[issue32545] Unable to install Python 3.7.0a4 on Windows 10 - Error 0x80070643: Failed to install MSI package.

[chipstuff]

chipstuff <kamil.a at live.com> added the comment:

Experienced the same issue, this is either Permissions or Antivirus blocking Python from being installed.

After uninstall third party AV (avast) and running the following commands to update Defender's signature files the installation was completed.


“%PROGRAMFILES%\Windows Defender\MPCMDRUN.exe” -RemoveDefinitions -All

“%PROGRAMFILES%\Windows Defender\MPCMDRUN.exe” -SignatureUpdate

Source: https://appuals.com/

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nosy: +chipstuff

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<https://bugs.python.org/issue32545>
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