I'm a developer on this extension. In the marketplace tab in VSCode you can right click the python extension and select "Install another version" when you do that it will pop up a list of all the old versions of the extension. This should allow you to go back and find the version that works for your VSCode.

Answer from Ian Huff on Stack Overflow
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GitHub
github.com › microsoft › vscode-python › issues › 11063
Failed to install 'ms-python.python'. · Issue #11063 · microsoft/vscode-python
April 10, 2020 - Jedi or Language Server? (i.e. what is "python.jediEnabled" set to; more info How to update the language server to the latest stable version #3977): N/A ... Successfully be able to install Python extension from the marketplace.
Author   jlorich
Discussions

VSCode 1.45.1: Failed to install 'ms-python.python'
Related to #11063: Installing newer version 1.45.1 did not help in my case I get a notification Failed to install 'ms-python.python' with a Download Manually button, when trying to install ... More on github.com
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5
May 19, 2020
Failed to install 'ms-python.python'
the extention failed to install. All I can see "Python extention loading". I swithed to trace level log. Where can I find the log to send it to you? More on github.com
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6
December 3, 2019
Failed to install 'ms-python.python'
Issue Type: Bug Python extension is suggested. But when I select it I get this error message. I have tried turning off defender but it does not help. VS Code version: Code 1.39.2 (6ab5985, 2019-10-... More on github.com
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3
October 29, 2019
Unable to install python extension from visual studio code
I'm trying to add the python extension from the visual studio code, at the bottom right it says "Error while installing 'Python' extension. Please check the log for more details" - under it says "try to download manually" which sends… More on learn.microsoft.com
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January 25, 2023
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GitHub
github.com › microsoft › vscode › issues › 95052
Fail to install 'ms-python.python' · Issue #95052 · microsoft/vscode
April 12, 2020 - VSCode Version: VS 1.45.0 insiders and 1.44.0 stable OS Version: Windows 10 Steps to Reproduce: Go to Extensions panel Select "Python" module (from microsoft) Click install Got error message: Faile to install 'ms-python.python' I also tr...
Author   yanggehua
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GitHub
github.com › microsoft › vscode-python › issues › 11887
VSCode 1.45.1: Failed to install 'ms-python.python' · Issue #11887 · microsoft/vscode-python
May 19, 2020 - Related to #11063: Installing newer version 1.45.1 did not help in my case I get a notification Failed to install 'ms-python.python' with a Download Manually button, when trying to install the extension. Environment data VS Code version:...
Published   May 19, 2020
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GitHub
github.com › microsoft › vscode › issues › 85936
Failed to install 'ms-python.python' · Issue #85936 · microsoft/vscode
December 3, 2019 - Failed to install 'ms-python.python'#85936 · Copy link · Assignees · Labels · extensionsIssues concerning extensionsIssues concerning extensionsinfo-neededIssue requires more information from posterIssue requires more information from poster · pelx · opened ·
Author   pelx
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GitHub
github.com › microsoft › vscode › issues › 83448
Failed to install 'ms-python.python' · Issue #83448 · microsoft/vscode
October 29, 2019 - Issue Type: Bug Python extension is suggested. But when I select it I get this error message. I have tried turning off defender but it does not help. VS Code version: Code 1.39.2 (6ab5985, 2019-10-15T15:35:18.241Z) OS version: Windows_NT...
Author   domokane
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GitHub
github.com › microsoft › vscode › issues › 77859
MS Python extension won't install with VS Code in user local folder · Issue #77859 · microsoft/vscode
July 24, 2019 - Issue Type: Bug Install Visual Code in C:\Users \AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Visual Studio Code Install MS Python extension version 2019.6.24221 Installation fails with message "Failed to install 'ms-python...
Author   Alex-S42
Find elsewhere
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GitHub
github.com › microsoft › vscode-python › issues › 21113
Unable to install extension 'ms-python.python' as it is not compatible with VS Code '1.77.3'. · Issue #21113 · microsoft/vscode-python
April 25, 2023 - You signed out in another tab or window. Reload to refresh your session. You switched accounts on another tab or window. Reload to refresh your session. ... Python version (& distribution if applicable, e.g. Anaconda): 3.10.7 ... I downloaded ...
Author   emolinaro
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GitHub
github.com › microsoft › vscode › issues › 101472
VSCode 1.46.1: Failed to install 'ms-python.python' · Issue #101472 · microsoft/vscode
July 1, 2020 - This has happened for some time, and I've seen other issues raised for other versions of VS Code, but it's still happening on 1.46.1 for me. The only solution is to download the extension manually and install it that way. I had reported this ...
Published   Jul 01, 2020
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GitHub
github.com › microsoft › vscode › issues › 238261
python installation failing in VS code · Issue #238261 · microsoft/vscode
January 20, 2025 - Hi VS Code Team, We are not able to install python and extensipons in the VS Code. All users are facing same issue. Could you please fix the issue as soon as possible. Error: Failed to install 'ms-python.python'. Thanks & Regards, Ram
Author   thupalliram
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Microsoft Learn
learn.microsoft.com › en-us › answers › questions › 5552153 › how-to-fix-failed-to-install-the-python-extension
How to fix "Failed to install the python extension" despite python program being installed. - Microsoft Q&A
September 11, 2025 - After activate VS code app and open my python file (.ipynb), I need to select Kernel, after then I selected Python environment, and VS code app is try to install python, however the app keep on looking for something for install python despite that the python program actually being installed, and eventually show error message: failed to install the python extension.
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GitHub
github.com › microsoft › vscode › issues › 133043
Unable to install ms-python.python, ms-toolsai.jupyter not compatible with current VS Code version, 1.58.0 · Issue #133043 · microsoft/vscode
September 13, 2021 - Issue Type: Bug Steps to Reproduce: Just after a clean install, launched VS Code Searched for ms-python.python, clicked 'Install' Returns 'Unable to install ms-toolsai.jupyter extension because it is not compatible with the current versi...
Author   scaeuus
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Cursor
forum.cursor.com › support › bug reports
Python extension failed to install SSH connection - Bug Reports - Cursor - Community Forum
August 22, 2024 - Just installed Cursor for the first time. I remote develop. Have used VSCode for years. Connected to remote host, install seemed to go fine, but the Python extension fails to download. 2024-08-21 17:31:44.259 [info] Getting Manifest... ms-python.python 2024-08-21 17:31:44.325 [info] Installing extension: ms-python.python {"installPreReleaseVersion":false,"context":{"clientTargetPlatform":"darwin-arm64"},"installOnlyNewlyAddedFromExtensionPack":true,"isApplicationScoped":false,"profileLocation":...
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Python
bugs.python.org › issue32545
Issue 32545: Unable to install Python 3.7.0a4 on Windows 10 - Error 0x80070643: Failed to install MSI package. - Python tracker
This issue tracker has been migrated to GitHub, and is currently read-only. For more information, see the GitHub FAQs in the Python's Developer Guide · This issue has been migrated to GitHub: https://github.com/python/cpython/issues/76726
Top answer
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Hi Lance Volcanix,

