# Setting up OctoPrint on Windows

Do you just want to access your existing OctoPrint instance under Windows?

Then there's absolutely no need to follow this guide, this is for installing the OctoPrint server under Windows, which is probably a rather unusual setup. If all you want is to access your existing OctoPrint instance (e.g. running on a Raspberry Pi via the OctoPi image), fire up your browser of choice and direct it to that instance's URL. Don't know what that is? Read this guide instead.

While OctoPrint's intended use case is to be installed on low-powered embedded devices with Linux, it is platform agnostic and can also be installed under Windows instead of the more common option of installing it on something like a Pi.

Warning

Make sure to disable automatic reboots for updates in your Windows configuration if you intend to run OctoPrint productively under Windows, or your prints will get interrupted by that when you least expect it.

The nature of how windows handles file access also makes it currently impossible to update OctoPrint through itself (including switching to a release candidate and back to stable). You'll need to do that through the command line, and that might become annoying quickly.

To save you some hassle, it might be easier to just get yourself a Raspberry Pi or similar and install OctoPrint through OctoPi on that

## Installing Python, Git and OctoPrint

To install OctoPrint from source under Windows, you'll need to do the following:

1. Install Python 2.7 for 32bit from here (choose the "Windows x86 MSI Installer" package). Make sure to include pip in the installation and also to have the installer add python to your path.

2. Install the Microsoft Visual C++ Compiler for Python 2.7 from here.

3. Open a command prompt (Win+R and execute cmd) and install virtualenv using pip install virtualenv:

pip install virtualenv


You'll see something like the following, with different version numbers (prompt and output included, do not copy-paste this!):

C:\Users\YourUser>pip install virtualenv
You are using pip version 7.0.1, however version 7.1.2 is available.
Collecting virtualenv
Using cached virtualenv-13.1.2-py2.py3-none-any.whl
Installing collected packages: virtualenv
Successfully installed virtualenv-13.1.2


If you get a message about pip not having been found, your PATH hasn't yet been updated to include. Do it manually for now on the active prompt by redefining PATH:

PATH=%PATH%;C:\Python27\Scripts


Do not close the window with the prompt, keep it open!

4. Using the explorer, create a new folder for OctoPrint to reside in. For this tutorial we are assuming this to be C:\OctoPrint.

5. Open a command prompt (cmd), change into OctoPrint's source folder (cd C:\OctoPrint) and create a new virtualenv: virtualenv venv. Activate it: venv\Scripts\activate.bat.

cd C:\OctoPrint
virtualenv venv
venv\Scripts\activate.bat


That will looks like this (prompt and output included, do not copy-paste this!):

C:\>cd OctoPrint
C:\OctoPrint>virtualenv venv
New python executable in venv\Scripts\python.exe
Installing setuptools, pip, wheel...done.

C:\OctoPrint>venv\Scripts\activate.bat
(venv) C:\OctoPrint>


Note:

At this point it might be a good idea to make sure you have the most current version of pip installed in your venv, so better update that now:

pip install --upgrade pip

6. Perform a pip install octoprint:

pip install octoprint


That will look like this, with a different version number (prompt and output included, do not copy-paste this!):

(venv) C:\OctoPrint>pip install octoprint
running install
[...]
Finished processing dependencies for OctoPrint==1.3.11


Note

If this installs an old version of OctoPrint, pip probably still has something cached. In that case add --no-cache-dir to the install command, e.g.

pip install --no-cache-dir octoprint


To make this permanent, clean pip's cache by deleting %LocalAppData%\pip\Cache.

7. Start OctoPrint simply by executing octoprint serve:

(venv) C:\OctoPrint>octoprint serve
2019-08-20 10:56:22,329 - octoprint.server - INFO - ******************************************************************************
2019-08-20 10:56:22,332 - octoprint.server - INFO - Starting OctoPrint 1.3.11
2019-08-20 10:56:22,332 - octoprint.server - INFO - ******************************************************************************
[...]


