I have been using Firefox for years but recently when I tried to watch some videos on Facebook that my friend had uploaded, I was unsuccessful.Can someone help?

Whenever I would try to watch a video posted by someone on Facebook, nothing would happen when I pressed the 'play' button. With Internet Explorer, however, the video would play normally.

Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
*Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
*Tools > Options > Privacy > Cookies: "Show Cookies"
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.org/kb/Safe+Mode
I also noticed that some software has change the keyword.URL pref that sets how searches via the locaction bar are done.
*http://startsear.ch/?aff=1&src=sp&cf=c5cd945e-0594-11e1-8f5c-0025644524bf&q=
See:
* https://support.mozilla.com/kb/Location+bar+search
You can try to use this extension to reset the search settings.
*https://addons.mozilla.org/firefox/addon/searchreset/

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Have been using firefox for years but now having many problems two days ago could not acess any web pages without a firefox message saying page could not be ver

Went on the internet on Friday but a box appeared saying firefox could not verify web page and somebody could be trying to impersinate the web page this was my home page it gave me two options the first was get me out of here or that I understood the risks and to continue I clicked the latter and my home page came up this box continued to appear on each occasion I tried to acess any web pages but when I tried to acess Facebook the box only gave me the option of get me out of here it also did this when I tried to acess Mozilla Firefox to see whether there was a problem with the browser I tried to reinstall the browser but the problem persisted I finally got round the problem by reinstalling my computer to an earlier time before I did this I also have the option for Google chrome on my computer and this browser worked fine Facebook etc I prefere Firefox but although the warning box hasn't materialised since I reset my computer Firefox has become unstable where it has frozen on a web page and the only way I can get out is to start the task manager and end the programme even though the task manager is saying that the page is still working correctly but after I have ended the running of the programme it will not reload the firefox browser but again google chrome is fine I have to restart the computer to fix this problem any ideas thanks.

Can you attach a screenshot?
*http://en.wikipedia.org/wiki/Screenshot
*https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem
*Use a compressed image type like PNG or JPG to save the screenshot
*Make sure that you do not exceed the maximum size of 1 MB
Check the date and time and time zone in the clock on your computer: (double) click the clock icon on the Windows Taskbar.
Check out why the site is untrusted and click "Technical Details" to expand this section.
If the certificate is not trusted because no issuer chain was provided (sec_error_unknown_issuer) then see if you can install this intermediate certificate from another source.
You can retrieve the certificate and check details like who issued certificates and expiration dates of certificates.
*Click the link at the bottom of the error page: "I Understand the Risks"
Let Firefox retrieve the certificate: "Add Exception" -> "Get Certificate".
*Click the "View..." button and inspect the certificate and check who is the issuer of the certificate.
You can see more Details like intermediate certificates that are used in the Details pane.
If "I Understand the Risks" is missing then this page may be opened in an (i)frame and in that case try the right-click context menu and use "This Frame: Open Frame in New Tab".
*Note that some firewalls monitor (secure) connections and that programs like Sendori or FiddlerRoot can intercept connections and send their own certificate instead of the website's certificate.
*Note that it is not recommended to add a permanent exception in cases like this, so only use it to inspect the certificate.

Have been using Firefox for years, but downloaded BearShare and now it has taken over the browser. Deleted it but still have it on start page. Tried downloading firefox again and again but its still there. Cannot access my bookmarks or anything else on

Cannot delete BearShare tool bar from top of Mozilla browser.
== This happened ==
Every time Firefox opened
== a day or two ago ==
== User Agent ==
Mozilla/5.0 (Windows; U; Windows NT 6.0; en-US) AppleWebKit/533.16 (KHTML, like Gecko) Version/5.0 Safari/533.16

Hello Joe.
If BearShare is an extension, you can go into ''Tools > Add-ons > Extensions'' to disable or uninstall it.
If it's a plugin, go into ''Tools > Add-ons > Plugins'', where you can disable it. To uninstall it completely, you need to contact its author for support, as it's done outside the browser. In case it's a plugin.
I hope this helps.

I have been using Firefox for years but last week I experienced a crash.

I removed Firefox from my desktop and tried to reinstall Firefox 5.
After installation at automatic startup I received the following message : Quote: ALERT - Could not utilize the applications security component. The most likely cause is problems with files in your applications profile directory.
Please check that this directory has no read/write restrictions and your hard disk is not full or close to full. It is recommended that you exit the application and fix the problem. If you continue to use this session, you might see incorrect application behaviour when accessing security features. Unquote.
What should I do to check the above????
Bracht - Callantsoog NL

Clear the cache and the cookies from sites that cause problems.
"Clear the Cache":
*Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
"Remove Cookies" from sites causing problems:
*Tools > Options > Privacy > Cookies: "Show Cookies"
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.org/kb/Safe+Mode
I also noticed that some software has change the keyword.URL pref that sets how searches via the locaction bar are done.
*http://startsear.ch/?aff=1&src=sp&cf=c5cd945e-0594-11e1-8f5c-0025644524bf&q=
See:
* https://support.mozilla.com/kb/Location+bar+search
You can try to use this extension to reset the search settings.
*https://addons.mozilla.org/firefox/addon/searchreset/

