Using conda on Windows XP with or without a proxy¶
Although Windows XP mainstream support and Extended Support from Microsoft have ended, and Windows XP is no longer one of the target systems supported by Anaconda, some users have had success using Anaconda on Windows XP with the methods described on this page.
Anaconda 2.3.0 is the last version of Python 3-based Anaconda to support Windows XP. Anaconda 2.4 and later have a version of Python 3 built with Visual Studio 2015, which by default does not support Windows XP.
You can install Anaconda 2.3.0 and then update it with
conda update conda and
conda update --all. Download
https://repo.anaconda.com/archive/. Install it in any location,
Using a proxy with Windows XP¶
To configure conda for use behind a corporate proxy that uses proxy auto-config (PAC) files and SSL certificates for secure connections:
Find a proxy server address from the PAC file:
Open Internet Explorer.
From the Tools menu, select Internet Options, and then click the Connections tab.
On the Connections tab, click the LAN Settings button.
In the LAN Settings dialog box, copy the address under the Use automatic configuration script checkbox.
Click the Cancel button to close the LAN settings.
Click the Cancel button to close the Internet Options.
Paste the address into the Internet Explorer address bar, then press the Enter key.
In the PAC file that opens, search for
returnuntil you find what looks like a proxy IP or DNS address with the port number, which may take some time in a long file.
Copy the address and port number.
Follow the .condarc instructions to create a file named
.condarcin your home directory or the installation directory, such as
Follow the .condarc proxy server instructions to add proxy information to the
If you decide to include any passwords, be aware of transformations that can affect special characters.
EXAMPLE: This example shows proxy information with passwords:
proxy_servers: http: http://user:firstname.lastname@example.org:8080 https: https://user:email@example.com:8080 ssl_verify: False
If you include proxy information without passwords, you will be asked to answer authentication prompts at the command line.
EXAMPLE: This example shows proxy information without passwords:
proxy_servers: http: http://corp.com:8080 https: https://corp.com:8080 ssl_verify: False
Once the proxy is configured, you can run
conda update conda
and then create and manage environments with the Anaconda
Some packages such as
flask-login may not be available
through conda, so you may need to use pip to install them:
To use pip securely over https:
pip install --trusted-host pypi.python.org package-name
If the secure https proxy fails, you can force pip to use an insecure http proxy instead:
pip install --index-url=http://pypi.python.org/simple/ --trusted-host pypi.python.org package-name