[New-bugs-announce] [issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[Marius Gedminas]

New submission from Marius Gedminas:

I installed Python 3.5 on a Windows Server 2012 VM, twice (once the 32-bit, and once the 64-bit version).  When it started throwing error dialogs at me, I started taking screenshots: http://imgur.com/a/zwfz4.

What happened:
- I selected advanced installation
- checked "install for all users"
- changed the install path to c:\python35 (and c:\python35-64)
- when the installer reached "Precompiling standard library" I got the error: "Python has stopped working".
- clicking "check online for a solution" produces this explanation: "api-ms-win-crt-runtime-l1-1-0.dll is missing from your computer".
- dismissing the error dialog leads the installer to say the installation is finished (presumably successfully); Python seems to work.

(The last dialog about VCRUNTIME140.dll is unrelated -- it's what happens if I try to use Python 3.7 to run virtualenv to create a Python 3.5 virtualenv.  I'll file a separate bug, once I figure out if it's a Python or a virtualenv bug.)

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components: Installation
messages: 250722
nosy: mgedmin
priority: normal
severity: normal
status: open
title: Windows installer: precompiling stdlib fails with missing DLL errors
versions: Python 3.5

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue25117>
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