Why does Firefox 5 open external (internet, SMTP) e-mail in the browser rather than the Lotus Notes Client?

Using Lotus Notes as the system's primary mail client, '''some''' users experience external mail being opened in the browser rather than the the client. When they revert back to using an older version as the OS default browser, or indeed a different browser altogether, this does not happen.
Again, this does not happen with all installations of 5.0 - just a few.

go to "preferences" in Lotus Notes and enable "disable embodded browser for MIME mail" and it shoudn't open the browser anymore

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Why does Firefox 5 open links in a new tab or new window rather than within the same tab? Previous versions opened links in the same tab allowing use of the "back" button on the mouse. Having to close so many tabs and windows is really irritating.

Vista Ultimate SP2

The problem is just with the name of the tab, not with the contents of the page -- the page looks normal??
I ask about the page because Firefox 23 seems to have introduced a problem with Firefox's "fast back-forward cache" on the Google search results page. It is related to the "instant prediction results" feature interacting with Firefox is some different way. (More in this thread: [https://support.mozilla.org/en-US/questions/970863?page=2#answer-485663])
Might be related. Not sure.

I want Firefox to open a new session each time I use it rather than to try to recover my previous one; how do I go about this?

What more details do you need? I want to open a new session when I use your product rather than have the product go through the slow tedious process of trying to recreate the previous session.

Please see this support article on [[Session Restore]]. Follow the instructions under the "Configuring session restore" header. When you get to the step where it says "Show my windows and tabs from last time" you can choose from showing your homepage or showing a blank page instead.

Why does Firefox keep opening new Windows rather than a new Tab in the current window?

I have " Open a new Tab in the current Window" select in Preferences.
Why then does this version (Version 4) keep opening new Windows, rather than new Tabs in the current Window.
This feature worked fine in 3.6.1.3, but in Version 4, it is a frigging pain in the rigging!
C'mon, Mozilla - time for an URGENT update ...

That issue can be caused by an extension that isn't working properly.
*https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes
Start Firefox in [[Safe Mode]] to check if one of the extensions or if hardware acceleration is causing the problem (switch to the DEFAULT theme: Firefox (Tools) > Add-ons > Appearance/Themes).
*Don't make any changes on the Safe mode start window.
*https://support.mozilla.com/kb/Safe+Mode

TS4022 Why does my icloud open in internet explorer when it is not my main browser?

Why does icloud open in internet explorer when I use Google as my main browser? I did something to make it happen and can't find how to change it back.

Hey man I was having the same problem and I found the answer.... Im going to put the steps you have to follow.
1.Open www.icloud.com on your Internet Explorer and if you're signed in you have to sign out.
2. Open www.icould.com on your Google Chrome and then sign in and click on the box that says "stay signed in" or something like that.
3. Try to open icloud the normal way you do it and it has to open on Chrome.
This worked for me, hopefully it works for you man, let me know.

Why does Firefox keep opening 3 random tabs while browsing different websites?

Just to clarify: They are never spam websites. They may be 3 of the same website, but it is always random. I only browse safe websites. This usually happens while Stumbling (StumbleUpon).
For example:
StumbleUpon brought me to this website:
[[http://www.thecreatorsproject.com/blog/5000-fiber-optic-flowers-invade-museum-grounds-in-ifield-of-lighti]]
Then it also opened three of this webpage:
[[https://en.wikipedia.org/wiki/First_Earth_Battalion]]
They have nothing to do with each other. Why does this keep happening? I searched with Anti-Malwarebytes, SuperAntiSpyware and Microsoft Security Essentials. No viruses.
I have Windows Vista Home Basics 32-bit. And is running Firefox 8.0. (This problem existed in 7.0 and previous as well.

I've already done this, and it says nothing is wrong with my system.

Why does Firefox sometimes open a new window when I navigate to an existing tab?

I often have 7 or 8 tabs open in Firefox. Sometimes when I click on a tab, Firefox opens it in a new window instead of just going to that tab. I haven't figured out a pattern when it does this.

A very slight movement (usually downward) will cause the tab to "tear off"/"tear away" into a new window. You can drag the tab back to the original window from the new window.
You can install this Add-on to stop the "tear off"/"tear away" behavior:
*https://addons.mozilla.org/en-US/firefox/addon/bug489729-disable-detach-and-t/
'''If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.'''
Not related to your question, but...
You need to update some plug-ins:
*Plug-in check: https://www-trunk.stage.mozilla.com/en-US/plugincheck/
*Adobe Shockwave for Director Netscape plug-in: [https://support.mozilla.com/en-US/kb/Using%20the%20Shockwave%20plugin%20with%20Firefox#w_installing-shockwave Installing ('''''or Updating''''') the Shockwave plugin with Firefox]
*Next Generation Java Plug-in for Mozilla browsers: [https://support.mozilla.com/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox#w_installing-or-updating-java Installing or Updating Java in Firefox]

Why does Firefox repeatedly open new tabs when I open a .php file?

