After update to Firefox 6.0 two websites are opening Welcome/Upgrade requests whenever I open the browser

I found that " Read it Later" and " Lat Pass" are inveriably opening webpages whenever I open Firefox. This is annoying.
Being disgusted I have ultimately uninstalled Firefox - though I have been using it for over 5 years.
Another point - what is the point of version updates, where several Add-ons are incompatiable. Further the speed with which the browser opens is after all these updates remains alnost the same. There are other browsers having superior speed-
Chrome or Opera. I note that even IE 8 is opening faster.

Firefox 7 is latest, you should run a clean install
* getfirefox.com
Make sure you are using latest Lastpass Addon 1.75.0?
* https://lastpass.com/misc_download.php?noscroll=1&tab=windows&anchor=ff#windowsff

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After downloading Mozilla Firefox 5.01 I couldn't open the browser. At the same time I couldn't open links in my Outlook email anymore. I decided to delete 5.01 but I could not. What went wrong

Till the latest version 5.01 Mozilla Firefox was my standard browser.

Whenever I log into icloud.com
Using what version of which browser?
iCloud.com requires Safari 6 or later, Firefox 22 or later, or Google Chrome 28 or later. Have you tried all of those?
If you have, have you tried clearing your browser cache and cookies?
For the first tine since 1989 I'm thinking about buying a PC.
You'd have exactly the same problems on an 8 year old PC too. It's a bit unreasonable to expect such an old Mac to continue to be compatible as software is constantly updated.
Saying that, I'm still able to access iCloud.com successfully in Safari v5.0.6 on a PowerPC Mac running Mac OS X 10.5.8, so the problem you're having is likely to be a browser issue, not something inherently wrong with the computer.
Since all this crap started, Mail won't download my Mac.com or me.com email.
The iCloud.com website is totally unconnected to Mail's ability to download email via IMAP. Have you checked the mail server settings are correctly setup and up-to-date?

After installing Firefox 5.0 and attempting to open the browser I get: Error: Platform Version '2.0.1' is not compatible with MinVersion = 5.0 MaxVersion = 5.0 At the top of the message is Yul Runner

While installing Firefox 5.0 and attempting to open the browser I get: Error: Platform Version '2.0.1' is not compatible with MinVersion > = 5.0 MaxVersion < = 5.0
Above the message in the border was XULRunner

That can happen if the updater wasn't able to update (replace) all the files in the Firefox program folder (C:\Program Files\Mozilla Firefox\).
Download a fresh Firefox copy and save the file to the desktop.
* Firefox 5.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Uninstall your current Firefox version.
* Do not remove personal data when you uninstall the current version.
Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
* It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
Your bookmarks and other profile data are stored elsewhere in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder] and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.

After updating to firefox 5 all my bookmarks are lost, and I can not find an old places.sqlite file. What happened to my bookmarks?

I updated from Firefox 3 to Firefox 5 (Windows XP), and all my bookmarks are lost. Maybe I should have thought of making a backup but I did not think of this and previously after an update I could find them again. Now I can not find my bookmarks anywhere, all files in my profile have a date and time from the new installation. Is there any chance of finding my bookmarks somewhere else on my computer? If so, where are they and how can I restore them?

Thanks for the answer. I read the article but it seems that the solution to my problem is not in there. Apart from the lost bookmarks Firefox is working fine, also I can make new bookmarks and delete them without problems. When I restart Firefox I don't loose them.
Apparently after installing Firefox 5 everything of Firefox 3 was deleted including my profile. The only bookmark .json file I have is from the new installation, which means it does not contain any of my old bookmarks. It now has today's date and time.
In my profile I have three 'places' files, now all with today's date and time:
- places.sqlite (10240 kb)
- places.sqlite-shm (32 kb)
- places.sqlite-wal (865 kb)
But even though places.sqlite is large, it apparently does not contain my old information. Or could it? Then how to get to it?

Firefox 4 will not accept a web based service "Silverlight" that I downloaded after updating to Firefox 4. I need this on-line access to pay taxes to the State of AR

The AR Dept. of Finance requires that a taxpayer download a web-based service that allows taxpayers online access to their tax accounts. I cannot get "Silverlight" to work with Firefox 4
''locking as a dupe - https://support.mozilla.com/en-US/questions/776855 ''

''I have it downloaded''
....You also have to run the downloaded Silverlight.exe file to install Silverlight. Open the Firefox [[Downloads window]] (via Tools -> Downloads") , right-click on the Silverlight.exe download entry and select "Open containing folder" to find the downloaded file, then close Firefox and double-click the exe file to start the installation.
See also [[Using the Silverlight plugin with Firefox]] and http://www.microsoft.com/getsilverlight/get-started/install/default.aspx for help downloading and installing Silverlight.

