Firefox causes other windows to disappear visually

If I have a Firefox window open and then have another window up on top of it, sometimes the Firefox windows causes the other window to disappear and I have to minimize Firefox or the other window to bring it back up. Firefox is cause the other window to disappear only, it does shut it down. It seems like Firefox causing a memory issue, but I'm not the expert.

I am currently using Firefox 13; I'm on the Beta Update channel and get downloads as they're issued. I remember having some problems with Firefox 12 and, in fact, earlier Beta versions which is why I stayed away from them. However, Firefox 13 seems to be working OK. You might try to find it at the Mozilla website.

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Firefox causes entire Windows 7 x64 PC to Hang

PC hangs for about 2 to 3 minutes and comes back. Everytime it hangs I get the following System Event: "The Windows Error Reporting Service service entered the running state". And when the system runs again it gives the same message but says "The Windows Error Reporting Service service entered the stopped state". Sometimes I also get this in addition: "The Application Experience service entered the running state". This error happens every 15 to 30 minutes when I browse the web and is not repeatable. Chrome and IE work fine and don't cause hangs. This error happened with FF 3.6 and now also with 4.0. PC has 8GB DDR3 RAM, AMD X2, HD5850 GPU. I have reinstalled FF from scratch with all profiles removed and it still does the same. Also have restarted FF in safe mode with all add-ons and extensions disabled. During hang, I can still move the mouse, and switch some windows, but opening windows happens very slowly with long waits with the blue circle. CPU is not running high and I'm unable to manually terminate the Firefox process. Full system info attached.

Hi,
I think you have to install other drivers (3 of them) too.
Regards,
BH
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Firefox overlapps other windows

Since I've installed Firefox 4, I've a display problem.
Regularly, when any software is open, if Firefox is in the background, the Firefox windows come on the display front, partially over the active window. See attached pictures: [http://i55.tinypic.com/2j19xxz.jpg Print screen]
This problem never happens with Firefox 3.x.
I've the same problem with Adobe Acrobat Pro X. The problem first happened with the upgrade of Adobe Acrobat Pro 9.2.
I've Windows XP SP3. The system has been completely reinstalled, but the problem is still there.

I don't think it was a Google Calendar program. It came some time (years) ago with Mozilla Firefox. Its name may have included "Reminders". Originally, the icon of a ribbon showed up on the top of the browser, like next to "Help". You clicked on it there you got the Calendar. A few months ago, the ribbon icon disappeared and you had to click on "Tools" and that program showed up in about the 4th position. I think the data was stored on the Web, and therefore I was hoping to recover it.
Sorry, I don't know what Thunderbird is or Lightning.
Thanks for trying to help,
Joost Mortelmans

Installed Firefox on other Windows laptop, but don't see a way to get your Calendar program (with the Ribbon) installed or downloaded.

My IBM laptop was stolen yesterday and I am trying to recover on a Dell laptop.
Mozilla Firefox is installed, but how do I get your Calendar program showing up under Tools, like it did on my first laptop?

I don't think it was a Google Calendar program. It came some time (years) ago with Mozilla Firefox. Its name may have included "Reminders". Originally, the icon of a ribbon showed up on the top of the browser, like next to "Help". You clicked on it there you got the Calendar. A few months ago, the ribbon icon disappeared and you had to click on "Tools" and that program showed up in about the 4th position. I think the data was stored on the Web, and therefore I was hoping to recover it.
Sorry, I don't know what Thunderbird is or Lightning.
Thanks for trying to help,
Joost Mortelmans

When I have my Firefox browser running, if I bring up a document from my computer, it appears briefly, then disappears behind the browser. It shows in the taskbar, but won't stay on top until I minimize all other windows.

When I have my Firefox browser running, if I bring up a document from my computer, it appears briefly, then disappears behind the browser. It shows in the taskbar, but won't stay on top until I minimize all other windows.

