This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Əgər kömək lazımdırsa lütfən yeni sual verin.

Firefox shows as open on the task bar with a small screen but will not expand or display full screen.

  • 1 cavab
  • 6 have this problem
  • 19 views
  • Last reply by FredMcD

someonesmother
someonesmother
more options

I open Firefox and it shows as open on the task bar. I hover off the icon and it shows the Firefox screen but will not expand past that. I've uninstalled it and reinstalled it and updated it to no avail. I cannot open it in any screen except when I hold my mouse over it.

I open Firefox and it shows as open on the task bar. I hover off the icon and it shows the Firefox screen but will not expand past that. I've uninstalled it and reinstalled it and updated it to no avail. I cannot open it in any screen except when I hold my mouse over it.

Chosen solution

https://support.mozilla.org/en-US/kb/changes-toolbars-and-window-sizes-are-not-saved You may have corrupt xulstore.json or Localstore.rdf file.

Close Firefox. Open your file browser to this hidden location:

  • Mac: *~/Library/Application Support/Firefox/Profiles
  • Linux: *~/.mozilla/firefox/Profiles
  • Windows: %AppData%\Mozilla\Firefox\Profiles
  • *C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles

Search for the above files. Then rename or delete them. Restart Firefox.

Read this answer in context 👍 2

All Replies (1)

FredMcD
FredMcD
more options

Seçilmiş Həll

https://support.mozilla.org/en-US/kb/changes-toolbars-and-window-sizes-are-not-saved You may have corrupt xulstore.json or Localstore.rdf file.

Close Firefox. Open your file browser to this hidden location:

  • Mac: *~/Library/Application Support/Firefox/Profiles
  • Linux: *~/.mozilla/firefox/Profiles
  • Windows: %AppData%\Mozilla\Firefox\Profiles
  • *C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles

Search for the above files. Then rename or delete them. Restart Firefox.