Modifying REGISTRY settings incorrectly can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the configuring of REGISTRY settings can be solved. Modifications of these settings are at your own risk.Before you modify the registry, make sure to back it up and make sure that you understand how to restore the registry if a problem occurs. For information about how to back up, restore, and edit the registry, click on the link below.*http://support.microsoft.com/kb/256986/EN-US/*

Follow the instructions in the link below which might help you in resolving the issue.

1. Click on Start.

2. Type in Administrative tools in start search and hit enter.

3. In Administrative tools open Local Security Policy.

4. In Local Security Policy right click Software Restriction Policies and click “New Software Rectriction Policy”.

5. Now Left click on software restriction policies and in the right-hand window you should see enforcement.

6. Double-click on enforcement and set the policy to apply to “All Users Except Local Administrators”

Check if the issue is resolved.

If that does not work, you may go ahead and follow the instructions below.

1. Click on start.

2. Type in Regedit and hit enter.

3. Locate HKLM\Software\Policies\Microsoft\Windows\Installer

Create: DisableMSI       Type: REG_DWORD  value = 0   Browse to HKEY_CLASSES_ROOT\Installer\Products\

Search the list for the product that is causing the error and delete the folder in the products folder and check if the issue is resolved.

Using Third Party Software, including hardware drivers can cause serious problems that may prevent your computer from booting properly. Microsoft cannot guarantee that any problems resulting from the use of Third Party Software can be solved. Using Third Party Software is at your own risk.

Please post back and let us know if this has helped to resolve your issue.

Regards,

KarthiK TP

2 of 4
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1. Click on Start.

2. Type in Administrative tools in start search and hit enter.

3. In Administrative tools open Local Security Policy.

4. In Local Security Policy right click Software Restriction Policies and click “New Software Rectriction Policy”.

5. Now Left click on software restriction policies and in the right-hand window you should see enforcement.

6. Double-click on enforcement and set the policy to apply to “All Users Except Local Administrators”

1. Click on start.

2. Type in Regedit and hit enter.

3. Locate HKLM\Software\Policies\Microsoft\Windows*Installer*

I've used bold on the problems in the above

When I right click on 'Software Restriction Policies', it gives me the option to delete all of the contents of the section :/, but no option to select 'New Software Rectriction Policy'. Even after i changed the enforce option to 'all users except local admin' and rebooted, it didn't let me install

In regedit, I went throught the necesary path, H_key_local_machine, all the way to windows, but there was no 'installer' subfolder.

Help, please :'(

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GitHub
github.com › microsoft › vscode-python › issues › 432
Activating extension `ms-python.python` failed: Missing required @injectable annotation in: PersistentStateFactory. · Issue #432 · microsoft/vscode-python
December 15, 2017 - VS Code version: 1.19.0 Python Extension version: 0.9.0 Python Version: python2.7 & python3.6 (home-brew) OS and version: macOS High Sierra 10.13.2 ... [Extension Host] Here is the error stack: Error: Missing required @Injectable annotation in: PersistentStateFactory. at getTargets (/Users/lili01/.vscode/extensions/ms-python.python-0.9.0/node_modules/inversify/lib/planning/reflection_utils.js:19:15) at Object.getDependencies (/Users/lili01/.vscode/extensions/ms-python.python-0.9.0/node_modules/inversify/lib/planning/reflection_utils.js:10:19) at /Users/lili01/.vscode/extensions/ms-python.pytho
Author   viewstar000