Many site issues can be caused by corrupt cookies or cache. In order to try to fix these problems, the first step is to clear both cookies and the cache. Note: This will temporarily log you out of all sites you're logged in to. To clear cache and cookies do the following:

1. Click the menu button , choose History, and then "Clear Recent History...".
2. Under "Time range to clear", select "Everything".
3. Now, click the arrow next to Details to toggle the Details list active.
4. From the details list, check Cache and Cookies and uncheck everything else.
5. Now click the "Clear Now" button.

Further information can be found in the Delete browsing, search and download history on Firefox article.

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{ Ctrl + P } will initiate printing when the Print button is hidden.

You can also find the Print item in the File menu if you can't find the Print Preview button in the "3-bar" Firefox menu button drop-down list. You can tap the Alt key or press F10 to show the Menu Bar.

See also:

• Universal Print: https://addons.mozilla.org/firefox/addon/universal-print/

In what way did your friend sign in? Is this a problem with the Windows user account or with Firefox?

You can remove the cookies from a website to make a website forget about you. "Remove the cookies" from websites that cause problems.

• Firefox/Tools > Options > Privacy > "Use custom settings for history" > Cookies: "Show Cookies"

Use these steps to remove saved (form) data from a drop-down list:

1. click the (empty) input field on the web page to open the drop-down list
2. highlight an entry in the drop-down list with the mouse or cursor Down key
   do not click the mouse or press the Enter key
3. press the Delete key (on Mac: Shift+Delete) to delete the highlighted entry