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Click the menu button and select Options Preferences. In the Menu bar at the top of the screen, click Firefox and select Preferences. To check your connection settings in Firefox:
#This webpage is not available mac
See Enter proxy server settings on Mac at Apple Support for more information on proxy settings. If you connect to the Internet through a proxy, compare Firefox's settings to Internet Explorer's - see Microsoft's guide to proxy settings.
#This webpage is not available how to
![this webpage is not available this webpage is not available](https://forums-images.oneplus.net/attachments/538/538774-983eb3888a6cf4d63a4ce50cf930e845.png)
If you don't see any of the error messages above, check to see if any of the specific problems below match what you see: The website loads but doesn't work properly With big sites like Twitter or Facebook this may only be a few minutes. In that case you'll just have to wait for it to get fixed. If clearing Firefox's cookies and cache didn't work, it's probably a sign that there is a problem with the website itself. Make sure other items you want to keep are not selected.