Hi NicoMan,
According to your description ,we seem to suffer a performance issue here.
Have you tried to open the task manager to check the system performance ? Is there any specific process occupied many system resources ?Will the issue occur only with the specific applications ?
We can try to restart the Windows Explorer process to have a check.
If it only occurred with the spefcific two applications ,we can try to end the other application processes manually from the task manager to have a check .
If this is caused by the specific application ,we may need to look for help from the third party support considering they are all the third party applications .
Best regards
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Top and bottom of FireFox window disappear in seconds (the window expands too far). All other windows operate normally. Now what? I've uninstalled and reinsta

I was using Firefox for a few years with great enjoyment. Recently I opened it and within a second or so, it enlarged to the point that the top and bottom of the screen expanded off the screen. No other windows in any other program are doing this. The only way to close it is by using the task manager. Very frustrated. What other info do you need?

Hi ConnieHampton,
FIrefox will remember the last window size you had, which is why it keeps opening too large each time you open and close it. To fix this, try resetting Firefox: https://support.mozilla.org/en-US/kb/changes-toolbars-and-window-sizes-are-not-saved?esab=a&s=resize+window&r=7&as=s
If you don't see your menu bar, you may be in full screen mode, and can turn it off by following these instructions: https://support.mozilla.org/en-US/kb/how-make-firefox-and-websites-go-full-screen?esab=a&s=full+screen&r=0&as=s
If this doesn't work, please let us know and we'll figure out another way to fix it.

Have updated firefox and my e-mail at terra.es has disappeared .with no mail shown or history.how can i recover my mail or get back to original firefox. am on windows 7.

have updated firefox and my e-mail at terra.es has disappeared .with no mail shown or history.how can i recover my mail or get back to original firefox. am on windows 7.

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"
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]]

When I minimize firefox, the icon at the bottom of window screen disappeared.

* When I minimized the FireFox window, the icon at the bottom of the window screen disappear. I have no way to get the window out anymore, but to initiate another instances of Firefox.
* Recently I found that Firefox start up is tremendously slow. It seems to slow down my pc a lot too.

it says hide in the menu but the window is not showing. the only way to get the window to show is the drag 4 fingers down but then it goes away again if i click on window.

Everytime I open Firefox 5, a window pops up that says,"TypeError: Components.classes[cid_siterank] is undefined,"with an ok button on it. I want this box to disappear.

Everytime I open Mozilla Firefox 5 Beta, a window pops up that says, "TypeError: Components.classes[cid_siterank] is undefined," with an "ok" button, after I click ok, it opens firefox, how do I stop this window from appearing everytime I open firefox? It never did this with previous versions of firefox.

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
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)
* https://support.mozilla.com/kb/Troubleshooting+extensions+and+themes

I uninstalled my firefox cause I edited something I shouldn't have why is it all my extension and bookmark didn't disappear?

I uninstalled my firefox cause I edited something I shouldn't have why is it all my extension and bookmark didn't disappear?. If those didn't reset to zero then did the files I edited in firefox didn't disappear?.

What kind of change(s) did you make?
*https://support.mozilla.org/kb/Basic+Troubleshooting
*http://kb.mozillazine.org/Standard_diagnostic_-_Firefox
Firefox stores your personal data in the Firefox profile folder and that data is not affected by an uninstall and reinstall.
*http://kb.mozillazine.org/Profile_folder_-_Firefox

Why does firefox cause windows vista to crash

why does firefox cause windows vistra to crash

hello, as long as the download-process isn't finished a file gets the .part extension appended - this is the expected behaviour in firefox...

Don't know the name of it but a toolbar at the top of the window has disappeared after I restarted Firefox. It contained add-ons such as Download Helper and I don't know how to get it back. Please help. Thanks!

I don't know the name of it but a toolbar at the top of the window has disappeared after I restarted Firefox. It contained add-ons such as Download Helper and I don't know how to get it back. Please help. Thanks!
EDIT: Sorry I meant the "Save Complete" add-on, not Download Helper.

