# Rake task rails:upgrade:check is not working on windows. Rai **URL:** \ **Category:** Rails\ **Created:** [September 3, 2010, 9:55pm UTC](https://www.ruby-forum.com/t/rake-task-railscheck-is-not-working-on-windows-rai/194406 "2010-09-03T21:55:00Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![krunal\_shah](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/f07891/32.png) [@krunal\_shah](https://www.ruby-forum.com/u/krunal_shah)\ **Post date:** [September 3, 2010, 9:55pm UTC](https://www.ruby-forum.com/t/rake-task-railscheck-is-not-working-on-windows-rai/194406/1 "2010-09-03T21:55:00Z")
Is there any solution to solve the problem of rake task rails:upgrade:check on windows ? I am getting this error … Rake task fetching failed with (working directory: C:\projects\testproject) rake aborted! no such file to load – popen4 C:ruby/lib/ruby/gems/1.8/gems/rake-0.8.7/lib/rake.rb:2383:in ‘raw\_load\_rakefile’ (See full trace by running task with --trace) EDIT: To solve out this problem i have installed this gems … gem install POpen4 -v 0.1.4 gem install win32-open3 gem install rak But still not able to get proper output … Is there any solution to run rake task rails:upgradeLcheck on windows ?? Is it causing problem with rak or popen4 ?? ---
**Author:** ![krunal\_shah](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/f07891/32.png) [@krunal\_shah](https://www.ruby-forum.com/u/krunal_shah)\ **Post date:** [September 4, 2010, 12:28am UTC](https://www.ruby-forum.com/t/rake-task-railscheck-is-not-working-on-windows-rai/194406/2 "2010-09-04T00:28:45Z")
So your running this? [GitHub - rails/rails\_upgrade: Plugin to run checks on your Rails 2.x/3.x to check for obvious upgrade points on the path to 3.0](http://github.com/rails/rails_upgrade) and after you installed those missing gems running “rake rails:upgrade:check” worked just fine?