Install AUTOMATIC1111's Stable Diffusion WebUI on Windows (NVIDIA GPU)

NOTE: This guide only works for NVIDIA GPUs. I will update it with the latest on AMD GPU installation soon.

AUTOMATIC1111’s Stable Diffusion WebUI is the most popular way to run Stable Diffusion on your own computer. In this guide we’ll get you up and running with an installation that will let you run Stable Diffusion or any other model you are interested in.

Hardware Requirements

You need to meet the following requirements.

16GB RAM
NVIDIA (GTX 7xx or newer) GPU with at least 2GB VRAM (AMD GPU will work, but NVIDIA is recommended)
Linux or Windows 7/8/10/11+ or Mac M1/M2 (Apple Silicon)
10GB disk space (includes models)

Step 1: Install Git

Go to the official Git website to download Git.

Get the Standalone Installer. Choose the appropriate Git installer for your Windows operating system. If you don’t know whether your Windows OS is 32-bit or 64-bit, read this (new tab).

Open the .exe you just downloaded. Click Next to accept the license.

The default options are completely fine. Click Next.

You will be given many screens of options. The defaults are all fine. Click Next for all of them. Git will install.

Step 2: Install Python

Install Python from the official site. You want the latest version of 3.10. Make sure you choose the right version, 32-bit or 64-bit.

Important: In the installation wizard, make sure you check “Add python.exe to PATH“.

Step 3: Download Web UI

Press the Window keyboard key or click on the Windows icon (Start icon). Search for “Command Prompt” and click on the Command Prompt App when it appears.

You should see a line like this:

C:\Users\YOUR_USER_NAME

Use this command to move into folder:

cd FOLDER_NAME

Use this command to go back up a folder:

cd ..

Use this command to list all folders within the folder you are in:

dir

As an example, I will install Stable Diffusion in my Documents folder. I would type this command:

cd documents

When you are in the folder you want to install Stable Diffusion in, copy and paste the following command:

git clone https://github.com/AUTOMATIC1111/stable-diffusion-webui.git

Give the Web UI some time to download:

After your download is complete, you’ll be able to see your new stable-diffusion-webui in the Windows Explorer:

Now to configure your VRAM settings. You may encounter “out of memory” errors if you do not configure this correctly.

You can check how much VRAM you have by typing “dxdiag” in the searchbar and clicking dxdiag, which is the DirectX Diagnostic Tool. Your VRAM will be listed under Display Memory in the Display (or Display 2) tab:

If you have 2GB of VRAM or less, you will need to use --lowvram
If you have 4GB of VRAM or less, you will need to use --medvram
If you have >4GB of VRAM you do not need any additional options and can skip this part.

Open the stable-diffusion-webui folder you just downloaded. Find the file named webui-user.bat (Windows Batch File) and right click -> Edit (Windows 11: Right click -> Show more options -> Edit).

Add the command you need after the set COMMANDLINE_ARGS= line. For example:

2GB of VRAM or less, you will need to use `--lowvram`
4GB of VRAM or less, you will need to use `--medvram`

That’s all you have to do for the WebUI!

Step 4: Download Model

The model is all the stuff the AI has been trained on and is capable of generating. Model files end in ‘.ckpt‘, which stands for ‘checkpoint’.

If you already have your model you can skip this step.

Some models you might be interested in:

When your .ckpt file is finished downloading, move it to the folder stable-diffusion-webui/models/Stable-diffusion.

You can place as many models in this folder as you want.

Step 5: Run the WebUI

In the stable-diffusion-webui folder there is a file called ‘webui-user.bat’. Double click this:

It will take several minutes for the Web UI to install the required modules.

When it is finished you will see the line: Running on local URL: http://127.0.0.1:7860.

Common issues at this step:

RuntimeError: Couldn’t install torch.

Fix: Make you you have Python 3.10.x installed. Type python --version in your Command Prompt. If you have an older version of Python, you will need to uninstall it and re-install it from the Python website.

Fix #2: Your Python version is correct but you still get the same error? Delete the venv directory in stable-diffusion-webui and re-run webui-user.bat

RuntimeError: Cannot add middleware after an application has started

Fix: Go into your stable-diffusion-webui folder, right click -> Open Terminal. Copy and paste this line into terminal and press enter:

Everything else works but I can’t go to the address

Make sure you have not typed “https://” by accident, the address always starts with “http://“
In this example my port address is http://127.0.0.1:7860. Yours might be different. Please read the success message in your Command Prompt carefully for the correct address.

