleshooting steps you can follow while facing this problem are:
  1. Log off and Login

  2. Delete the currently saved pictures and load the images again

  3. Try to upload JPEG format images (usually png format has compatibility issues)

  4. Make sure you are using the latest version of YM

  5. Delete the Yahoo Messenger current cache and re-login

    You can delete Yahoo Messenger cache in the following path.
    My Computer> Local Drive C >Program Files >Yahoo > Messenger >Cache

  6. Make sure you have latest Adobe Flash Player installed on your computer

  7. Uninstall and reinstall Yahoo Messenger

All the above steps work only if the reason for the issue is from user end. For example, if the software installed on a PC is outdated, it may not work as expected. We can resolve that situation by completely removing the software from the PC and install the latest release.If the issue is from server side, none of the above tips will work. In that case all you can do is to wait.

While selecting a picture to set for profile, it is important to check the format. We cannot expect a tool supports every formats. YM supports JPEG format more than png. If you have a selected a png picture, there might be a chance of compatibility issues. To avoid such a problem, it is better choose a file with right format.

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DVD Drive is Not Showing in My Computer

DVD or CD drive is an important peripheral device and most of the desktop computers and laptops have it. There are certain cases where a computer fails to recognize or show DVD drive connected to it in My Computer. It is like your PC doesn't even know such a device is there. This tutorial explains most of the reasons for a computer to ignore the connected DVD drive. Second part explains the common troubleshooting steps to fix if you cannot see DVD writer in My Computer.

Major Reasons For Not Detecting DVD Writer

  1. DVD Drive may be disabled in your computer

  2. Driver need to be Updated

  3. Loose connection

  4. Possible Registry Error


If you do not see the CD writer in My Computer, I suggest you to perform the steps below.

  1. Check in Device Manager

    First step is to go to Device Manager and check whether the DVD writer is detected there. If it is detected, make sure it is not disabled. If it is disabled in Device manager, you need to right click on it and enable it.

  2. Disconnect DVD drive and Reconnect it

    Loose connection is one of the common reasons for a PC to stop recognizing a device. So it is recommended to unplug your DVD drive from your PC and reconnect it. After reconnecting it, restart your computer. Now check whether it is detected by your computer.

  3. Update Driver

    If the driver installed in your computer is outdated, it is recommended to update the device driver. You can download the latest version of from your DVD Drive manufacturer website.

  4. Registry fix

    I found this registry fix from a discussion form. According to this fix you need to go the following registry location:


    Here you need to select the key: {4D36E965-E325-11CE-BFC1-08002BE10318}

    You need to delete All Value Data from UpperFilters and LowerFilters attribute.
    solution for CD player issues

    After deleting the value, you may need to restart your computer.

  5. Contact Vendor

    If all four steps mentioned above failed to resolve the issue, last resort is to contact product manufacturer. You should call the device manufacturer technical support.

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Configure Nokia Siemens C2110 ADSL Modem to Setup BSNL Internet

BSNL provides Nokia Siemens C2110 ADSL Modem for users who opt not to take wireless modem. It has routing feature but does not have WiFi. Since it has DHCP server, we do not need to buy an extra router to share Internet among multiple computers. However, C2110 has just one LAN port and one USB port. So you must have an additional device known as switch to share Internet between multiple computers. Nokia Siemens C2110 ADSL Modem is best suited for BSNL customers who want Internet on just one computer. This tutorial explains how to configure broadband on Siemens C2110 ADSL Modem and instructs how to connect a switch to share the broadband among multiple devices.

Boost BSNL Broadband Speed

Configure Broadband On Nokia Siemens BSNL C2110 ADSL Modem
  1. Connection

    Connect LAN port of C2110 to computer using an Ethernet cable. Make sure the device is on.

  2. Login

    Type on the address bar of your browser and press enter.

    When a user login window comes it will prompt you to enter a username and password.

    Default Nokia Siemens BSNL Modem login username and password is:

    • User Name : admin
    • Password   : admin

  3. Configure Internet

    To configure Internet in Nokia Siemens BSNL Modem, you should follow the steps below.

