page loads to small ICON above tol bar but won't open to full sixe page
Page opens to small window above toolbar but won't expand to full size page
Page opens to small window above toolbar but won't expand to full size page
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Can you open its system menu via Alt+Space and resize the window via that menu ?
You can try to go to full screen via F12 to have at least a browser window. You can try to rename/remove xulstore.json in the Firefox profile folder with Firefox closed.
You can use the button on the "Help -> More Troubleshooting Information" (about:support) page to go to the current Firefox profile folder or use the about:profiles page (Root directory).
- Help -> More Troubleshooting Information -> Profile Folder/Directory:
Windows: Open Folder; Linux: Open Directory; Mac: Show in Finder - https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data
- C:\Users\<user>\AppData\Roaming\Mozilla\Firefox\Profiles\<profile>