Pip can't confirm SSL certificate

Question

I am having trouble installing paramiko on one system. This same command worked earlier, but then something changed and I had reinstall Python, and now paramiko will not install. I am using Windows 7 with Python 3.6.4. Pip returns the following error:

C:\Users\me>pip --trusted-host pypi.python.org install paramiko
Collecting paramiko
  Could not fetch URL https://pypi.python.org/simple/paramiko/: There was a problem confirming the ssl certificate: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:777) - skipping
  Could not find a version that satisfies the requirement paramiko (from versions: )
No matching distribution found for paramiko

How can I fix this?

Solution 1

According to Paramiko installation documentation :

Versions supported :

• Python 2.7
• Python 3.4+

Looks like you are using incompatible version of Python

C:\Users\User>python -V
Python 3.6.4

Installation

pip3 install paramiko 

or

pip install paramiko

SSL: CERTIFICATE_VERIFY_FAILED can be caused by pip issue or python issue on Mac

Please upgrade pip to latest version for the same.

pip install --upgrade pip

After this issue should be resolved

Or try installing incremental

pip install incremental

Solution 2

Using following commands helped me. please try this

1. For upgrading pip

python -m pip install --trusted-host pypi.python.org --trusted-host files.pythonhosted.org --trusted-host pypi.org --upgrade pip

2. For installing new packages, eg numpy, pandas etc.

python -m pip install PACKAGE NAME --trusted-host pypi.python.org --trusted-host files.pythonhosted.org --trusted-host pypi.org

Comments

[stesteve]

I am using Python 3.6.4

[phd]

Python 3.6 is surely above 3.4.

[Morse]

use pip3 install paramiko not pip --trusted-host pypi.python.org install paramiko

[Morse]

Great! That's because may be you have both python 2 and python 3 installed. Using pip3 will point it to python 3 interpreter.

[R Claven]

OMG - sooo many other answers in this area did not work but this did!!!

[Admin]

Nice to hear that!

[Yunzhao Xing]

Yours is the only one answer works for me. Thanks so much. BTW, do you know how to add those trust link permanently? It used to work well until today...

[Yunzhao Xing]

Oh, I just found the way to add those sites permanently, <code> python -m pip config set global.trusted-host "pypi.org files.pythonhosted.org pypi.python.org" </code>