LoadError: cannot load such file — bcrypt_ext on Windows 2008 x64 server

Question

I upgraded my environment from Ruby 2.0.0 to 2.2.3.

I also upgraded (overwrite) DevKit, and re-run ruby dk.rb install.

I removed Gemfile.lock and ran bundle

Answer 1

I had the same problem:

cannot load such file — bcrypt_ext

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Windows 8.1 64bit

ruby 2.3.3p222 (2016-11-21 revision 56859) [i386-mingw32]

Rails 5.1.4

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My solution:

1. gem uninstall bcrypt-ruby
2. gem uninstall bcrypt
3. gem install bcrypt –platform=ruby
4. added this whole line to Gemfile:

gem 'bcrypt', git: 'https://github.com/codahale/bcrypt-ruby.git', :require => 'bcrypt'

5. bundle install

Answer 2

@user1185081 's solution worked for me in a windows machine. I ran following commands and worked like magic:

$ cd C:\RailsInstaller\Ruby2.2.0\lib\ruby\gems\2.2.0\gems\bcrypt-3.1.10-x86-mingw32\ext\mri  
$ ruby extconf.rb
$ C:\<DevKit Path>\devkitvars.bat  (assuming you have devkit installed)(Ran this instead of running "make" because it was not recognized as an internal or external command)
$ make install

Answer 3

This process is for windows:

The problem is with the programs installed on the system.

Uninstall all rails programs:

1. All Ruby programs.

2. RailsInstaller.

Removes all files that have been able to uninstall, you have to do it manually inside:

C:\RailsInstaller

3. Install de ruby version 2.2 from:

http://railsinstaller.org/en

Wait a moment and it's already to go.

MarlonJon.es

Answer 4

I spent an entire hour fixing this, just now.

Well what I did was I followed some advice online to do a

gem install bcrypt --platform=ruby

And then, it worked in irb.

irb(main):001:0> require 'bcrypt'
=> true

Later when I had to do a bundle install, for some odd reason rails installed another bcrypt and the error was back. So I had two folders in my gem root.

bcrypt-3.1.10
bcrypt-3.1.10-x64-mingw32

So, since the first folder was the one that got built with the devkit, and it works. I deleted the contents of the second folder and copied the contents of the first into it.

Seems to be working as I'm writing this.

Answer 5

In my case, a designating of the old version to bcrypt in Gemfile was a cause of the error. I removed a designating of the version and run bundle update bcrypt, then it was settled.

Answer 6

Here is the solution worked for me:

    C:\> gem uninstall brcypt
    C:\> gem install --no-ri --no-rdoc bcrypt
    C:\> cd (path to gems root)\bcrypt-3.1.7-x86-mingw32\ext\mri
    C:\(path to gems root)\bcrypt-3.1.7-x86-mingw32\ext\mri> ruby extconf.rb
    C:\(path to gems root)\bcrypt-3.1.7-x86-mingw32\ext\mri> make
    C:\(path to gems root)\bcrypt-3.1.7-x86-mingw32\ext\mri> make install