Note:

At this point Windows will probably ask you if you want to allow OctoPrint to be accessible from within your network. Chances are high you want that, so allow access from trusted networks at least.

8. Open a new tab or window in your browser and enter http://localhost:5000. You should now be looking at your OctoPrint web interface.

If you want to access it from another computer on your local network, substitute localhost for your PC's IP, e.g. http://192.168.1.3:5000.

Congratulations, you now have a running OctoPrint setup!

To start your OctoPrint server, open a command prompt and run

C:\OctoPrint\venv\Scripts\octoprint.exe serve


If you want to stop OctoPrint, hit Ctrl+C in the command prompt window or simply close it.

## Optional: Creating a shortcut

For easier starting of your OctoPrint server in the future you might want to create a shortcut on your desktop or somewhere else you'll easily find again, pointing to C:\OctoPrint\venv\Scripts\octoprint.exe serve:

## Optional: Installing a webcam server and configuring OctoPrint for it

You can use something like YawCAM for similar functionality to MJPEG-Streamer under Windows. Enable the "HTTP" and "Stream" outputs. If you leave the configured ports at their defaults, your Stream-URL will be http://<ip_of_your_pc>:8081/video.mjpg and your Snapshot-URL will be http://<ip_of_your_pc>:8888/out.jpg.

You can configure these either through OctoPrint's own Settings dialog (see below) or in your config.yaml at %APPDATA%/OctoPrint:

webcam:
stream: http://<ip_of_your_pc>:8081/video.mjpg
snapshot: http://localhost:8888/out.jpg


If you also want to be able to use timelapsing, you'll have to obtain a static Windows build of FFMPEG. Those can be found here. Then configure the path to your ffmpeg.exe through the Settings dialog (see below) or config.yaml:

webcam:
stream: http://<ip_of_your_pc>:8081/video.mjpg
snapshot: http://localhost:8888/out.jpg
ffmpeg: C:\your\path\to\ffmpeg.exe


Note:

The screenshot shows 192.168.1.3 as the IP of the PC in the configured Stream-URL. You'll need to adjust that to match your PCs IP!

Due to the nature of Windows it's sadly not possible to have OctoPrint update itself like on other OSes (e.g. a Raspberry Pi running Linux/OctoPi). When you get an update notification, attempting to apply the update from within OctoPrint will fail. You'll have update manually:

1. Shutdown your OctoPrint server. If it is running the update process will fail.

2. Open a command prompt. Navigate to the folder your have OctoPrint installed in (here: C:\OctoPrint) and activate the virtual environment:

C:\>cd OctoPrint
C:\OctoPrint>venv\Scripts\activate.bat
(venv) C:\OctoPrint>

3. Perform a pip install --upgrade https://get.octoprint.org/latest:

pip install --upgrade https://get.octoprint.org/latest


That will look like this, with a different version number (prompt and output included, do not copy-paste this!):

(venv) C:\OctoPrint>pip install --upgrade https://get.octoprint.org/latest
running install
[...]
Finished processing dependencies for OctoPrint==1.3.6


Note

If this installs an old version of OctoPrint, pip probably still has something cached. In that case add --no-cache-dir to the install command, e.g.

pip install --no-cache-dir --upgrade https://get.octoprint.org/latest


To make this permanent, clean pip's cache by deleting %LocalAppData%\pip\Cache.

## Switching to another release channel

The instructions are basically the same as for Updating, the difference is only the URL you use for pip install --upgrade, which depends on the chosen release channel:

• Stable: https://get.octoprint.org/latest
• Maintenance RCs: https://get.octoprint.org/maintenance-rc
• Devel RCs: https://get.octoprint.org/devel-rc

Note

If this installs an old version of OctoPrint, pip probably still has something cached. In that case add --no-cache-dir to the install command, e.g.

pip install --no-cache-dir --upgrade https://get.octoprint.org/latest


To make this permanent, clean pip's cache by deleting %LocalAppData%\pip\Cache.

