How to "npm install" bcrypt on Windows 7 - node.js

Question

I've installed node.js v6.9.1 together with npm version 4.1.2 and I've already used this combination for some projects
Now I wanted to use the bcrypt npm package in my project, but the installation fails miserably
npm install bcrypt --save
I've also tried to run this command with admin priviledges, to no avail
This is the error I get
> bcrypt#1.0.2 install C:\Users\ttheiner\NodeProjects\authtest\node_modules\bcry
pt
> node-pre-gyp install --fallback-to-build
node-pre-gyp ERR! Tried to download(404): https://github.com/kelektiv/node.bcryp
t.js/releases/download/v1.0.2/bcrypt_lib-v1.0.2-node-v48-win32-x64.tar.gz
node-pre-gyp ERR! Pre-built binaries not found for bcrypt#1.0.2 and node#6.9.1 (
node-v48 ABI) (falling back to source compile with node-gyp)
C:\Users\ttheiner\NodeProjects\authtest\node_modules\bcrypt>if not defined npm_c
onfig_node_gyp (node "C:\Users\ttheiner\AppData\Roaming\npm\node_modules\npm\bin
\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" clean ) else (node
"" clean )
C:\Users\ttheiner\NodeProjects\authtest\node_modules\bcrypt>if not defined npm_c
onfig_node_gyp (node "C:\Users\ttheiner\AppData\Roaming\npm\node_modules\npm\bin
\node-gyp-bin\\..\..\node_modules\node-gyp\bin\node-gyp.js" configure --fallback
-to-build --module=C:\Users\ttheiner\NodeProjects\authtest\node_modules\bcrypt\l
ib\binding\bcrypt_lib.node --module_name=bcrypt_lib --module_path=C:\Users\tthei
ner\NodeProjects\authtest\node_modules\bcrypt\lib\binding ) else (node "" confi
gure --fallback-to-build --module=C:\Users\ttheiner\NodeProjects\authtest\node_m
odules\bcrypt\lib\binding\bcrypt_lib.node --module_name=bcrypt_lib --module_path
=C:\Users\ttheiner\NodeProjects\authtest\node_modules\bcrypt\lib\binding )
gyp ERR! configure error
gyp ERR! stack Error: Can't find Python executable "python", you can set the PYT
HON env variable.
gyp ERR! stack at Object.failNoPython (C:\Users\ttheiner\AppData\Roaming\npm
\node_modules\npm\node_modules\node-gyp\lib\configure.js:454:19)
gyp ERR! stack at Object.<anonymous> (C:\Users\ttheiner\AppData\Roaming\npm\
node_modules\npm\node_modules\node-gyp\lib\configure.js:480:16)
gyp ERR! stack at C:\Users\ttheiner\AppData\Roaming\npm\node_modules\npm\nod
e_modules\graceful-fs\polyfills.js:284:29
gyp ERR! stack at FSReqWrap.oncomplete (fs.js:123:15)
gyp ERR! System Windows_NT 6.1.7601
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\ttheiner\\App
Data\\Roaming\\npm\\node_modules\\npm\\node_modules\\node-gyp\\bin\\node-gyp.js"
"configure" "--fallback-to-build" "--module=C:\\Users\\ttheiner\\NodeProjects\\
authtest\\node_modules\\bcrypt\\lib\\binding\\bcrypt_lib.node" "--module_name=bc
rypt_lib" "--module_path=C:\\Users\\ttheiner\\NodeProjects\\authtest\\node_modul
es\\bcrypt\\lib\\binding"
gyp ERR! cwd C:\Users\ttheiner\NodeProjects\authtest\node_modules\bcrypt
gyp ERR! node -v v6.9.1
gyp ERR! node-gyp -v v3.5.0
gyp ERR! not ok
node-pre-gyp ERR! build error
node-pre-gyp ERR! stack Error: Failed to execute 'node-gyp.cmd configure --fallb
ack-to-build --module=C:\Users\ttheiner\NodeProjects\authtest\node_modules\bcryp
t\lib\binding\bcrypt_lib.node --module_name=bcrypt_lib --module_path=C:\Users\tt
heiner\NodeProjects\authtest\node_modules\bcrypt\lib\binding' (1)
node-pre-gyp ERR! stack at ChildProcess.<anonymous> (C:\Users\ttheiner\NodeP
rojects\authtest\node_modules\node-pre-gyp\lib\util\compile.js:83:29)
node-pre-gyp ERR! stack at emitTwo (events.js:106:13)
node-pre-gyp ERR! stack at ChildProcess.emit (events.js:191:7)
node-pre-gyp ERR! stack at maybeClose (internal/child_process.js:877:16)
node-pre-gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/chi
ld_process.js:226:5)
node-pre-gyp ERR! System Windows_NT 6.1.7601
node-pre-gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\tthe
iner\\NodeProjects\\authtest\\node_modules\\node-pre-gyp\\bin\\node-pre-gyp" "in
stall" "--fallback-to-build"
node-pre-gyp ERR! cwd C:\Users\ttheiner\NodeProjects\authtest\node_modules\bcryp
t
node-pre-gyp ERR! node -v v6.9.1
node-pre-gyp ERR! node-pre-gyp -v v0.6.32
node-pre-gyp ERR! not ok
Failed to execute 'node-gyp.cmd configure --fallback-to-build --module=C:\Users\
ttheiner\NodeProjects\authtest\node_modules\bcrypt\lib\binding\bcrypt_lib.node -
-module_name=bcrypt_lib --module_path=C:\Users\ttheiner\NodeProjects\authtest\no
de_modules\bcrypt\lib\binding' (1)
npm WARN authtest#1.0.0 No repository field.
npm WARN authtest#1.0.0 No license field.
npm ERR! Windows_NT 6.1.7601
npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\ttheiner\\AppDat
a\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js" "install" "bcrypt" "--save"
npm ERR! node v6.9.1
npm ERR! npm v4.1.2
npm ERR! code ELIFECYCLE
npm ERR! bcrypt#1.0.2 install: `node-pre-gyp install --fallback-to-build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the bcrypt#1.0.2 install script 'node-pre-gyp install --fallb
ack-to-build'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the bcrypt package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node-pre-gyp install --fallback-to-build
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs bcrypt
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls bcrypt
