I am using the latest version of Tor, and I can't seem to connect to the obfs4 bridge that comes with the bundle anymore. Only obfs3 works but it is too slow! I tried grabbing alternate bridges from bridges.torproject.org and none of them would work. Reinstalling the program did not fix the problem, and neither did running as administrator. Please help, I live in the United States. The wifi hotspot I use blocks tor connections so I have to use bridges. Obfs4 used to work last month and now it doesn't. I am using Windows 10.
Try using other pluggable transports such as:
If no one works then try to use IPv6 normal bridges (which you can get at bridges.torproject.org).
I just had to download the new update that came out recently today and it fixed the problem for me. I am able to use obfs4 now. I appreciate those who tried to help!