4 Likes

In response to a question on another forum which referred to this post: The post above is not about using a Windows PC to access OctoPrint running on a Raspberry Pi (that's simply a matter of pointing your PC's web browser to the correct location). The above post details installing OctoPrint on a Windows PC, instead of running it on a Pi.

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@John_Mc It always astonishes me how people interpret things I've rephrased the first sentence a bit to hopefully make it crystal clear.

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I agree... and it seems no matter how you phrase it, it won't make sense to some people. Sometimes we read what we want to see or what we already think, rather than what is actually on the page. (Guilty of that myself on occasion.)

This its very nice, I want a bot farm under windows with octoprint first I'm running it on an I3 desktop machine if everything goes smooth ill change to a dell server I own, but how can I create multiple instances under windows or debian @foosel

I would like to run OctoPrint on a windows xp computer. I followed the tutorial as given and it seems to work up until I try to put up the server with the "octoprint serve" command. At this point, I get a RuntimeError stating that my version of windows is too old and I need psutil 3.4.2 to run on Windows XP. Is this a futile effort or do you know some way around this?

Followed this tutorial and now i have octoprint on my windows machine. Now how can I access it outside of my network as I can only access it via local host or internal ip inside my network? I’m currently using octopi anywhere and/or astroprint to see the laptop camera on my phone and control the current print but looking to access the full octoprint capabilities not just access to camera outside of my network

1. There's a known issue using the Internet Explorer v11 browser to access the OctoPrint interface...
2. Make sure to turn off your computer's power-saving features to include: sleep, network adapter, disks and desktop lock.

This is my opinion of course, but not only is Windows XP of little use, neither is Windows these days. A Raspberry Pi 3 computer will set you back a whopping $35 plus the cost of a microSD card. Doing the math, if you leave your XP-based computer on 365 days per year, that will cost you about$225 for the electricity to run it. Compare this to the $5.71 that it would cost to run the Raspberry Pi 3 for a year. Any questions? I agree generally. However there are plenty of Atom based Windows tablets floating around for arount$50 that have touchscreens and cameras built in so for me it's a better buy than a Pi and it can run everything a Pi can plus every other legacy app as well.

Just a note for others. I found that when pip installing octoprint I got certificate errors, to get around that you can tell pip that it's a trusted domain like this:

pip --trusted-host get.octoprint.org install https://get.octoprint.org/latest


You comment in your article that running octoprint server on windows is an unusual setup. I happen to have a windows 10 machine next to my printer. Is there any reason I don't want to run on windows? I'm perfectly capable of running linux on debian or buying another raspberry pie but if it runs on windows without any limitations I would rather not add another machine to the setup.

• Power consumption
• The need to also have a monitor and keyboard and mouse attached (= more space, more power consumption)
• Updates of OctoPrint (and possibly plugins) not being that straight forward due to Windows locking files that are in use
• more that I can't think of right now

Thanks. In my case most of that is not relevant since:
The machine is already running 24x7
I access the machine remotely already
Updates being more difficult is a thing and could get me to change over time but I'm probably good here.
Don't know what these are.

I appreciate the quick reply and can see how these are valid reasons for many people to not use windows. At this point I'll stick with windows unless another more compelling reason comes up.

For 34 years I coded on Windows-based computers; about 75%+ of the money I made was because of them. And now I'm on Macs and Ubuntu. I now rarely use Microsoft Windows. To me, it just feels like:

1. Microsoft has lost their edge in the programming space
2. about 99% of the open-space world is written for some other operating system and not well tested on Windows
3. there was a period recently in which npm was basically dysfunctional on the Windows platform due to MAX_PATH issues
4. backslashes versus forward slashes
5. \n versus \r\n line endings
6. In a panic, they've been trying to abruptly change their platform and their app delivery to catch up with Apple and Windows 10 is painfully broken as a result

I teach software development. Every day a student walks up with some installation problem on a Windows-based laptop. Mongo doesn't install. Loopback won't compile. Mysql won't install.

