Hadoop startup error in Windows

I have been familiar with hadoop for a long time. I used to get it from virtual machine Linux, but recently my computer is too stuck, so I had to use cygwin to simulate the Linux environment in Windows to learn hadoop. Setting up a hadoop environment in Windows is prone to errors. In the past, due to space in the path, it took a long time to solve the problem. The following error occurs when hadoop is started today:
Localhost:/usr/bin/ssh.exe: Error while loading shared libraries: cygz. dll: cannot open shared object file: no such file or directory
Solution: Download cygz. dll and register it at http://download.csdn.net/detail/you12345678901234567/5705283.

2. at startup, localhost: SSH: connect to host localhost port 22: Connection refused appears. It turns out that the sshd service is not enabled, start the cygwin sshd service in computer -- manage -- service and application -- service.
It seems that the learning is continuous. Otherwise, I will soon forget what I have learned before and start the Big Data Processing learning journey again...