Hey guys!
I do web development and design. I've just set up my PC (Ubuntu 14.04 LTS) and installed my choice of software.
On the .php files I set Firefox as the default software to open with but now it opens about 50 odd tabs in the space of 3 seconds. How do I fix this?
Kind regards,
-Trey

You've hit a bug that happens when you set Firefox as the external "helper" application used to open a type of file (the "Warning!" paragraph [http://kb.mozillazine.org/File_types_and_download_actions#Setting_an_automatic_action here] links to the related bug reports, if you're interested).
See [[Firefox repeatedly opens empty tabs or windows after you click on a link]] for how to fix this.

Why does Firefox load an old links (from e-mails or a previously played POGO game) when it first opens instead of my homepage?

Every time I receive an (Outlook) e-mail with a link, Firefox will open and navigate to the link, but then seems to remember and reopens that link every time I start Firefox, instead of loading my homepage. If I receive another e-mail (with a new link), and I navigate to the new link or the wife plays a POGO game then it opens each time I start Firefox. I currently using version 4, but the problem has been going on since approximately the last 3 or 4 updates.

Open the Firefox preferences (from the "Tools" menu, choose "Options"). In the "General" section, you can change the "When Firefox starts..." option to show your home page, instead of showing your tabs from last time.

Why does Firefox comsume my computer when in Yahoo Mail

For the past week, something is effecting Firefox when in Yahoo Mail. It does not happen at any other web site.
# I do not allow automatic updates of any kind. No changes or additions (unless sneaky stealth attacks?) had been made to Firefox since update to version 12 in May. The only add-on I have is the Mozilla Archive Format, which I've been using for years.
# Windows and various security applications are up-to-date as of very recently.
# Several up-to-date anti-malware programs have found nothing on my computer.
# I tried Chrome and Opera. They do not have this problem, but I don't like either of them.
# I uninstalled Firefox, deleted everything related I could find, downloaded the current version (13) from Mozilla, installed, and rebuilt all my preferences. I got my bookmarks back by restoring from a bookmark backup. This changed nothing.
# I tried "Restart With Add-ons Disabled" in Firefox, but that did not help.
Firefox starts doing something very intensive once in Yahoo Mail. Sometimes it is in this state when it displays the first screen of mail boxes after I sign on. More often I can do a little bit of something, such as open a mail box or a single e-mail therein before the problem starts. From my perspective it starts this aberrant behavior just when I click on the next thing: open another e-mail; open a different mail box; delete an e-mail.
Normally while in Yahoo Mail, or at any other web site, Task Manager reports CUP usage at from 0% to 5%, occasionally a few percent more for a very brief flash. When this Yahoo Mail thing starts
# The CPU usage jumps to 25%, with occasional bursts up to 30+%. Task Manger shows it is due to the process firefox.exe*32.
# The browser will not respond to any controls. I can do nothing with the keyboard or mouse. No menu will open. This has never ended by itself.
# Task Manager reports the immediate drop of network activity to zero -- nothing going on over the phone line -- or so Windows thinks. Disconnecting the phone line does not release the browser or lower its CPU use.
# A few times the entire computer has locked. I have only been able to get out of it with the hardware reset button.
# Sometimes Firefox is totally unresponsive itself but I can cancel it via Task Manager.
# Sometimes the one and only thing in Firefox that responds is the "X" in the upper right hand corner. The browser screen disappears immediately.
# BUT, Task Manager shows the process firefox.exe*32 still running at 25% CPU. I can end said process with Task Manager, whereby CPU usage immediately drops to 0%, or somewhere close.
# Whatever is going on through Firefox prevents me from doing what I want -- and it seems probable that IT is doing something I don't want done, although I have not yet seen symptoms of that.
Where can I go from here?

Hi,
You can consider the [https://support.mozilla.org/en-US/kb/reset-firefox-easily-fix-most-problems Reset Firefox] feature via '''Help''' ('''Alt''' + '''H''') > '''Troubleshooting Information'''. If it is okay, you can then install the Mozilla Archive Format add-on.
If you have security software installed you can try to delete all existing entries for Firefox and its sub processes in the different configuration modules and try to fully trust/allow Firefox afresh. Even after network access is completed, Firefox would still need unlimited access to its disk cache/memory as well as its files. Please see [https://support.mozilla.org/en-US/kb/Firewalls this].
[http://kb.mozillazine.org/Firewalls AV/Firewall Configuration]

Why does firefox intermittantly open a new window when I click on an existing tab? This only happens when I have three or more tabs open.

