Windows 7 64-bit: Could not find a valid gem 'compass' (>= 0), here is why: Unable to download data from https://rubygems.org/

问题

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>

回答1:

Try upgrading your SSL certificates.

Download http://curl.haxx.se/ca/cacert.pem
Save this file anywhere you want, such as:
```
C:\cacert.pem
```
On the command line, tell Ruby where to find the cert file, such as:
```
set SSL_CERT_FILE=C:\cacert.pem
```
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

回答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.

link for windows

回答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. :)

回答4:

My solution was this: I uninstalled my current ruby installation which is for x64 system and replaced it with ruby x86/32bit installer and followed the steps given by @joelparkerhenderson.

Though I have x64 system, this is the only solution that worked for me.

来源：https://stackoverflow.com/questions/27435841/windows-7-64-bit-could-not-find-a-valid-gem-compass-0-here-is-why-unab

标签

ruby-on-rails

ruby

windows

windows-7

compass