To me, the ~$35 cost of a Raspberry Pi 3B computer for OctoPrint is a no-brainer with respect to the minimal hassles you'll see. Interesting perspective. I have linux machines, raspberry machines, chrome machines, and windows at home for various purposes. Some of which are brought up in your list (although I'm not sure why backslashes vs forward slashes is a factor.). So this is not a factor of a fear of working with non windows machines. I work on linux machines every day at work and home. I just happen to have a windows machine next to the printer (for windows reasons) . Also for reference (not that it's a lot of money) but a pi is closer to$100 by the time you finish getting power adaptors, sd card, camera, case (well I guess now that I have a printer I can print my own case).

The question isn't is linux better than windows but does this product fully work on windows. Why buy a low powered device when I have a full power server that has everything I need sitting 2 feet away?

P.S. I agree. I don't like running mongo or Mysql on windows. Same with Postgres and Oracle. All of these products were designed for Linux first and windows as an afterthought and are complex software.

That one turns up in countless scripts in the npmjs space (think "npm install ...") in which someone blindly fetches the macro __dirname and then tries to concatenate /whatever to it. For Windows, that always breaks.

Google: "__dirname + '/'" Windows for about 92,000 hits on that

There are correct ways of doing this with Node but because of that 99% factor, nobody puts the time into it. And then, there's an issue and someone then deals with it.

I have a fondness for most operating systems. And yet every evening I have a line of Windows-based students who bring me new problems to solve. Every single week I chalk up one more thing to remember within this space as in "ah, Mocha just rev'd to 5.2 and now it's doing this (insert random bad thing)".

An open-source program running under Windows as the operating system is a gamble from Day 1 as well as Day 60 (when you run updates). Gina's going to rev the underlying Python perhaps with v1.3.9 and then—even if it worked great for you on v1.3.8 with the earlier Python—will it continue to work as expected with a platform adjustment? You roll your dice, you take your chances, folks. That's mostly what I'm saying, that it's a new rule of thumb which I'll make up here inline:

In the world of open-source solutions your best chance of success is to have the same operating system, same major revisions of infrastructure and same browser choice as 80% of the coders who contribute to it.

For each degree of deviation from that norm you collectively inherit 10% of all new issues with each revision of each module. Windows represents several degrees of deviation from that norm.

There becomes a point where the aggregate number of hours chasing bug fixes over the span of a year greatly outweighs the cost of choosing the correct platform from the beginning.

~ OutsourcedGuru

I will say that a Raspberry Pi 3B computer has something that your workstations and mine do not: 40 GPIO pins. Do not underestimate the awesomeness of being able to add sensors, relays and such to your computer. Can you plug a USB-based whatever into your Windows computer? Yes. But can you just design something new that nobody else has ever done and do the same? Not necessarily. The true power of a 3D printer is to unleash your inventiveness. Once you get into this mode, you'll start to see possibilities for modding this thing.

1 Like

Linux ain't such a walk in the park either yaknow

I'm becoming more and more convinced that nobody ever actually RUNS programs on Linux, all it seems I ever do is watch the screen scroll up while I install one program so that I can run another program so that I can install the program that I wanted to run in the first place

Oh, you need nodejs for that. So I'll just install nodejs

No, you need to have git for that. So I'll just install git

Okay, I downloaded the tarball. What the hell is a tarball, and how do I squeeze my program out of it ?

Well, you have to untar it

How do I do that ?

You just type tar

If I have to UNTAR it, why am I typing TAR ?

And don't forget the -x

What the hell does the -x do ?

Nevermind. I'll just use an abacus

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That's so true that it hurts. :laugh:

1 Like