Access and Authentication - Facebook for Developers
Flush the DNS Cache: In some cases, flushing the DNS cache may help. You can flush the DNS by … Is Facebook down? Problems, Jul 2020 | Product Reviews Jul 19, 2020 Why Facebook Is Banned in China & How to Access It Oct 22, 2019
Feb 12, 2011 · When you visit a page or app on Facebook that requires a regular (http) connection, it switches your entire account connection back to the unsecure (http). If you browse to an app or page that is unsecure, you’ll see the following message. At least Facebook gives you a warning…if you want to visit the page, click Continue.
Jun 23, 2020 Find out why you can't access a website or service on the Feb 08, 2018 Cannot access some websites in Internet Explorer
How to Access Blocked Websites From Overseas
For instructions on how to configure some programs, read Configure firewalls so that Firefox can access the Internet. System time is incorrect. Make sure your system's date, time and timezone settings are configured correctly. Firefox may have issues validating the website's security certificate if the date/time is incorrect. DNS cache Solved: Can't access Facebook and Youtube | Tech Support Guy