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR! C:\Users\ttheiner\NodeProjects\authtest\npm-debug.log
The problem seems to be that npm cannot find pre-built binaries so it tries to compile the sources using python (which I don't seem to have).
Do I need to install python for this? If yes, can you point me in the right direction? Is it true that there is no pre-built version of bcrypt?
EDIT: After installing Python 2.7 the error changes... seems like it tries to use MSBuild to compile some C++ code.
C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V140\Microsoft.CppBuild.targets(366,5): warning MSB8003: Could not find WindowsSDKDir var
iable from the registry. TargetFrameworkVersion or PlatformToolset may be set to an invalid version number. [C:\Users\ttheiner\NodeProject
s\authtest\node_modules\bcrypt\build\bcrypt_lib.vcxproj]
TRACKER : error TRK0005: Failed to locate: "CL.exe". The system cannot find the file specified. [C:\Users\ttheiner\NodeProjects\authtest\no
de_modules\bcrypt\build\bcrypt_lib.vcxproj]
gyp ERR! build error
gyp ERR! stack Error: `C:\Program Files (x86)\MSBuild\14.0\bin\msbuild.exe` failed with exit code: 1
gyp ERR! stack at ChildProcess.onExit (C:\Users\ttheiner\AppData\Roaming\npm\node_modules\npm\node_modules\node-gyp\lib\build.js:276:23)
gyp ERR! stack at emitTwo (events.js:106:13)
gyp ERR! stack at ChildProcess.emit (events.js:191:7)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:215:12)
gyp ERR! System Windows_NT 6.1.7601
gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\ttheiner\\AppData\\Roaming\\npm\\node_modules\\npm\\node_modules\\node-gy
p\\bin\\node-gyp.js" "build" "--fallback-to-build" "--module=C:\\Users\\ttheiner\\NodeProjects\\authtest\\node_modules\\bcrypt\\lib\\binding
\\bcrypt_lib.node" "--module_name=bcrypt_lib" "--module_path=C:\\Users\\ttheiner\\NodeProjects\\authtest\\node_modules\\bcrypt\\lib\\binding
"
gyp ERR! cwd C:\Users\ttheiner\NodeProjects\authtest\node_modules\bcrypt
gyp ERR! node -v v6.9.1
gyp ERR! node-gyp -v v3.5.0
gyp ERR! not ok
node-pre-gyp ERR! build error
node-pre-gyp ERR! stack Error: Failed to execute 'node-gyp.cmd build --fallback-to-build --module=C:\Users\ttheiner\NodeProjects\authtest\no
de_modules\bcrypt\lib\binding\bcrypt_lib.node --module_name=bcrypt_lib --module_path=C:\Users\ttheiner\NodeProjects\authtest\node_modules\bc
rypt\lib\binding' (1)
node-pre-gyp ERR! stack at ChildProcess.<anonymous> (C:\Users\ttheiner\NodeProjects\authtest\node_modules\node-pre-gyp\lib\util\compile.
js:83:29)
node-pre-gyp ERR! stack at emitTwo (events.js:106:13)
node-pre-gyp ERR! stack at ChildProcess.emit (events.js:191:7)
node-pre-gyp ERR! stack at maybeClose (internal/child_process.js:877:16)
node-pre-gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:226:5)
node-pre-gyp ERR! System Windows_NT 6.1.7601
node-pre-gyp ERR! command "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\ttheiner\\NodeProjects\\authtest\\node_modules\\node-pre-gyp\\bi
n\\node-pre-gyp" "install" "--fallback-to-build"
node-pre-gyp ERR! cwd C:\Users\ttheiner\NodeProjects\authtest\node_modules\bcrypt
node-pre-gyp ERR! node -v v6.9.1
node-pre-gyp ERR! node-pre-gyp -v v0.6.32
node-pre-gyp ERR! not ok
Failed to execute 'node-gyp.cmd build --fallback-to-build --module=C:\Users\ttheiner\NodeProjects\authtest\node_modules\bcrypt\lib\binding\b
crypt_lib.node --module_name=bcrypt_lib --module_path=C:\Users\ttheiner\NodeProjects\authtest\node_modules\bcrypt\lib\binding' (1)
npm WARN authtest#1.0.0 No repository field.
npm WARN authtest#1.0.0 No license field.
npm WARN Error: EPERM: operation not permitted, scandir 'C:\Users\ttheiner\NodeProjects\authtest\node_modules\dashdash\node_modules'
npm WARN at Error (native)
npm WARN { Error: EPERM: operation not permitted, scandir 'C:\Users\ttheiner\NodeProjects\authtest\node_modules\dashdash\node_modules'
npm WARN at Error (native)
npm WARN errno: -4048,
npm WARN code: 'EPERM',
npm WARN syscall: 'scandir',
npm WARN path: 'C:\\Users\\ttheiner\\NodeProjects\\authtest\\node_modules\\dashdash\\node_modules' }
npm ERR! Windows_NT 6.1.7601
npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Users\\ttheiner\\AppData\\Roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js" "instal
l" "bcrypt" "--save"
npm ERR! node v6.9.1
npm ERR! npm v4.1.2
npm ERR! code ELIFECYCLE
npm ERR! bcrypt#1.0.2 install: `node-pre-gyp install --fallback-to-build`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the bcrypt#1.0.2 install script 'node-pre-gyp install --fallback-to-build'.
npm ERR! Make sure you have the latest version of node.js and npm installed.
npm ERR! If you do, this is most likely a problem with the bcrypt package,
npm ERR! not with npm itself.
npm ERR! Tell the author that this fails on your system:
npm ERR! node-pre-gyp install --fallback-to-build
npm ERR! You can get information on how to open an issue for this project with:
npm ERR! npm bugs bcrypt
npm ERR! Or if that isn't available, you can get their info via:
npm ERR! npm owner ls bcrypt
npm ERR! There is likely additional logging output above.
npm ERR! Please include the following file with any support request:
npm ERR! C:\Users\ttheiner\NodeProjects\authtest\npm-debug.log

