Python-PIP 安装故障排除-PermisonError: [ WinError 5]访问被拒绝

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E: Since this answer seems to have gained some popularity, I will add: doing things globally is most of the time not a great idea. Almost always the correct answer is: use a project environment where you're not installing things globally, e.g. with virtualenv.

For those that may run into the same issue:

Run the command prompt as administrator. Having administrator permissions in the account is not always enough. In Windows, things can be run as administrator by right-clicking the executable and selecting "Run as Administrator". So, type "cmd" to the Start menu, right click cmd.exe, and run it as administrator.

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Do not use the command prompt in the IDE. Run the command prompt from windows as an administrator. I'm sure this will solve the problem. If not, uninstall pip and reinstall the latest one directly.

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As of upgrading from pip 7.x.x to 8.x.x on Python 3.4 (for *.whl support).

Wrong command: pip install --upgrade pip (can't move pip.exe to temporary folder, permisson denied)

OK variant: py -3.4 -m pip install --upgrade pip (do not execute pip.exe)

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I have had the same problem with anaconda on windows. It seems that there is an issu with mcAfee antivirus. If you deactivate it while running the updates or the installs, it allows you to properly run the installation.

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I know my answer would be weird but that's what I have experienced just now.

I got the similar error when installing tensorflow package and I tried the same by opening powershell in windows as administrator but in vain.

Later I found out that I was already using numpy in one of the python scripts in an active python session. So I closed the Spyder IDE and tried to install the tensorflow package by running powershell as administrator and it worked.

Hope this will help somebody else like me who will open this older but useful post in upcoming days

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Still relevant in 2018: don't install packages as admin.

The by far more sensible solution is to use virtualenv to create a virtual environment directory (virtualenv dirname) and then activate that virtual environment with dirname\Script\Activate in Windows before running any pip commands. Or use pipenv to manage the installs for you.

That way, everything gets written to dirs that you have full write permission for, without needing UAC, and without global installs for local directories.

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For those who run into this issue and running the command prompt as administrator does not work this worked for me:

Since I had already tried a first time without running the cmd prompt as admin, in my c:\Users\"USER"\AppData\Local\Temp folder I found it was trying to run files from the same pip-u2e7e0ad-uninstall folder. Deleting this folder from the Temp folder and retrying the installation fixed the issue for me.

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After seeing

You are using pip version 9.0.1, however version 10.0.1 is available.
You should consider upgrading via the 'python -m pip install --upgrade pip' command.

I ran

pip install -U pip

and hit this error

PermissionError: [WinError 5]

I tried again and got

pip install -U pip
ERROR: To modify pip, please run the following command:
c:\python36-32\python.exe -m pip install -U pip

After running that exact command, it worked.

For those promoting the use of virtual environments as a solution to this error, pip and virtualenv must be updated in your main install. Simply put, a virtual environment offers no solution to this problem.

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Just reinstall Python in another folder, e.g. c:\python. After that you won't be bothered by pip wanted administrator privileges.

Windows 10 Pro x64 user.

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Even you run from Administrator, it may not solve the issue if the pip is installed inside another userspace. This is because Administrator doesn't own another's userspace directory, thus he can't see (go inside) the inside of the directory that is owned by somebody. Below is an exact solution.

python -m pip install -U pip --user //In Windows

Note: You should provide --user option

pip install -U pip --user //Linux, and MacOS

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Note that if you are installing this through Anaconda, you will need to open Anaconda as an administrator and then launch the command prompt from there.

Otherwise, you can also run "Anaconda prompt" directly as an administrator to uninstall and install packages.

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I ran into this issue when I was using pycharm to create and run a virtual environment - I clicked the "inherit global site packages" checkbox - deleting and recreating the venv solved the issue for me. If you used another means for creating your venv, make sure it IS NOT INHERITING global packages!

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TL;DR: python -m pip install -U pip, then try again.

I was already using a venv (virtualenv) in PyCharm.

Creating it I clicked inherit global site packages checkbox, to allow packages installed via an installer to work. Now inside my venv there was no pip installed, so it would use the inherited global pip.

Here is how the error went:

(venv) D:\path\to\my\project> pip install certifi  # or any other package

Would fail with

PermissionError: [WinError 5] Access denied: 'c:\\program files\\python36\\Lib\\site-packages\\certifi'

Notice how that is the path of the system python, not the venv one. However we want it to execute in the right environment.

Here some more digging:

(venv) D:\path\to\my\project> which pip
/c/Program Files/Python36/Scripts/pip


(venv) D:\path\to\my\project> which python
/d/path/to/my/project/venv/Scripts/python

So python is using the correct path, but pip is not? Let's install pip here in the correct one as well:

(venv) D:\path\to\my\project> python -m pip install -U pip
... does stuff ...
Successfully installed pip

Now that's better. Running the original failing command again now works, as it is using the correct pip.

(venv) D:\path\to\my\project> pip install certifi  # or any other package
... install noise ...
Successfully installed certifi-2019.9.11 chardet-3.0.4 idna-2.8 requests-2.22.0 urllib3-1.25.7

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I have the same error. Not sure why it happened. But I managed to upgrade by running:

pip install setuptools --upgrade --ignore-installed

After that, I used a PowerShell or Command Prompt - cmd in administrator mode to install the package:

pip install the-package


# or
easy_install the-package

Also, what they have already suggested: Installing packages using pip and virtual environments , which is the best practice for new projects.

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I had the same problem and I used these steps to solve it.

I added the path into "system environment variables".
I changed the "Registry editor". In order to do that, type "regeidt" in run, then open the "Registry editor". Go to "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem", choose "LongPathsEnabled" and change the "Valuedata" to "1" press the "Ok", and restart the computer.
Run "Command Prompt" as an "administrator" and type "pip install scikit-learn".

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Was facing this issue on windows when upgrading pip inside a virtual environment so in a loaded venv try

python -m pip install --upgrade pip

instead of using normal command like

pip install --upgrade pip #X

Can't use --user here, as we are in venv

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In my case, when I went into the properties of AppData folder, there were two checked check-boxes - one for 'Read-Only' and one for 'hidden'. I unchecked the 'hidden' option. It took 5 minutes to process. After that, I was able to install the packages successfully from cmd in administrator mode.

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Below worked for me

$ python -m pip install --user --upgrade pip

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Working inside a venv in Windows 10 that I received the error when using the PowerShell terminal inside VS Code. When using the command prompt terminal pip was upgraded successfully.