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Minimize icon missing? Windows 10.

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My minimize icon is missing. It functions normally when I click where it should be, but the _ is missing.

My minimize icon is missing. It functions normally when I click where it should be, but the _ is missing.
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額外的系統細節

已安裝的外掛程式

  • Shockwave Flash 32.0 r0

應用程式

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:65.0) Gecko/20100101 Firefox/65.0

更多資訊

Wesley Branton
  • Top 25 Contributor
491 個解決方法 4355 個答案

Try Firefox Safe Mode to see if the problem goes away. Firefox Safe Mode is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes).

If Firefox is open, you can restart in Firefox Safe Mode from the Help menu:

  • Click the menu button New Fx Menu , click Help Help-29 and select Restart with Add-ons Disabled.

If Firefox is not running, you can start Firefox in Safe Mode as follows:

  • On Windows: Hold the Shift key when you open the Firefox desktop or Start menu shortcut.
  • On Mac: Hold the option key while starting Firefox.
  • On Linux: Quit Firefox, go to your Terminal and run firefox -safe-mode
    (you may need to specify the Firefox installation path e.g. /usr/lib/firefox)

When the Firefox Safe Mode window appears, select "Start in Safe Mode".

SafeMode-Fx35

If the issue is not present in Firefox Safe Mode, your problem is probably caused by an extension, theme, or hardware acceleration. Please follow the steps in the Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems article to find the cause.

To exit 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 others with the same problem.

'''Try Firefox Safe Mode''' to see if the problem goes away. [[Troubleshoot Firefox issues using Safe Mode|Firefox Safe Mode]] is a troubleshooting mode that temporarily turns off hardware acceleration, resets some settings, and disables add-ons (extensions and themes). '''If Firefox is open,''' you can restart in Firefox Safe Mode from the Help menu: * Click the menu button [[Image:New Fx Menu]], click Help [[Image:Help-29]] and select ''Restart with Add-ons Disabled''. '''If Firefox is not running,''' you can start Firefox in Safe Mode as follows: * On Windows: Hold the '''Shift''' key when you open the Firefox desktop or Start menu shortcut. * On Mac: Hold the '''option''' key while starting Firefox. * On Linux: Quit Firefox, go to your Terminal and run ''firefox -safe-mode'' <br>(you may need to specify the Firefox installation path e.g. /usr/lib/firefox) When the Firefox Safe Mode window appears, select "Start in Safe Mode". ;[[Image:SafeMode-Fx35]] '''''If the issue is not present in Firefox Safe Mode''''', your problem is probably caused by an extension, theme, or hardware acceleration. Please follow the steps in the [[Troubleshoot extensions, themes and hardware acceleration issues to solve common Firefox problems]] article to find the cause. ''To exit 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 others with the same problem.
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提出問題者

Hi Wesley,

The issue still occurs in Safe Mode.

Hi Wesley, The issue still occurs in Safe Mode.
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cor-el
  • Top 10 Contributor
  • Moderator
16999 個解決方法 153491 個答案

Make sure you run Firefox in desktop mode and not in tablet mode.

Make sure you run Firefox in desktop mode and not in tablet mode. *https://www.top-password.com/blog/windows-10-switch-between-tablet-mode-and-desktop-mode/
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提出問題者

Hi Cor-el,

That toggle is greyed out for me, as I am on a desktop already, without a touchscreen.

Thanks

Hi Cor-el, That toggle is greyed out for me, as I am on a desktop already, without a touchscreen. Thanks
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Wesley Branton
  • Top 25 Contributor
491 個解決方法 4355 個答案

Go to your Firefox profile folder. If you see a chrome folder, check to see if there is a userChrome.css file in that folder.

Check for the same thing in your Firefox installation folder.

Go to [[Profiles - Where Firefox stores your bookmarks, passwords and other user data|your Firefox profile folder]]. If you see a <code>chrome</code> folder, check to see if there is a <code>userChrome.css</code> file in that folder. Check for the same thing in your Firefox installation folder.
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cor-el
  • Top 10 Contributor
  • Moderator
16999 個解決方法 153491 個答案

Try a different Windows theme or experiment with its settings to see if can find one that works.

Try a different Windows theme or experiment with its settings to see if can find one that works.
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提出問題者

Wesley, I did not see a userChrome.css file, or chrome folder, in the profile folder nor in the installation folder.

Cor-el, I tried both the "Window" and "Windows 10" themes that come pre-packaged with Windows 10, the icon is still missing.

Thanks.

Wesley, I did not see a userChrome.css file, or chrome folder, in the profile folder nor in the installation folder. Cor-el, I tried both the "Window" and "Windows 10" themes that come pre-packaged with Windows 10, the icon is still missing. Thanks.
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Wesley Branton
  • Top 25 Contributor
491 個解決方法 4355 個答案

Certain Firefox problems can be solved by performing a Clean reinstall. This means you remove your Firefox program files and then reinstall Firefox. This process does not remove your Firefox profile data (such as bookmarks and passwords), since that information is stored in a different location.

To do a clean reinstall of Firefox, please follow these steps: Note: You might want to print these steps or view them in another browser.

