Firefox opens but with a very tiny page at the left upper top of my page, why is this, I deleted and got new Firefox still doing this.
When I open Firefox I get a very tiny screen, help please this is the new edition of Firefox - Quantum Just started to do this yesterday.
Выбранное решение
You can rename/remove xulstore.json and if present delete localstore.rdf in the Firefox profile folder with Firefox closed if it happens again.
You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.
- Help -> Troubleshooting Information -> Profile Directory:
Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder - http://kb.mozillazine.org/Profile_folder_-_Firefox
Note that you should be cautious with using external cleanup software with the Firefox profile folder because it can easily damage file and cause dataloss.
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The Refresh feature (called "Reset" in older Firefox versions) can fix many issues by restoring Firefox to its factory default state while saving your bookmarks, history, passwords, cookies, and other essential information.
Note: When you use this feature, you will lose any extensions, toolbar customizations, and some preferences. See the Refresh Firefox - reset add-ons and settings article for more information.
To Refresh Firefox:
- Open the Troubleshooting Information page using one of these methods:
- Click the menu button
, click help 
and select Troubleshooting Information. A new tab containing your troubleshooting information should open.
- If you're unable to access the Help menu, type about:support in your address bar to bring up the Troubleshooting Information page.
- Click the menu button
- At the top right corner of the page, you should see a button that says "Refresh Firefox" ("Reset Firefox" in older Firefox versions). Click on it.
- Firefox will close. After the refresh process is completed, Firefox will show a window with the information that is imported.
- Click Finish and Firefox will reopen.
Did this fix the problem? Please report back to us!
Thank you.
As it happens I did not need to but did save it just in case. I used my CCleaner and it took care of the problem automatically. I was thrilled. This may help someone else. Thanks again for your prompt reply though. :)
You're very welcome.
Выбранное решение
You can rename/remove xulstore.json and if present delete localstore.rdf in the Firefox profile folder with Firefox closed if it happens again.
You can use the button on the "Help -> Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page.
- Help -> Troubleshooting Information -> Profile Directory:
Windows: Show Folder; Linux: Open Directory; Mac: Show in Finder - http://kb.mozillazine.org/Profile_folder_-_Firefox
Note that you should be cautious with using external cleanup software with the Firefox profile folder because it can easily damage file and cause dataloss.