[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[Steve Dower]

Steve Dower  added the comment:

The UCRT can no longer fail to install - we do an app-local install on Win 8.1, 
and it's already present on Win 10.

--
resolution:  -> fixed
stage:  -> resolved
status: open -> closed

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[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[Eryk Sun]

Eryk Sun  added the comment:

Maybe it's worth adding a recommendation in the docs to reboot and try to 
repair an installation that fails in the final stage due to ucrt not being 
fully installed yet, i.e. missing api-ms-win-crt-*.dll. Or maybe this case can 
be detected and display a message box to that end.

--
type:  -> behavior
versions: +Python 3.10, Python 3.8, Python 3.9 -Python 3.5

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[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[Marius Gedminas]

Marius Gedminas added the comment:

For the record, I rebooted once, after installing both 32-bit and 64-bit 
versions of Python 3.5.

(Also, it seems that the Python 3.5 installer didn't install pip for me, which 
could be fallout from this bug?  I had to run python -m ensurepip to get it.)

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[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[eryksun]

eryksun added the comment:

> The problem here is probably that installing the CRT update 
> required a restart

I saw that, but it didn't make any sense to me that the DLL isn't available 
immediately after wusa.exe exits. Is it in limbo until the system is restarted? 
I know in Windows 10 these api-ms-win-crt* DLLs are actually virtual API sets 
managed by the loader (i.e. they all have the same module handle, that of 
ucrtbase.dll). How does this relate to what's going on with Windows 8/Server 
2012, if at all? Marius reports that "Python seems to work", but doesn't 
mention whether or not a reboot was necessary.

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[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[Steve Dower]

Steve Dower added the comment:

The problem here is probably that installing the CRT update required a restart 
(see the line below from the log), but we didn't interrupt installation to make 
you restart before continuing.

>From the first log file:

[0A68:0EC8][2015-09-14T05:54:24]i319: Applied execute package: 
crt_14.0_v6.2_x64, result: 0x0, restart: Required


Handling this nicely could be some work. We would want to force the restart 
immediately if the user is installing pip or precompiling the stdlib, but 
otherwise they can finish installation and then restart. I'll try and look into 
this soon, but I don't think it needs to hold up a 3.5.1.

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[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[Steve Dower]

Steve Dower added the comment:

Windows Updates may do something different here. I'd guess it's added to a 
queue and will be installed on next restart, probably based on something it 
detected as being in use, or maybe just because it's a server OS (or possibly 
both - typically a reboot isn't required to install the UCRT for the first 
time, but maybe an early prerelease version was there?).

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[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[eryksun]

eryksun added the comment:

Per "Python 3.5.0 (32-bit)_20150914055131.log", the installer detects the OS as 
NT 6.2.9200 (Windows 8/Server 2012), and installs Windows8-RT-KB2999226-x64.msu.

[0A68:0EC8][2015-09-14T05:51:31]i001: 
  Burn v3.10.0.1823, 
  Windows v6.2 (Build 9200: Service Pack 0), 
  path: C:\Users\mg\Downloads\python-3.5.0.exe

[0F48:03B4][2015-09-14T05:54:05]i301: 
  Applying execute package: crt_14.0_v6.2_x64, 
  action: Install, 
  path: C:\ProgramData\Package Cache\
0F275C704EE13CA9E98834DB6DA50D4693FF2BAF\
Windows8-RT-KB2999226-x64.msu, 
  arguments: '"C:\Windows\SysNative\wusa.exe" 
  "C:\ProgramData\Package Cache\
   0F275C704EE13CA9E98834DB6DA50D4693FF2BAF\
   Windows8-RT-KB2999226-x64.msu" 
  /quiet /norestart'

which seems to succeed: 

[0A68:0EC8][2015-09-14T05:54:24]i319: 
  Applied execute package: crt_14.0_v6.2_x64, 
  result: 0x0, 
  restart: Required

Yet trying to run py.exe to compile the standard library fails with 
STATUS_DLL_NOT_FOUND (0xC135):

[0F48:03B4][2015-09-14T05:55:11]i301: 
  Applying execute package: compileall_AllUsers, 
  action: Install, 
  path: C:\ProgramData\Package Cache\
1D1205B0F2D3B4B31CC368C86271206AEF327163\py.exe, 
  arguments: '"C:\ProgramData\Package Cache\
   1D1205B0F2D3B4B31CC368C86271206AEF327163\py.exe" 
  -3.5-32 -E -s -Wi "C:\Python35\Lib\compileall.py" 
  -f -x "bad_coding|badsyntax|site-packages|py2_|
 lib2to3\\tests|venv\\scripts" 
  "C:\Python35\Lib"'

[0F48:03B4][2015-09-14T05:57:24]e000: 
  Error 0xc135: Process returned error: 0xc135

Your screenshot shows that api-ms-win-crt-runtime-l1-1-0.dll is missing. Does 
this DLL exist in "%SystemRoot%\SysWOW64"?

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[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[Marius Gedminas]

Marius Gedminas added the comment:

Yes, it exists: http://imgur.com/YCmApN7

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[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[Terry J. Reedy]

Terry J. Reedy added the comment:

Pre-compiling should generally not be needed; I try to remember to uncheck it.  
If you do want everything compiled, read the doc for compileall module.

--
nosy: +terry.reedy

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[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[eryksun]

eryksun added the comment:

There should be a bunch of logs named "Python 3.5.0*.log" in your user's %TEMP% 
directory. If you don't mind, zip them up and attach the file to this issue for 
Steve Dower to review when he returns from vacation. 

In the mean time, try directly installing the Universal CRT update, 
[KB2999226][1]. For Server 2012 R2, [KB2919355][2] should be installed first.

[1]: http://www.microsoft.com/en-us/download/details.aspx?id=48234
[2]: http://www.microsoft.com/en-us/download/details.aspx?id=42334

--
nosy: +eryksun

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[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[eryksun]

eryksun added the comment:

> Pre-compiling should generally not be needed

It's a useful optimization if Python is installed to a directory that doesn't 
grant write access to regular users, such as %ProgramFiles%.

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[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[Marius Gedminas]

Changes by Marius Gedminas :


Added file: http://bugs.python.org/file40487/Python 3.5.0 installer crash 
logs.zip

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[issue25117] Windows installer: precompiling stdlib fails with missing DLL errors

[Zachary Ware]

Changes by Zachary Ware :


--
components: +Windows
nosy: +paul.moore, steve.dower, tim.golden, zach.ware

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[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.)

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

[Aaron Meurer]

Changes by Aaron Meurer :


--
nosy: +Aaron.Meurer

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