Go to this address that your command prompt specifies. For me it is http://127.0.0.1:7860

AUTOMATIC1111’s Stable Diffusion WebUI up and running

You’ll notice at the top there’s a toggle called “Stable Diffusion Checkpoint”.

You can use this to switch to any model you have placed in the stable-diffusion-webui/models/Stable-diffusion folder.

What now?

Enter a descriptive prompt and press the big “Generate” button to see if Stable Diffusion is working properly. From here the sky is the limit and you can go in a bunch of directions:

Browse Lexica for cool Stable Diffusion prompts.

Learn about the following settings:

Seed
CFG Scale
Steps

Try different models:

The most popular models
Anime models

Yeah, AI moves way too fast

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42 thoughts on “Install AUTOMATIC1111’s Stable Diffusion WebUI on Windows (NVIDIA GPU)”

Jim Witt

January 20, 2023 at 10:23 am

Did work for me.

Creating venv in directory D:\StableDiffusion\stable-diffusion-webui\venv using python “C:\Users\16027\AppData\Local\Programs\Python\Python310\python.exe”
venv “D:\StableDiffusion\stable-diffusion-webui\venv\Scripts\Python.exe”
Python 3.10.6 (tags/v3.10.6:9c7b4bd, Aug 1 2022, 21:53:49) [MSC v.1932 64 bit (AMD64)]
Commit hash: b165e341e70300f66c8a77b9383041f4147b24a8
Installing torch and torchvision
Installing gfpgan
Installing clip
Installing open_clip
Cloning Stable Diffusion into repositories\stable-diffusion-stability-ai…
Cloning Taming Transformers into repositories\taming-transformers…
Cloning K-diffusion into repositories\k-diffusion…
Cloning CodeFormer into repositories\CodeFormer…
Cloning BLIP into repositories\BLIP…
Installing requirements for CodeFormer
Installing requirements for Web UI
Launching Web UI with arguments:
No module ‘xformers’. Proceeding without it.
LatentDiffusion: Running in eps-prediction mode
DiffusionWrapper has 859.52 M params.
Calculating sha256 for D:\StableDiffusion\stable-diffusion-webui\models\Stable-diffusion\v2-1_768-ema-pruned.ckpt: ad2a33c361c1f593c4a1fb32ea81afce2b5bb7d1983c6b94793a26a3b54b08a0
Loading weights [ad2a33c361] from D:\StableDiffusion\stable-diffusion-webui\models\Stable-diffusion\v2-1_768-ema-pruned.ckpt
loading stable diffusion model: RuntimeError
Reply
- Yubin Ma
  
  February 13, 2023 at 12:16 am
  
  Hey Jim, try getting the config file as well, as in this guide: https://aituts.com/install-stable-diffusion-v2-1/
  Reply
mOlOtof

January 26, 2023 at 5:25 am

Hi, I followed every step in the tutorial and unfortunately I go a runtime error. From what a final comment says : “The most likely cause of this is you are trying to load Stable Diffusion 2.0 model without specifying its config file.” I hope this bit of code helps as well :

raise RuntimeError(‘Error(s) in loading state_dict for {}:\n\t{}’.format(
RuntimeError: Error(s) in loading state_dict for LatentDiffusion:
size mismatch for model.diffusion_model.input_blocks.1.1.proj_in.weight: copying a param with shape torch.Size([320, 320]) from checkpoint, the shape in current model is torch.Size([320, 320, 1, 1]).
size mismatch for model.diffusion_model.input_blocks.1.1.transformer_blocks.0.attn2.to_k.weight: copying a param with shape torch.Size([320, 1024]) from checkpoint, the shape in current model is torch.Size([320, 768]).

Much thanks!
Reply
- Yubin Ma
  
  February 13, 2023 at 12:17 am
  
  Hey! Try downloading the config yaml and renaming it as in this guide: https://aituts.com/install-stable-diffusion-v2-1/
  Reply
Dogman

January 30, 2023 at 6:16 pm

everything worked fine!!!

