pip 在 Windows 上安装访问被拒绝

Question

I am trying to run pip install mitmproxy on Windows, but I keep getting access denied, even with cmd and PowerShell using the Run as Administrator option.

WindowsError: [Error 5] Access is denied: 'c:\\users\\bruno\\appdata\\local\\temp\\easy_install-0fme6u\\cryptography-0.9.1\\.eggs\\cffi-1.1.2-py2.7-win-amd64.egg\\_cffi_backend.pyd'

How can I make this work?

Answer 1

For Windows, in Command Prompt (Admin) try to run pip install using the Python executable:

python -m pip install mitmproxy

This should work, at least it worked for me for other package installation.

Answer 2

Change your Python installation folder's security permissions by:

1. Open a Python shell
2. Go to task manager
3. Find the python process
4. Right-click and open location
5. The folder will open in explorer, go up a directory
6. Right-click the folder and select properties
7. Click the security tab and hit 'edit'
8. Add everyone and give them permission to Read and Write.
9. Save your changes

If you open cmd as admin; then you can do the following:

If Python is set in your PATH , then:

python -m pip install mitmproxy

Answer 3

Personally, I found that by opening cmd as admin then run python -m pip install mitproxy seems to fix my problem.

Note:- I installed python through chocolatey

Answer 4

One additional thing that has not been covered in previous answers and that often cause issues on Windows and stopped me from installing some package despite running as admin is that you get the same permission denied error if there is another program that use some of the files you (or pip install ) try to access. This is a really stupid "feature" of Windows that pops up many times, eg when trying to move some files.

In addition I have no clue how to figure out which program locks a particular file, so the easiest ting to do is to reboot and do the installation before starting anything, in particular before running eg Spyder or any other Python-based software. You can also try to close all programs, but it can be tricky to know which one actually holds a file. For a directory for example, it is enough that you have an Explorer window open at that directory.

Answer 5

As, i am installing through anaconda Prompt .In my case, it didn't even work with python -m pip install Then, i add this

python -m pip install <package_name> --user

It works for me.

Like: python -m pip install mitmproxy --user

Another you should try that run the Command Prompt as Run as Administrator and then try pip install. It should work either.

Answer 6

Open cmd with "Run as administrator" and execute the command pip install mitmproxy . It will install it.

Answer 7

The cause in my case was having a jupyter notebook open, which was importing the relevant library; the root cause seems to be windows error due to the file being open / in use (see also @Robert's answer, and the recommendation to reboot).

So another thing to verify is that no other python processes are running.

For me, shutting down the notebook server solved the issue.

Answer 8

Try to give permission to full control the python folder.

Find the python root directory-->right button click-->properties-->security-->edit-->give users Full Control-->yes and wait the process finished.

It works for me.

Answer 9

尝试手动删除文件夹c:\\users\\bruno\\appdata\\local\\temp\\easy_install-0fme6u ，然后重试 pip 命令。

Answer 10

Opening command prompt As Administrator just worked for me without using Python executable. Right click on command prompt shortcut and choose "Run as Administrator". Then run the following command.

pip install Django

Answer 11

When all else fails, try quitting your IDE. I had many cases in which PyCharm was causing this. As soon as I quit PyCharm, I was able to finally install my packages from the command line. Alternatively, you can also install through PyCharm itself in Settings -> Project: xxx -> Project Interpreter -> + .

Answer 12

1. Open Command Prompt as Administrator.

2. To Install any Python Package use this command including --user .

pip install --ignore-installed --upgrade --user <packagename>

Answer 13

以管理员身份运行 cmd.exe，然后键入：

python -m pip install

Answer 14

I met a similar problem.But the error report is about

[SSL: TLSV1_ALERT_ACCESS_DENIED] tlsv1 alert access denied (_ssl.c:777)

First I tried this https://python-forum.io/Thread-All-pip-install-attempts-are-met-with-SSL-error#pid_28035 ,but seems it couldn't solve my problems,and still repeat the same issue.

And Second if you are working on a business computer,generally it may exist a web content filter(but I can access https://pypi.python.org through browser directly).And solve this issue by adding a proxy server.

For windows,open the Internet properties through IE or Chrome or whatsoever ,then set valid proxy address and port ,and this way solve my problems

Or just adding the option pip --proxy [proxy-address]:port install mitmproxy .But you always need to add this option while installing by pypi

The above two solution is alternative for you demand.

Answer 15

In my case, it didn't even work with python -m pip install

What I have done is, from a cmd as administrator:

PsExec.exe -i -s -d cmd.exe

In order to spawn a SYSTEM cmd, then pip install mitmproxy

;)

Answer 16

Running cmd as administrator solved for me. You can also try --user. If you do not want to repeat the steps you need to give full access to anaconda folder.

Answer 17

Had the same problem when installing pycaret .

I've solved in two different ways (that I'll list below).

---

Option 1

Upgraded pip with

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

Then

pip install --user pycaret[full]

Found a relevant discussion on the error here .

---

Option 2

Assuming one is using Anaconda, open Anaconda prompt, for the environment one is working with, as admin

And run

pip install --user pycaret[full]

or

pip install pycaret[full]

Answer 18

In my case, Windows Defender is blocking the process and every time I run a pip command it will show pop up of security threat. What I do is exclude the python folder. Below are the steps:

• Click the Windows icon, search "Windows Security" app, and open it
• Choose Virus & threat protection on the left menu
• Scroll down to Virus & threat protection settings
• Click Manage settings
• Scroll down to Exclusions
• Click Add or remove exclusions
• Click Add an exclusion, and choose Folder
• Navigate to this path C:\Users{Your_User}\AppData\Local\Programs\Python
• Select folder
• Relaunch your Command prompt

Answer 19

Sometimes you just need to make sure you do not have any python environments running.

Answer 20

I also work in secure environment, Hence for install module I use this code:-

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

in last add your library name, such as:

pip install --trusted-host pypi.python.org --trusted-host files.pythonhosted.org --trusted-host pypi.org numpy 

Answer 21

Just close all the python files opened. And try to run as administrator. It will work.

eg

pip install mitmproxy