Most problems with Firefox can be fixed by following the troubleshooting methods described below. Try these steps in order. If one doesn't work, move on to the next one. If you need extra help with any of this, we have a community of volunteers standing by.
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I am using FrereDNS 37.235.1.174, 37.235.1.177 but when I change the DNS to google or my ISP both browsers work. Why does Safari work and Firefox doesn't? Is Safari bypassing the Mac OS network DNS settings?
Sometimes problems can be fixed by simply restarting your computer and then starting Firefox again.
Many problems with loading web pages can be resolved by clearing Firefox's cookies and cache:
- Click the Library button , click and select .
- In the Time Range to clear: drop-down, select Everything.
- Click the arrow next to Details to display the list of items that can be cleared.
- Select both Cookies and Cache.
- Click .
- Click the Library button , click and select .
- In the Time Range to clear: drop-down, select Everything.
- Below the drop-down menu, select both Cookies and Cache.
- Click .
Firefox Safe Mode is a troubleshooting mode that disables all extensions, uses the default theme, turns off hardware acceleration, and uses default toolbar settings and controls, among other things. To start Firefox in Safe Mode:
- Click the menu button , click help Click the menu button , click Help and select Restart with Add-ons Disabled…. Firefox will start up with the Firefox Safe Mode dialog. Note: You can also start Firefox in Safe Mode by holding down the shift key while starting Firefox.holding down the option key while starting Firefox.quitting Firefox and then going to your Terminal and running:
firefox -safe-mode
You may need to specify the Firefox installation path (e.g. /usr/lib/firefox) - In the Firefox Safe Mode dialog, click .
- Check whether your problem is still happening while in Safe Mode.
- If the problem still happens in Safe Mode, go on to step 4.
- If the problem does not happen in Safe Mode, see the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article and follow the instructions under The problem does not occur in Safe Mode to narrow down the cause.
Some Firefox issues can be caused by a problem with one of the Firefox program files. Follow these steps to completely remove and reinstall Firefox. This process will not remove your Firefox profile data (such as bookmarks and passwords), since that information is stored in a different location.
Note: You might want to print these steps or view them in another browser.
- Download and save the installer for the latest official version of Firefox from mozilla.org.
- Exit Firefox (if open): Click the Firefox menu , then click Exit.Click the Firefox menu at the top of the screen, then click Quit Firefox.Click the Firefox menu , then click Quit.
- Uninstall Firefox from your computer.
- Delete the Firefox program folder, which is located in one of these locations by default:
- C:Program FilesMozilla Firefox
- C:Program Files (x86)Mozilla Firefox
- Reinstall Firefox using the installer you downloaded earlier - see How to download and install Firefox on Windows for instructions.
- Download the latest official version of Firefox from mozilla.org.
- Quit Firefox: Click the Firefox menu , then click Exit.Click the Firefox menu at the top of the screen, then click Quit Firefox.Click the Firefox menu , then click Quit.
- Uninstall Firefox from your computer by opening the Applications folder in the Finder and dragging the Firefox application to the Trash.
- Reinstall Firefox - see How to download and install Firefox on Mac for instructions.
- Download the latest official version of Firefox from mozilla.org.
- Quit Firefox: Click the Firefox menu , then click Exit.Click the Firefox menu at the top of the screen, then click Quit Firefox.Click the Firefox menu , then click Quit.
- Uninstall Firefox - If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see Install Firefox on Linux for details. If you downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory to uninstall Firefox.
- Reinstall Firefox - see Install Firefox on Linux for instructions.
Now start Firefox and check to see if your problem has been fixed. If it hasn't, continue with the next troubleshooting method.
The Refresh Firefox feature can fix many issues by restoring your Firefox profile to its default state while saving your essential information.
Note: When using the refresh feature, your bookmarks, browsing history, open tabs, windows, passwords, cookies and web form auto-fill information will be saved. However, your extensions and themes will be removed and your preferences will be reset. Learn more.
- Click this Refresh Firefox button directly, if you are viewing this page in Firefox.
This won't work if you are using a different browser or on a mobile device.- You can also find a Refresh Firefox button at the top of the Firefox about:supportTroubleshooting Information page.
- To continue, click in the confirmation window that opens.
- Firefox will close to refresh itself. When finished, a window will list your imported information. Click and Firefox will open.
Note: There's also a Refresh Firefox button in the Firefox Safe Mode window, if you can't start Firefox normally. You can also do a manual refresh by creating a new profile and transferring your important data to the new profile.
Sometimes files in your Firefox profile folder that correspond to the essential information that a Firefox Refresh doesn't remove (such as bookmarks and browsing history) may be causing the issue. You can create a new, additional profile which will not contain any of your old Firefox data. See the Profile Manager - Create, remove, or switch Firefox profiles article for instructions.
If you've tried all of these troubleshooting methods and you're still having problems, here are some other solutions you can try:
Check browser internals
The Firefox Task Manager (about:performance page) lets you see what tabs or extensions are slowing down Firefox. Telemetry Data shared with Mozilla (about:telemetry page) contains detailed data about performance, hardware, usage and customization. The Troubleshooting Information page (about:support page) includes other about: page links and troubleshooting resources. (For a list of all about: pages, enter about:about in the address bar.)