Answer 1

I would suggest you use bcrypt-nodejs:
https://www.npmjs.com/package/bcrypt-nodejs
It provides almost the same functionality with easy usage.
Original answer:
Can you try the following:
Install Python (http://www.python.org/download/releases/2.7.5/)
Install Visual Studio 2012/13 Express (or other)
Install Windows SDK (for Windows 7 / 8)
Install Win64 OpenSSL v1.0.1g
Open "Developer Command Prompt for VS2012" as Administrator and test install
Then:
npm install node-gyp -g
npm install bcrypt -g

Answer 2

I've had the same or at least a similar error.
Running the following before trying to install bcrypt solved it for me:
npm install --global --production windows-build-tools

Answer 3

I also faced the same issue today whilst trying to install bcrypt on Windows 10 desktop. Turns out that bcrypt support stable versions of node better check out the docs
The solution for me was:
Upgrade node to a stable version: I manually downloaded and installed Windows installer from Node website.
Install the Windows build tools globally: npm install --global --production windows-build-tools
Finally npm install bcrypt --save
After this everything worked ok.

Answer 4

I also encountered this error.
I reinstall node-gyp using this command npm install node-gyp -g
after that I reinstall bccrypt using npm install bcrypt
And finally works

Answer 5

When working on the node API project.
Solution
rm -rf node_modules/bcrypt
npm install node-gyp -g
npm install bcrypt#[VERSION] -g
it's working for me on window 10.