  1. Download the latest Desktop version of Firefox from mozilla.org (or choose the download for your operating system and language from this page) and save the setup file to your computer.
  2. After the download finishes, close all Firefox windows (or open the Firefox menu New Fx Menu and click the close button Close 29 ).
  3. Delete the Firefox installation folder, which is located in one of these locations, by default:
    • Windows: (Note: Check both folders.)
      • C:\Program Files\Mozilla Firefox
      • C:\Program Files (x86)\Mozilla Firefox
    • Mac: Delete Firefox from the Applications folder.
    • Linux: If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see Install Firefox on Linux. If you downloaded and installed the binary package from the Firefox download page, simply remove the folder firefox in your home directory.
  4. Now, go ahead and reinstall Firefox:
    1. Double-click the downloaded installation file and go through the steps of the installation wizard.
    2. Once the wizard is finished, choose to directly open Firefox after clicking the Finish button.

More information about reinstalling Firefox can be found here.

WARNING: Do not use a third party uninstaller as part of this process. Doing so could permanently delete your Firefox profile data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. These cannot be easily recovered unless they have been backed up to an external device! See Back up and restore information in Firefox profiles.

Please report back to say if this helped you!

Certain Firefox problems can be solved by performing a ''Clean reinstall''. This means you remove your Firefox program files and then reinstall Firefox. This process does not remove your [[Profiles - Where Firefox stores your bookmarks, passwords and other user data|Firefox profile]] data (such as bookmarks and passwords), since that information is stored in a different location. To do a clean reinstall of Firefox, please follow these steps: '''Note:''' You might want to print these steps or view them in another browser. #Download the latest Desktop version of Firefox from [https://www.mozilla.org mozilla.org] (or choose the download for your operating system and language from [https://www.mozilla.org/firefox/all/ this page]) and save the setup file to your computer. #After the download finishes, close all Firefox windows (or open the Firefox menu [[Image:New Fx Menu]] and click the close button [[Image:Close 29]]). #Delete the Firefox installation folder, which is located in one of these locations, by default: #*'''Windows:''' (Note: Check both folders.) #**C:\Program Files\Mozilla Firefox #**C:\Program Files (x86)\Mozilla Firefox #*'''Mac:''' Delete Firefox from the Applications folder. #*'''Linux:''' If you installed Firefox with the distro-based package manager, you should use the same way to uninstall it - see [[Installing Firefox on Linux]]. If you downloaded and installed the binary package from the [http://www.mozilla.org/firefox#desktop Firefox download page], simply remove the folder ''firefox'' in your home directory. #Now, go ahead and reinstall Firefox: ##Double-click the downloaded installation file and go through the steps of the installation wizard. ##Once the wizard is finished, choose to directly open Firefox after clicking the Finish button. More information about reinstalling Firefox can be found [[Troubleshoot and diagnose Firefox problems#w_4-reinstall-firefox|here]]. <b>WARNING:</b> Do not use a third party uninstaller as part of this process. Doing so could permanently delete your [[Profiles|Firefox profile]] data, including but not limited to, extensions, cache, cookies, bookmarks, personal settings and saved passwords. <u>These cannot be easily recovered unless they have been backed up to an external device!</u> See [[Back up and restore information in Firefox profiles]]. <!-- Starting in Firefox 31, the Firefox uninstaller no longer lets you remove user profile data.Ref: Bug 432017 and https://support.mozilla.org/kb/uninstall-firefox-from-your-computer/discuss/5279 [Fx31] Windows uninstaller will no longer offer the option to remove personal data --> Please report back to say if this helped you!
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提出問題者

Hi Wesley,

I just tried the reinstall, deleted from both Program Files and Program Files (x86). Reinstalled using the installer that I just downloaded. The icon is still missing.

Thanks.

Hi Wesley, I just tried the reinstall, deleted from both Program Files and Program Files (x86). Reinstalled using the installer that I just downloaded. The icon is still missing. Thanks.
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cor-el
  • Top 10 Contributor
  • Moderator
16999 個解決方法 153491 個答案

Try a different builtin Firefox theme or lightweight theme from the customize page.

Try a different builtin Firefox theme or lightweight theme from the customize page.
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提出問題者

cor-el said

Try a different builtin Firefox theme or lightweight theme from the customize page.

Interesting, this seems to work for some themes, but the 3 themes that come with Firefox: Default, Dark, and Light, don't work. There are also others on the add-ons page that do and don't work. For example: https://addons.mozilla.org/en-US/firefox/addon/pastel-gradient/ does work, however, https://addons.mozilla.org/en-US/firefox/addon/arc-dark-theme-we/?src=search does not.

Again, the default themes also do not work.

Thanks

''cor-el [[#answer-1207984|said]]'' <blockquote> Try a different builtin Firefox theme or lightweight theme from the customize page. </blockquote> Interesting, this seems to work for some themes, but the 3 themes that come with Firefox: Default, Dark, and Light, don't work. There are also others on the add-ons page that do and don't work. For example: https://addons.mozilla.org/en-US/firefox/addon/pastel-gradient/ does work, however, https://addons.mozilla.org/en-US/firefox/addon/arc-dark-theme-we/?src=search does not. Again, the default themes also do not work. Thanks

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