I solved it this way (OS: Windows XP SP3):
1. Download CNTLM installer and run it.
2. Find and fill in these fields in cntlm.ini. Do not fill in the
Password field, it's never a good idea to store unencrypted passwords in text files.
Username YOUR_USERNAME Domain YOUR_DOMAIN Proxy YOUR_PROXY_IP:PORT Listen 53128
3. Open console, and type these commands to generate password hashes.
> cd c:\the_install_directory_of_cntlm > cntlm -H Password: ...type proxy password here... PassLM D6888AC8AE0EEE294D954420463215AE PassNT 0E1FAED265D32EBBFB15F410D27994B2 PassNTLMv2 91E810C86B3FD1BD14342F945ED42CD6
4. Copy the above three lines into cntlm.ini, under the
Domain field's line. Once more, do not fill in the
Password field. Save cntlm.ini.
5. Open the Service Manager (from command line: services.msc), and start the service called "CNTLM Authentication Proxy".
6. In the console, type these lines:
> npm config set proxy http://localhost:53128 > npm config set https-proxy http://localhost:53128 > npm config set registry http://registry.npmjs.org
npm install etc. should work. Example:
> npm view qunit ...nice answer, no errors :)