Several times now Firefox 4.0.1, when clicking on a tab (three or more tabs open) I immediately moves that tab to it's own window and closes the tab in the existing window.

That is probably the "tear-off tabs" feature. A slight movement (usually downward) when clicking on an existing tab will cause that tab to "tear-off" and open in a new window. You can drag the tab back to the previous window. You can also install this add-on to stop the behavior: https://addons.mozilla.org/en-US/firefox/addon/bug489729-disable-detach-and-t/
 
 
'''You need to update the following.''' The Plugin version(s) shown below was/were submitted with your question and is/are out of date. You should update to avoid known security issues with the version(s) you have installed. Click on "More system info..." to the right of your question to see what was included with your question.
*Adobe Shockwave for Director Netscape plug-in, version 11.5.9.615
*Next Generation Java Plug-in 1.6.0_20 for Mozilla browsers
#'''''Check your plugin versions''''' on either of the following links':
#*http://www.mozilla.com/en-US/plugincheck/
#*https://www-trunk.stage.mozilla.com/en-US/plugincheck/
#*'''Note: plugin check page does not have information on all plugin versions'''
#*There are plugin specific testing links available from this page:
#**http://kb.mozillazine.org/Testing_plugins
#'''Update Shockwave for Director'''
#*NOTE: this is not the same as Shockwave Flash; this installs the Shockwave Player.
#*Use Firefox to download and SAVE the installer to your hard drive from the link in the article below (Desktop is a good place so you can find it).
#*When the download is complete, exit Firefox (File > Exit)
#*locate and double-click in the installer you just downloaded, let the install complete.
#*Restart Firefox and check your plugins again.
#*'''Download link and more information''': http://support.mozilla.com/en-US/kb/Using+the+Shockwave+plugin+with+Firefox
#'''Update the [[Java]] plugin''' to the latest version.
#*Download site: http://www.oracle.com/technetwork/java/javase/downloads/index.html (Java Platform: Download JRE)
#**'''''Be sure to un-check the Yahoo Toolbar option during the install if you do not want it installed.
#*Also see "Manual Update" in this article to update from the Java Control Panel in Windows Control Panel: http://support.mozilla.com/en-US/kb/Using+the+Java+plugin+with+Firefox#Updates
#* Removing old versions (if needed): http://www.java.com/en/download/faq/remove_olderversions.xml
#* Remove multiple Java Console extensions (if needed): http://kb.mozillazine.org/Firefox_:_FAQs_:_Install_Java#Multiple_Java_Console_extensions
#*Java Test: http://www.java.com/en/download/help/testvm.xml

Why does Firefox Help open Safari Help??

Am trying to remove a certificate from history. Looked into the Help from the header bar and the Help menu is named Safari Help, not one topic mentions Firefox. All I can think is WTF? It simply makes no sense to be using a Safari Help menu in a Firefox browser.
The Preferences menu for certificates has a delete/mistrust button that does not seem to do anything. By tapping on the arm of my chair I get the same results as tapping on that button.

You can access the Certificate Manager here:
*Firefox > Preferences > Advanced > Certificates/Encryption: View Certificates
You can remove the cert8.db file in the Firefox profile folder to remove all intermediate certificates. 
You can only distrust built-in root certificates, but doing this is not recommended.
You can use this button to go to the Firefox profile folder:
*Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)

Why does Firefox keep opening Facebook and how can I stop it happening?

I have Facebook open in secure mode on a Firefox home tab. Now every time I open Firefox it tries to open Facebook in insecure mode. If I close the tab it just opens another.
This is very annoying. How do I stop Firefox doing this?

Is this very recent? Did you install the new Thunderbolt/Ethernet update?
Clinton

Why does Firefox keep opening a separate Firefox tab along with my home page when I start it, and how do I stop it.

When I click on the Firefox icon, it opens my home page, but in a separate tab it opens a Firefox page. I only want my home page to open when I click the icon.

Firefox can store multiple home pages, make sure the other sites are not listed as home pages - https://support.mozilla.com/kb/How+to+set+the+home+page

Why does Firefox now open a new window "when I click on a link" while using? It's a new annoyance that only appeared when I downleaded or added an add-on or extension. Please help me! Thank you VERY much!

A new window opens when I click on a link or go to a new site.

Do you have that problem when running in the Firefox SafeMode? 
[http://support.mozilla.com/en-US/kb/Safe+Mode] 
''Don't select anything right now, just use "Continue in SafeMode."''
If not, see this: 
[http://support.mozilla.com/en-US/kb/troubleshooting+extensions+and+themes]

Why does Firefox 5 open external (internet, SMTP) e-mail in the browser rather than the Lotus Notes Client?

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