When i try to load certain page, the system crashed and the bottom panel states " stopped" but when I close and open firefox again,it can't and I get this message that says my firefox is still running and to open the browser i need to restart the compu

while browsing suddenly the system crashed and the bottom panel says " stopped".When closed and re-opened, I got a prompt that says firefox is still running and i have to close to open again or have to restart the computer but it doesn't work
== This happened ==
Every time Firefox opened
== just happened

You get message "firefox is still running" and computer restart doesn't help you. Try the advice below.
Make sure Firefox isn't running (end firefox.exe process in Task Manager or restart computer)
Find your profile folder
C:\Documents and Settings\USERNAME\Application Data\Mozilla\Firefox\Profiles\xxxxxxxx.default
find file "parent.lock" in it and delete it (the file is empty, its function is to signify to Firefox whether it's already open or not).
Then try to open Firefox again. Will it start or not? What will it say?

After updating to Firefox 5.0 I can't open Adobe pdf's on websites and in the preferences for Firefox it states it's incompatible. If this is the case how can I get the old version of Firefox back?

I can't open pdf adobe reader files from websites since updating to 5.0. If it truly is incompatible with the update then I need to know how to go back to the older version of Firefox so I can access these files.

Sorry you are having problems. First of all try Fifrefox's safemode.
*[[Troubleshoot Firefox issues using Safe Mode]]
If that works post back for further advice.
Next step, if safe mode did not work.
First: Try a clean install, (you have had a none standard version installed previously) that involves deleting the program files. Then if necessary try troubleshooting by creating and using a clean empty Firefox profile.
See
* this recent post [/questions/940399#answer-377134]
* http://kb.mozillazine.org/Standard_diagnostic_-_Firefox#Clean_reinstall
Second: try a New Profile
*http://kb.mozillazine.org/Profile_Manager#Creating_a_new_profile
* this will be an additional profile, it is still worth backing up any existing or currently working profile on a regular basis
**[[Back up and restore information in Firefox profiles]]
* Until you are absolutely confident about the repercussions I suggest
** always use an empty folder when creating a new profile
** never delete or rename profiles, just disable or remove shortcuts
** after creating a new test profile open it and check for any addons or plugins that may be have been included by default

After installing Firefox 6.0 and attempting to open the browser I get: Error: Platform Version '5.0.1' is not compatible with MinVersion = 6.0 MaxVersion = 6.0

I am running a Windows 7 computer with ZoneAlarm internet security.

That can happen if the updater wasn't able to update (replace) all the files in the Firefox program folder (C:\Program Files\Mozilla Firefox\).
Download a fresh Firefox copy and save the file to the desktop.
* Firefox 5.0.x: http://www.mozilla.com/en-US/firefox/all.html
* Uninstall your current Firefox version.
* Do not remove personal data when you uninstall the current version.
Remove the Firefox program folder before installing that newly downloaded copy of the Firefox installer.
* It is important to delete the Firefox program folder to remove all the files and make sure that there are no problems with files that were leftover after uninstalling.
Your bookmarks and other profile data are stored elsewhere in the [http://kb.mozillazine.org/Profile_folder_-_Firefox Firefox Profile Folder] and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.

I have downloaded Firefox 4.0.1. Upon opening the browser, I get the error message, JavaScript Application. Type Error. Components.classes[cid] is undefined Help. Thanks.

I do not have this problem with my other browsers: Chrome, Opera, and Safari.
I had no trouble like this with earlier versions of Firefox, before 4.0.1.

That indicates you have an add-on that is not compatible with Firefox 4. For details of how to troubleshoot that see https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

The firefox page comes up when i open the browzer. How do I keep this from happening??

The Firefox page comes up when i open the browser. How do I keep this from happening??

Press command + option + esc keys together at the same time. Wait.
When Force Quit window appears, select the Safari if not already.
Press Force Quit button at the bottom of the window. Wait.
Safari will quit.
Relaunch Safari holding the shift key down.
For more on this:
http://www.thesafemac.com/eliminating-browser-redirects-and-advertisements/

How do I remove the bookmark toolbar icons for websites? After updating to Firefox 22, add-ons don't help.

In the Bookmark Toolbar, the icons for websites take up too much space and are distracting. I used to use the Bookmarks - Deiconizer add-on but after updating to Firefox 22 it doesn't work anymore.
I tried adjusting the userChrome.css as in other posts but that does not work.
Please help!

