Direct access to the Tor network may sometimes be blocked by your Internet Service Provider or by a government. Tor Browser includes some circumvention tools for getting around these blocks. These tools are called “pluggable transports”. See the Pluggable Transports page for more information on the types of transport that are currently available.
To use pluggable transports, click "Configure" in the Tor Launcher window that appears when you first run Tor Browser.
You can also configure pluggable transports while Tor Browser is running, by clicking on the Torbutton menu and selecting “Tor Network Settings”.
Select “yes” when asked if your Internet Service Provider blocks connections to the Tor network.
Select “Connect with provided bridges”. Tor Browser currently has nine pluggable transport options to choose from. If one fails to get you online, try selecting a different transport.
If you try all of these options, and none of them gets you online, you will need to enter bridge addresses manually. Read the Bridges section to learn what bridges are and how to obtain them.