Firefox.exe has encountered a problem and needs to close. We are sorry for the inconvenience. I have been using firefox for years. I installed the latest version of Firefox. It worked fine for several days. Now I get the above message each time I try to s

firefox.exe has encountered a problem and needs to close. We are sorry for the inconvenience.
I have been using firefox for years. I installed the latest version of Firefox. It worked fine for several days. Now I get the above message each time I try to start Firefox, even in safe mode. i have checked with latest antivirus softwere also.. i didn't find any thing suspicious.
== This happened ==
Every time Firefox opened
== after loading firefox 3.6.6 ==
== User Agent ==
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.4 (KHTML, like Gecko) Chrome/5.0.375.99 Safari/533.4

I was having this problem few days ago,and I have fixed.Try this steps-If you have AVG antivirus so go on firefox>Tools>Add On and Disable AVG safe search and AVG tool bars too.Then restart computer.

Several sites will not respond any longer when I type or click on them. I have been using Firefox for years and all of a sudden, nothing.

I have been using Firefox for many years now and have been going to several sites on Firefox. Now, after an update around two days ago, I can't do anything with the sites. The cursor stays an arrow, and doesn't click anything. It's like a blank page with print on it.
I've tried almost everything, but to no avail. It's too much to copy and paste below.
Any ideas or help would be very much appreciated.
Also, http://tesnexus.com is another site, plus a few others, besides google.com.

Hi Papajack55,
I'd try starting Firefox in [[Safe Mode]]. If you don't have the issue while all of your add-ons, extensions, and themes are disabled, you can try adding them back in one by one until you find the culprit. You should look at the [https://support.mozilla.org/en-US/kb/Troubleshooting-extensions-themes Extensions and Themes troubleshooting guide ] and the [[Troubleshooting plugins]] article as well.
Hopefully this helps!

Can not connect to the internet. This is a new problem since I have been using firefox for years.

I can not connect to the internet. I called mediacom due to the problem and they connected me to internet explorer. They indicated I should contact you for help in connecting to the internet. It appears firefox has made some kind of change since last night since I was using firefox for my internet connection last night. Something has changed. Your help will be appreciated.

http://en.wikipedia.org/wiki/Keyhole_Markup_Language
The only way that file opens thru IE8 for me ''(but not actually in IE8)'' is by using the Zip Utility (then IE closes) that is in WinXP and then opening the two image files in the Windows Fax and Picture Viewer.
I think Firefox is trying to display that file because the MIME-type is for '''''text/plain''''' instead of the appropriate MIME-type of '''application/vnd.google-earth.kml+xml''' or '''application/vnd.google-earth.kmz'''
That is something that needs to be configured in the server that is hosting that file type. Sorry, I don't know how that can be fixed. The one support person here that might know lives in Europe ''(I believe)'', so you might need to wait for an answer.

I have been using Firefox for years. When I downloaded the Firefox 20.0, I can type in my hotmail address, but my hotmail won't open.

I am able to type in the address bar, but when I hit enter, nothing happens. And I don't like using Internet Explorer. This happens when I try to acccess my hotmail account. I never had this problem with other versions of Firefox.

We are aware of issues using the address bar. A push to fix the issue will be made in 3-5 days. In the meantime since your issue is a little different that what we have you can try safe mode.
'''Try Firefox Safe Mode''' to see if the problem goes away. Safe Mode is a troubleshooting mode, which disables most add-ons.
''(If you're not using it, switch to the Default theme.)''
* You can open Firefox 4.0+ in Safe Mode by holding the '''Shift''' key when you open the Firefox desktop or Start menu shortcut.
* Or open the Help menu and click on the '''Restart with Add-ons Disabled...''' menu item while Firefox is running.
''Once you get the pop-up, just select "'Start in Safe Mode"''
'''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, and you need to figure out which one. Please follow the [[Troubleshooting extensions and themes]] article for that.
''To exit the Firefox Safe Mode, just close Firefox and wait a few seconds before opening Firefox for normal use again.''
''When you figure out what's causing your issues, please let us know. It might help other users who have the same problem.''

I have been using firefox for years and love it but I have downloaded version five and I cannot get on line again. The google screen comes up but if I try to go further I get "site unavailable" or similar.

