Hi, This is a very painfull and weird failed error of Windows antivirus. I apologize for not having realized before.
For other people who may encounter this difficult problem, the key to find this error is (cut connections only for sites that use Letsencrypt certificates), is the strace /usr/bin/curl https://curl.se/ Here, the following line is the key: --- Process 3100 thread 3124 created 1668 16622 [sig] curl (3100) SetThreadName: SetThreadDescription() failed. 00000000 10000000 This indicate the drop connection. I'm talking to the antivirus people to solve this bug, I don't want to indicate the brand of the antivirus. Many thanks to Brian for you help. Cesar Jorge -- Problem reports: https://cygwin.com/problems.html FAQ: https://cygwin.com/faq/ Documentation: https://cygwin.com/docs.html Unsubscribe info: https://cygwin.com/ml/#unsubscribe-simple