Be sure "Add-on Bar" is checked (click on "Add-on Bar" to check or un-check)
*See --> https://support.mozilla.org/en-US/kb/Back%20and%20forward%20or%20other%20toolbar%20items%20are%20missing
'''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 may need to update some plug-ins. Check your plug-ins and update as necessary:
*Plug-in check --> http://www.mozilla.org/en-US/plugincheck/
*Adobe Shockwave for Director Netscape plug-in: [https://support.mozilla.org/en-US/kb/Using%20the%20Shockwave%20plugin%20with%20Firefox#w_installing-shockwave Installing ('''''or Updating''''') the Shockwave plugin with Firefox]
*'''''Adobe PDF Plug-In For Firefox and Netscape''''': [https://support.mozilla.org/en-US/kb/Using%20the%20Adobe%20Reader%20plugin%20with%20Firefox#w_installing-and-updating-adobe-reader Installing/Updating Adobe Reader in Firefox]
*'''''Shockwave Flash''''' (Adobe Flash or Flash): [https://support.mozilla.org/en-US/kb/Managing%20the%20Flash%20plugin#w_updating-flash Updating Flash in Firefox]
*'''''Next Generation Java Plug-in for Mozilla browsers''''': [https://support.mozilla.org/en-US/kb/Using%20the%20Java%20plugin%20with%20Firefox#w_installing-or-updating-java Installing or Updating Java in Firefox]

Firefox is slow to shutdown and therefore cannot open again for a few minutes or a restart.This is on 2 different PC's 1 running XP and the other Windows 7.Could you throw some light on this problem Thanks

Firefox is slow to shutdown and therefore cannot open again for a few minutes or a restart.This is on 2 different PC's 1 running XP and the other Windows 7.Could you throw some light on this problem Latest version running Thanks

Please see this article: [[Firefox hangs]]

Firefox 5 window stays on top of other windows

On an old Windows XP SP3 system, in the last few days, Firefox 5 window always stays on top of other windows that I may have open. In order to see the other windows (applications) that I have open, I must minimize Firefox 5. In the past, clicking on the title bar of any other window/application, would bring it to the front, but that does not happen now; clicking on a title bar other than Firefox 5 does focus the other title bar and Firefox 5 title bar does change to the non-focused color, but the other window/application does not come to the front (over Firefox 5).
This has just occurred in the last few days. I have added no new programs and no new extensions to Firefox, but several Firefox add-ons have been updated.
How can I get Firefox 5 to not dominate my desktop?

On an old Windows XP SP3 system, in the last few days, Firefox 5 window always stays on top of other windows that I may have open. In order to see the other windows (applications) that I have open, I must minimize Firefox 5. In the past, clicking on the title bar of any other window/application, would bring it to the front, but that does not happen now; clicking on a title bar other than Firefox 5 does focus the other title bar and Firefox 5 title bar does change to the non-focused color, but the other window/application does not come to the front (over Firefox 5).
This has just occurred in the last few days. I have added no new programs and no new extensions to Firefox, but several Firefox add-ons have been updated.
How can I get Firefox 5 to not dominate my desktop?

When Firefox updates and error message comes up telling me to close other windows of Firefox.

There are no other window of Firefox open. Each time I open Firefox the update starts and then come up with the error. I click on no for the update the next time and the window will open without doing the update.

See:
* [[Software Update Failed]]
* http://kb.mozillazine.org/Software_Update (Software Update not working properly)
Remove the files in the updates and updates\0 folder:
C:\Users\<user>\AppData\Local\Mozilla\Firefox\Mozilla Firefox\updates
(%LOCALAPPDATA%\Mozilla\Firefox\Mozilla Firefox\updates)
* Download a fresh Firefox copy from http://www.mozilla.com/firefox/all.html and save the file to the desktop.
* Uninstall your current Firefox version and remove the Firefox program folder before installing that copy of the Firefox installer.
* Don't remove personal data if you uninstall the current version.
* 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 (not in the Firefox program 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.

Firefox causes other windows to disappear visually

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