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# Running Electrum from source on Windows (development version)
## Prerequisites
- [python3](https://www.python.org/)
- [git](https://gitforwindows.org/)
## Main steps
### 1. Check out the code from GitHub:
```
> git clone https://github.com/spesmilo/electrum.git
> cd electrum
> git submodule update --init
```
Run install (this should install most dependencies):
```
> python3 -m pip install --user -e ".[gui,crypto]"
```
### 2. Install `libsecp256k1`
[libsecp256k1](https://github.com/bitcoin-core/secp256k1) is a required dependency.
This is a C library, which you need to compile yourself.
Electrum needs a dll, named `libsecp256k1-0.dll`, placed into the inner `electrum/` folder.
For Unix-like systems, the (`contrib/make_libsecp256k1.sh`) script does this for you,
however it does not work on Windows.
If you have access to a Linux machine (e.g. VM) or perhaps even using
WSL (Windows Subsystem for Linux), you can cross-compile from there to Windows,
and build this dll:
```
$ GCC_TRIPLET_HOST="x86_64-w64-mingw32" ./contrib/make_libsecp256k1.sh
```
Alternatively, MSYS2 and MinGW-w64 can be used directly on Windows, as follows.
- download and install [MSYS2](https://www.msys2.org/)
- run MSYS2
- inside the MSYS2 shell:
```
$ pacman -Syu
$ pacman -S --needed git base-devel mingw-w64-x86_64-toolchain mingw-w64-x86_64-autotools
$ export PATH="$PATH:/mingw64/bin"
```
`cd` into the git clone, e.g. `C:\wspace\electrum` (auto-mounted at `/c/wspace/electrum`)
```
$ cd /c/wspace/electrum
$ GCC_TRIPLET_HOST="x86_64-w64-mingw32" ./contrib/make_libsecp256k1.sh
```
(note: this is a bit cumbersome, see [issue #5976](https://github.com/spesmilo/electrum/issues/5976)
for discussion)
### 3. Run electrum:
```
> python3 ./run_electrum
```