After downloading v5 I ran the programme as instructed. THe google screen "find out more" came up but I was unable to get access to the browser again

Can you attach a screenshot?
*http://en.wikipedia.org/wiki/Screenshot
*https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem
*Use a compressed image type like PNG or JPG to save the screenshot
*Make sure that you do not exceed the maximum size of 1 MB
Check the date and time and time zone in the clock on your computer: (double) click the clock icon on the Windows Taskbar.
Check out why the site is untrusted and click "Technical Details" to expand this section.
If the certificate is not trusted because no issuer chain was provided (sec_error_unknown_issuer) then see if you can install this intermediate certificate from another source.
You can retrieve the certificate and check details like who issued certificates and expiration dates of certificates.
*Click the link at the bottom of the error page: "I Understand the Risks"
Let Firefox retrieve the certificate: "Add Exception" -> "Get Certificate".
*Click the "View..." button and inspect the certificate and check who is the issuer of the certificate.
You can see more Details like intermediate certificates that are used in the Details pane.
If "I Understand the Risks" is missing then this page may be opened in an (i)frame and in that case try the right-click context menu and use "This Frame: Open Frame in New Tab".
*Note that some firewalls monitor (secure) connections and that programs like Sendori or FiddlerRoot can intercept connections and send their own certificate instead of the website's certificate.
*Note that it is not recommended to add a permanent exception in cases like this, so only use it to inspect the certificate.

I have been using Firefox for years. I just downloaded your newest version. The new version shows to be downloaded successfully, but when I click Firefox Icon, I get a window that is called "Offline mode"

It states, "Firefox is curerntly in offline mode and cona't browse the web. It says to uncheck the "work offline" menu item.

See:
*File > [ ] Work Offline
Press F10 or press and hold the Alt key down to bring up the "Menu Bar" temporarily.

I cant log into my hotmail account using Firefox but I can logonto and use it on Internet explorer, this is a new problem and I have been using Firefox for years

This started about 1 week ago

Clear the cache and the cookies from sites that cause problems.
* "Clear the Cache": Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now"
* "Remove the Cookies" from sites causing problems: Tools > Options > Privacy > Cookies: "Show Cookies"

I have been using CS4 for years but have had to do a clean install of OSX Snow Leopard

CS4 will now not open. it says licence expired, is there any way of getting this to work

Hi Badger49,
Open control panel, double click on color management.
Check the box that reads "Use my settings for this device".
Click on Add and choose the profile "sRGB IEC61966-2.1 and make it the default profile.
Also if you have a secondary monitor unplug it.
Try to re launch Lightroom and check if the issue persists.
Please reply if you need further help.
Thank you for posting on Adobe Forums.

I cannot download and then bring up Firefox. I had been using it for months but now when I clik on the Icon I get nothing !

I have been using Firefox for months, but now when I click on the icon I cannot open a page. I tried downloading again but still get tnothing.
I can get on Explore just fine but I want to get back to using Mozilla Firefox.

Nothing is worse than IE.
You can try the following:
Save your bookmarks.html in
%userprofile%\Application Data\Mozilla\Firefox\profiles\
Delete the whole content of the profiles-directory
Then create a new profile and start FF again. Now you can import your bookmarks.
Otherwise look here:
https://support.mozilla.com/en-US/kb/Firefox%20will%20not%20start

Could not get firefox to start this time, have been using it for years

I have been using firefox for years on my hp laptop. It happened that now I could not get it opened. I have tried uninstalling and reinstalling it, still clicking on the firefox symbol and waited. It just stoped downloading. I have tried many times. Other browsers still work.

I have the same problem...Hotmail say to optimize the browser you use, so we need to know how to optimise FF 3.5.13 please..

Been using Firefox for years, yesterday not able to get Firefox page at all, page comes up blank

I have been using Firefox for years. Somehow I seem to have blocked it. I get a blank page when trying to enter the site. What to do? thank you

Can you attach a screenshot?
*http://en.wikipedia.org/wiki/Screenshot
*https://support.mozilla.org/kb/how-do-i-create-screenshot-my-problem
*Use a compressed image type like PNG or JPG to save the screenshot
*Make sure that you do not exceed the maximum size of 1 MB
Check the date and time and time zone in the clock on your computer: (double) click the clock icon on the Windows Taskbar.
Check out why the site is untrusted and click "Technical Details" to expand this section.
If the certificate is not trusted because no issuer chain was provided (sec_error_unknown_issuer) then see if you can install this intermediate certificate from another source.
You can retrieve the certificate and check details like who issued certificates and expiration dates of certificates.
*Click the link at the bottom of the error page: "I Understand the Risks"
Let Firefox retrieve the certificate: "Add Exception" -> "Get Certificate".
*Click the "View..." button and inspect the certificate and check who is the issuer of the certificate.
You can see more Details like intermediate certificates that are used in the Details pane.
If "I Understand the Risks" is missing then this page may be opened in an (i)frame and in that case try the right-click context menu and use "This Frame: Open Frame in New Tab".
*Note that some firewalls monitor (secure) connections and that programs like Sendori or FiddlerRoot can intercept connections and send their own certificate instead of the website's certificate.
*Note that it is not recommended to add a permanent exception in cases like this, so only use it to inspect the certificate.

I have been using Firefox for years but recently when I tried to watch some videos on Facebook that my friend had uploaded, I was unsuccessful.Can someone help?

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