Windows 7 64-bit: Could not find a valid gem 'compass' (>= 0), here is why: Unable to download data from https://rubygems.org/
Solution 1
Try upgrading your SSL certificates.
Download http://curl.haxx.se/ca/cacert.pem
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Save this file anywhere you want, such as:
C:\cacert.pem
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On the command line, tell Ruby where to find the cert file, such as:
set SSL_CERT_FILE=C:\cacert.pem
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Try again.
gem install compass
If it works, you can make the cert file permanent by adding it in your control panel.
Credit and more info: https://gist.github.com/fnichol/867550
Solution 2
Just an additional option for lazy people who don't want to deal with the SSL certificates, you can just uninstall and re-install the latest ruby environment. I used to have 1.8 something and reinstalling to 2.2.1 did the trick.
Solution 3
If there are still guys like me that can't find solution in any of the comments before mine, here's how I found my working way:
I went to rubygems.org/pages/download and downloaded zipped file. Then I unpacked it somewhere on my C: partition and opened it once I unpacked it. Find a file "setup.rb" and double click on it, it will install something, I don't remember. I guess ruby gems. Then close everything, go again and open cmd on windows and try typing "gem install sass". It worked for me. Sass installed. :)
Hope I will help someone, because I lost my mind looking for solution to this problem whole day today. :)
Comments
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test almost 2 years
I cannot install compass. I want to install compass on my project so when I try to update, I get this:
c:\wamp\www\danjasnowski.com>gem install compass ERROR: Could not find a valid gem 'compass' (>= 0), here is why: Unable to download data from https://rubygems.org/ - SSL_connect returned=1 errno=0 state=SSLv3 read server certificate B: certificate verify failed (https://api.rubygems.org/specs.4.8.gz)
Also.. my current version.
c:\wamp\www\danjasnowski.com>gem --version
2.4.1
and
irb(main):001:0> RUBY_VERSION
=> "2.0.0"
irb(main):002:0> RUBY_RELEASE_DATE
=> "2014-05-08"
irb(main):003:0> RUBY_PLATFORM
=> "x64-mingw32"
irb(main):004:0> RUBY_PATCHLEVEL
=> 481
irb(main):005:0>