    • Click on Configuration

    • Click on Internet

    You should delete all the default connections shown in this page. You can select the connection and click on delete symbol.

  4. Create a new connection

    • Click on add to create a new connection

    • Enter the following details.

      1. PVC Name : PPPoE
      2. VPI : 0
      3. VCI : 35
      4. After entering the details click on Next.

    • Now enter the following details.

      1. Encapsulation Type: LLC/SNAP
      2. Encapsulation Mode: Bridged

      Then Click on Next.

    • In this page you may need to select Obtain an IP address automatically.

      You should enable NAT and Default Route if you wish to connect a switch and share Internet among multiple PCs. After selecting this, click on next.

    • Here you should enter the username and password given by BSNL. Service name should be BSNL. After entering the details click on next and on confirmation page click Apply. It is important to type the broadband service username in the right form. Do not forget to add @ part if you are given the username as an email address by ISP. If you have any doubts, you must contact technical support immediately.

  5. Reboot

    After finishing the setup you should reboot Nokia Siemens BSNL modem. To reboot, follow the steps below.

    • Click on Admin

    • Click on Reboot

    Select the option Reboot from last and click on Reboot button in the bottom. It may take few minutes to come back your modem.

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Display Driver Stopped Responding and has Recovered

Today my computer display just went black and came back within few second with an error message Display Driver Stopped Responding and has Recovered . It has extra details too; Display Driver Intel Graphics Accelerator Drivers for Windows Vista (R) stopped responding and has successfully recovered . I am using Windows 7 on my PC and I am confused after reading this message. Why do I get Vista error message on a computer running on Windows 7? To learn more about it, I went through many technical forums and blog and I realize it is a common issue. There are so many queries regarding this issue. If you haven't experienced it yet, the below image will give you more information.
Display Driver Stopped Responding and has Recovered

Reasons For Display Driver Error

Most of the users complain they received this warning after adding a new hardware to their computers. After adding a new Graphics card, changing PCI card etc, many users witnessed this issue. Overheating and outdated display driver are also in the suspected list. So before going through the solution, it is better ensure which reason caused this on your laptop.

Fix Display Driver Stopped Responding Issues
  1. Run Microsoft Troubleshooter

    It is recommended to run Microsoft troubleshooter Hardware Devices not Detected or not working to fix the display driver issues.

  2. Update Display Driver

    As I explained before. outdated display driver may stop the working of display on a laptop. It is recommended to update the drivers to the latest version available. You can download the latest version from the manufacturer website.

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How to Disable Windows File Indexing

Indexing is the process of creating records of programs and other files on your Windows computer. It helps to fetch search results faster using Microsoft OS search. Indexing process consume a portion of overall system efficiency. If you use the search feature very often on your laptop, it is better keep the indexing active but if you don't care much about search speed, you can disable it. Disable indexing can improve the system performance a little bit more. Windows 7 is always looking for files to be updated to its index and it may reduce efficiency. If you are looking for a fast system search, you should not turn off this feature. If you are looking for performance and don't bother the speed of file search for a particular program or file, it is better you turn off indexing feature. If you do not know how to do it, I suggest you to read the steps provided below.

Steps to Turn off Windows Indexing

In order to turn off indexing in Windows 8 and 7 computers, you need to enable don't use index in control panel. You can enable it by following the instructions below.

  1. Click on Start

  2. Go to Control Panel

  3. Click on Folder Options

  4. Click Search Tab in Folder Options Window

  5. Turn off Indexing

    To turn off it in Windows 8 and 7 computer, you should check the check box of "Don't use the index when searching in file folders for system files". After checking the box, you should click on Apply and OK. Now onwards your computer will not use this feature.

After completing this procedure your laptop will show a little more performance. However, in case if you want to look for a specific file on your laptop, you will see more time to find it by the OS. It is because there is no updates regarding the newer files to the OS index. So your laptop gets extra performance at the cost of slower file searching. If you have the habit of forgetting saved file locations, I recommend you to keep this feature active.

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