ERROR: While executing gem … (Gem::RemoteSourceException)HTTP Response 302 in ruby update


Unable to use gem update through ISA proxy and getting an  error message ” ERROR:  While executing gem … (Gem::RemoteSourceException)HTTP Response 302″.

Note: The prerequiste of proxy configuration is cntlm tool must be installed for ISA proxy server.


I ended up going through following steps

1. Download zip from
2. Unzip into a temporary directory that I made under InstantRails 2.0 installation
3. From running Instant Rails application opened Ruby Console windows and cd to the unzip directory
4. Manually installed with: $ruby setup.rb
5. Added new remote source with: $gem sources—add




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