How can I remove a URL channel from Anaconda?
<p>Recently I needed to install PyPdf2 to one of my programs using Anaconda. Unfortunately, I failed, but the URLs that was added to Anaconda environment prohibit the updates of all the Conda libraries.
Every time I tried to update anaconda it gives the following </p>

<pre><code>conda update conda
Using Anaconda Cloud api site https://api.anaconda.org
Fetching package metadata ..........Error: Invalid index file: https://pypi.python.org/pypi/PyPDF2/1.26.0/win-64/repodata.json: No JSON object could be decoded
</code></pre>

<p>I typed the command <strong>conda info</strong> to see what causes the error, I found lots of URLs that points to PyPdf2!</p>

<p>Simply, I want to remove all these URLS from anaconda's channel URLs, How can I do it? No matter manually or automatic.</p>

<p>Note: I have uninstalled Anaconda, and reinstall, but no luck!</p>

<pre><code>C:\WINDOWS\system32&gt;conda info
Using Anaconda Cloud api site https://api.anaconda.org
Current conda install:

             platform : win-64
        conda version : 4.1.6
    conda-env version : 2.5.1
  conda-build version : 1.21.3
       python version : 2.7.12.final.0
     requests version : 2.10.0
     root environment : C:\Anaconda2  (writable)
  default environment : C:\Anaconda2
     envs directories : C:\Anaconda2\envs
        package cache : C:\Anaconda2\pkgs
         channel URLs : https://pypi.python.org/pypi/PyPDF2/1.26.0/win-64/
                        https://pypi.python.org/pypi/PyPDF2/1.26.0/noarch/
                        https://conda.anaconda.org/C:\Python27\Lib\site-packages\PyPDF2/win-64/
                        https://conda.anaconda.org/C:\Python27\Lib\site-packages\PyPDF2/noarch/
                        https://conda.anaconda.org/X:\Downloads\Compressed\PyPDF2-master\/win-64/
                        https://conda.anaconda.org/X:\Downloads\Compressed\PyPDF2-master\/noarch/
                        https://github.com/mstamy2/PyPDF2/zipball/master/win-64/
                        https://github.com/mstamy2/PyPDF2/zipball/master/noarch/
                        https://pypi.python.org/pypi/PyPDF2/win-64/
                        https://pypi.python.org/pypi/PyPDF2/noarch/
                        https://pythonhosted.org/PyPDF2/win-64/
                        https://pythonhosted.org/PyPDF2/noarch/
                        https://github.com/mstamy2/PyPDF2/win-64/
                        https://github.com/mstamy2/PyPDF2/noarch/
                        https://repo.continuum.io/pkgs/free/win-64/
                        https://repo.continuum.io/pkgs/free/noarch/
                        https://repo.continuum.io/pkgs/pro/win-64/
                        https://repo.continuum.io/pkgs/pro/noarch/
          config file : C:\Users\Dr. Mohammad Elnesr\.condarc
         offline mode : False
    is foreign system : False
</code></pre>

<p>Fortunately, I found the answer (Thanks to @cel as well).</p>

<p>I navigated to <code>C:\Users\{MyUserName}\</code> Then I found a file with no name but has a strange extension (<code>.condarc</code>) I opened it with Notepad++, I found the files as below></p>

<p><a href="http://i.stack.imgur.com/dPbWh.png" rel="nofollow"><img src="http://i.stack.imgur.com/dPbWh.png" alt="enter image description here"></a></p>

<p>Then I deleted all lines except the last one, saved the file, then I ran the command <code>conda update conda</code>, and it works without errors.</p>

python anaconda channel pypdf2