I am trying to install ruby on Cygwin using RVM. My system fails when trying to clone a git repository on http. $ git clone http://github.com/developwithpassion/devtools Cloning into 'devtools'... 2 [main] git-remote-http 444 fork: child -1 - forked process 4172 died unexpectedly, retry 0, exit code -1073741515, errno 11 error: cannot fork() for fetch-pack: Resource temporarily unavailable After checking the FAQs I ran rebaseall without any differences. I also rebooted. I actually get a similar problem in make when trying to build ruby with RVM. Basically the make file stoppes at a line similar to this one (simplified): ~/.rvm/src/ruby-1.9.3-p194 $ ./miniruby -e 'IO.foreach("|ls") {|l| puts l}' 1 [main] miniruby 5664 fork: child -1 - forked process 5380 died unexpectedly, retry 0, exit code -1073741515, errno 11 My machine is a newly installed Windows 7 32 bit system. I am willing to investigate this further given any tips on how to proceed. In advance, thanks for any help.