Hi haweyext,
Did you see this thread from yesterday:
[https://support.mozilla.org/en-US/questions/964732 How do I keep the icons out of my Bookmarks Toolbar (tried Bookmarks Deiconizer) even after downloading files?]
If userChrome.css isn't working (note: you need to exit and restart Firefox before it takes effect), you can apply that rule to Firefox using the Stylish extension instead.
Does any of that help?

I am unable to view flash videos from all websites except youtube after updating to Firefox 4. All help will be appreciated. Thanks in advance :)

I am unable to view flash videos from all websites except youtube after updating to Firefox 4. All help will be appreciated. Thanks in advance :)

Start Firefox in [[Safe Mode]] to check if one of the extensions 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
* [[Troubleshooting extensions and themes]]
If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
* Use "Disable all add-ons" on the [[Safe mode]] start window to disable all extensions.
* Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")
In Firefox 4 you can use one of these to start in [[Safe mode]]:
* Help > Restart with Add-ons Disabled
* Hold down the Shift key while double clicking the Firefox desktop shortcut (Windows)

I can not use the Chessproblems website after updating to Firefox 5

After updating to Firefox 5 I can not have full access to the Chessproblems website, http://www.chessproblems.com/prob.php?id=648&next=1
I had no problems before. Can you help with this?
Thanks,
Edward

Solved after downloading last Java version

After update to Firefox 15 it crashes after javascript call window.close();opener.alert('test');. Is this working as intended or is it a bug?

After update to Firefox 15 it crashes after javascript call from a popup window.close();opener.alert('test');. Is this working as intended or is it a bug?

According to the pages linked to the crash ID, there is a bug report on this.
Does the crash occur as soon as you run those two lines of code, or after dismissing the alert()?
If this is your application, why are you running script commands after calling window.close()? Could you avoid the problem by using an approach like this:
 window.setTimeout(function(){opener.alert('test'},250);
window.close();

Problem loading pages after update to Firefox 36

After updating from Firefox 35.0.1 to version 36, I am unable to load any pages in Firefox. (My internet connection is fine and I can use other browsers on the same computer.)
I've already tried many troubleshooting routines to fix the problem but none have worked. I've tried the instructions here:
https://support.mozilla.org/en-US/kb/fix-problems-connecting-websites-after-updating
(including troubleshooting my Firewall and proxy settings)
and here:
https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can
I've also tried the more general and extensive troubleshooting here:
https://support.mozilla.org/en-US/kb/troubleshoot-and-diagnose-firefox-problems
NONE of the suggestions in any of those pages solved the problem. Opening Firefox is Safe Mode did not help either. I was unable to load pages even in Safe Mode.
After following all of the steps in all of those troubleshooting guides and still failing, I uninstalled Firefox completely. (I followed all official directions on how to uninstall.) Then I re-installed Firefox VERSION 35.0.1. Firefox again worked fine with the older version.
Then I restored my profile from a backup using MozBackup. (My most recent backup was done when I had Ver. 35.0.1 installed.) Everything was still fine; Firefox worked fine and all of my settings were back to my preferences.
Finally, I again tried to update to version 36 - and the same thing happened! Unable to load any pages!
One other thing I've noticed: With version 36 installed, there is something wrong with my Options dialog. The first time I upgraded, I had only blank tabs for "General" and "Advanced"; with my second try, after updating to V 36 my Options dialog has blank tabs for "General" and "Search" (although Advanced is now showing.)
I am going to uninstall again, and again go back to V 35.0.1. But I would like to be able to update to the newest version. What can I do?
(I am a long-time Firefox user, and reasonably computer savvy. I have many extensions installed as I use Firefox as an important tool in my job as a website designer. I have Firefox extensively fine-tuned to my liking to optimize my work-flow.)
Any help appreciated!

Your message seems to have covered all the normal things we check.
When you tried using v36, did you have any add-ons? Have you tried;
'''https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles'''
'''Windows: 32-bit''' C:\Program Files\Mozilla Firefox\firefox.exe -p
'''64-bit''' C:\Program Files (x86)\Mozilla Firefox\firefox.exe -p
'''Mac:''' Navigate to '''/Applications/Utilities.''' Open the Terminal application.
In the Terminal application, enter the following:
/Applications/Firefox.app/Contents/MacOS/firefox-bin -p
'''Linux:''' In '''Terminal''' run: firefox –P
For users who have one or more builds from mozilla.org this will not work.
It would be best to have the full path so if you had placed the untared contents
in a folder in /home it would be /home/<username>/foldername/firefox/firefox –P
An easy way would be not to do it in a terminal but in say a launcher since
you have to point it to the firefox script in Firefox folder you can then add –P
on end. You can also have the exact "profilename" after the -P so Firefox
will start with that Profile.

After update to Firefox 6.0 two websites are opening Welcome/Upgrade requests whenever I open the browser

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