This question already has an answer here:

How can I use Tor from networks whose operators attempt to block Tor use?

For example, I previously used Tor from my school's network to avoid restriction of my Web browsing based on keywords, but now attempts to use Tor on their wireless network are blocked and result in presentation the message "TOR/ULTRASURF DETECTED" being shown to me when I switch to use of a browser without Tor.

merged by Jens Kubieziel May 9 '17 at 11:56

This question was merged with Can't connect Tor Network, failed to establish network because it is an exact duplicate of that question.