Advice

Specify the NTLM-Proxy server settings
For correct work with NTLM-Proxy server it is necessary to specify its settings in the IDA options (Options -> Proxy settings). Enter proxy-server settings and specify user name and password which you use to log in to Windows or your network user name and password.

Consult your network administrator
Sometimes you will need to consult your network administrator which will give you correct settings for NTLM-Proxy server.