Troubleshoot the Flash plugin
See Flash Plugin - Keep it up to date and troubleshoot problems.
Check for conflicts with your Internet security software
Some Internet security software (including antivirus, antispyware, and firewall programs) can cause problems with Firefox including blocking it from opening websites, crashes, and more. Often you can open the program's settings, remove Firefox from its list of allowed or trusted programs and it will be re-detected and things should start working again. If your program is listed at the Configure firewalls so that Firefox can access the Internet article, you can get specific instructions for how to properly reconfigure it.
Check for malware
Malware (short for 'malicious software') can cause problems with Firefox. Periodically, you should scan your system for viruses, spyware, or other malware. For more information, see Troubleshoot Firefox issues caused by malware.
Based on information from Standard diagnostic - Firefox (mozillaZine KB)
Active9 years ago
I'm trying to upgrade my site to Silverlight 3. All my customers are having a reasonabily good experience from upgrading to Silverlight 3 from Silverlight 2 or just a fresh install.
But on Mac OS X in Firefox 3.5, after Silverlight is installed they cant view any Silverlight apps, it's just blank on screen. No errors, I can right click on the app and access the Silverlight Preferences etc, but nothing renders. But it works absolutely fine in Safari.
Has anyone else had this problem?
BTW, I have also restarted the machine, but no luck.
Cheers,Ash.
AshAsh43411 gold badge88 silver badges1818 bronze badges
6 Answers
There was a fourth way :
in the object parameters where u have width and height, just set height to a fixed size in pixels.
it will appear correctly now on Firefox.
The problem stay a bug but u can use that work-around.
The problem in the future will be to define the host div height dynamically if the silverlight height change while using it.
3KyNoX3KyNoX
Solution 2, use w3c platform : My website respect w3c already but difficult to use dynamic functions like for a business app in Xhtml, Ajax and Css alone.
Solution 3, do not use Firefox : Sorry here too, 30% peoples using that browser and for the website i am making, it is potential customers.
I will follow the bug as i do currently, help and wait a little while continue using silverlight and keep first option :)
Thanks for your answer.
I traced the bug here =>https://bugzilla.mozilla.org/show_bug.cgi?id=506231
3KyNoX3KyNoX
I had the same issue with Silverlight not displaying content (Mac OS 10.5.8, FireFox 3.6.10). To solve the problem, I disabled my Firebug extension and restarted the browser. Hope that helps.
Dustin NordquistDustin Nordquist
It works fine in Firefox 3.5 on OS X (10.5.7). Check if you have the Silverlight Firefox plugin disabled.
MikeMike
Same for me, when i use plain aspx page to host silverlight 3 control it works :
But when i include my silverlight object (inside aspx page) between another div (to resize or nothing else for example), i got a blank page under firefox 3.5 :
Do the test by yourself with a new VS project.
Other browsers (opera, chrome, ie, safari) display the SL control correctly.
It looks like javascript problem, but currently do not know where...
3KyNoX3KyNoX
This is a known problem and you've basically got three options;
- Keep on developing with Silverlight and expect these kind of problems surfacing frequently in the future - even if you can get your application to work this time, it'll still surface later down the road every once in a while.
- Port your application to the W3C platform (ECMA, CSS, (X)HTML) utilizing some sort of Ajax library - and hence get rid of the problem permanently.
- Entirely drop any non-Microsoft based OS support for your application. Silverlight will occasionally and partially work with many non-Microsoft based Operating Systems, but once Microsoft have acquired the market share they want for Silverlight they will have no financial incentives in getting Silverlight to work with neither Mac OS X, Linux, Symbian, iPhone or any other Operating Systems in this world not created by themselves - in fact their financial incentives will be in getting it NOT to work on non-MS based Operating Systems since this will drive adoption of their Operating Systems like Windows 7, WindowsMobile etc. For you to follow this strategy is obviously quite dangerous since Microsoft is bleeding market shares to Linux and especially Mac OS X on the client. Not to mention that they have probably less then 1% of the mobile phones in this world. Which all together translates into less customers (users) for your applications. But if you can be positively certain about that your customers are purely going to want to use your applications with Microsoft based Operating Systems, then I guess it doesn't matter that much for you...
I know it sounds drastic, but the 'object tag' should have been the clue-giver here. Silverlight is nothing but ActiveX in a new wrapping with a new name and some new fancy colors - or ActiveX2.0 if you wish. And we all know how ActiveX1.0 worked...
Microsoft have created some spectacularly great innovations through out their history, the .Net Framework and the C# language being one of them, but neither ActiveX1.0 nor ActiveX2.0 are among those great innovations. Silverlight is kind of like the 'Windows Millennium of Frameworks' - buggy, expensive and gives few if any benefits to its users. But comes wrapped inside a beautiful package that makes people 'buy into it'...