But how do I start it the next time after restarting my pc?
Reply
- Yubin Ma
  
  January 30, 2023 at 7:11 pm
  
  You can run the app by double clicking webui-user.bat in the folder that you downloaded.
  Reply
Zephe

January 31, 2023 at 11:38 pm

Thanks for the detailed instructions.
Yet, I keep running into a “CUDA out of memory…” when running the webui-user.bat, which seems to be in relation with pytorch. Being an absolute novice in these matters, I have not clue about what’s happening.
Any tips welcome 🙂
Reply
- Yubin Ma
  
  February 4, 2023 at 9:53 pm
  
  Hey Zephe, if restarting your computer doesn’t work, try this: right click webui-user.bat and click edit. Add the line:
  
  set COMMANDLINE_ARGS=--listen --no-half --precision full --port 9999 --disable-safe-unpickle --deepdanbooru
  
  at the beginning, and try running it again.
  Reply
Cineroo

February 1, 2023 at 3:37 pm

This doesn’t work on AMD GPUs (6800XT here). Added the command line argument –skip-torch-cuda-test which allowed the installation to continue and while I can run the webui, it fails on trying to generate an image. I can add the arguments –precision full –no-half to make it work but I think this forces it to run on CPU.
Reply
- Yubin Ma
  
  February 27, 2023 at 8:27 pm
  
  Hey Cineroo, try this for AMD: AMD Guide
  Reply
BC

February 3, 2023 at 3:25 am

webui-user.bat did not start for me. not window popped up, no error code, nothing.
Reply
- Yubin Ma
  
  February 13, 2023 at 12:06 am
  
  Try re-installing the WebUI, this time make sure it is on C: drive, and make sure there are no spaces in the path name (no spaces in any of the containing folder names)
  Reply
Kereel

February 5, 2023 at 2:19 am

when I click twice on webui-user.bat, an inscription appears that the system cannot find the specified path. What should I do now?
Reply
- Yubin Ma
  
  February 13, 2023 at 12:08 am
  
  Hey Kereel, please check this post out.
  Reply
Dan

February 6, 2023 at 7:08 pm

Hi, I got an error when trying to install Automatic1111.
It said it can’t use my GPU. I have an AMD Radeon RX 580 2048SP. Is there a solution or this GPU just doesn’t work?
This specifically:
RuntimeError: Error running command.
Command: “E:\Stable Diffussion Anything AI\stable-diffusion-webui\venv\Scripts\python.exe” -c “import torch; assert torch.cuda.is_available(), ‘Torch is not able to use GPU; add –skip-torch-cuda-test to COMMANDLINE_ARGS variable to disable this check'”
Error code: 1
stdout:
stderr: Traceback (most recent call last):
File “”, line 1, in
AssertionError: Torch is not able to use GPU; add –skip-torch-cuda-test to COMMANDLINE_ARGS variable to disable this check

Thanks in advance.
Reply
- Yubin Ma
  
  February 6, 2023 at 9:31 pm
  
  Hello Dan, try right clicking webui-user.sh and click edit. You can edit with any program.
  
  Add --precision full --no-half after COMMANDLINE_ARGS=
  
  Let me know if that fixes the problem.
  Reply
  - Dan
    
    February 7, 2023 at 7:24 am
    
    Thanks for your reply. I added it and uncommented that line, but it still has the same error.
    Command prompt said this:
    Python 3.9.6 (tags/v3.9.6:db3ff76, Jun 28 2021, 15:26:21) [MSC v.1929 64 bit (AMD64)]
    Commit hash: ea9bd9fc7409109adcd61b897abc2c8881161256
    Traceback (most recent call last):
    File “E:\Stable Diffussion Anything AI\stable-diffusion-webui\launch.py”, line 360, in
    prepare_environment()
    File “E:\Stable Diffussion Anything AI\stable-diffusion-webui\launch.py”, line 272, in prepare_environment
    run_python(“import torch; assert torch.cuda.is_available(), ‘Torch is not able to use GPU; add –skip-torch-cuda-test to COMMANDLINE_ARGS variable to disable this check'”)
    File “E:\Stable Diffussion Anything AI\stable-diffusion-webui\launch.py”, line 129, in run_python
    return run(f'”{python}” -c “{code}”‘, desc, errdesc)
    File “E:\Stable Diffussion Anything AI\stable-diffusion-webui\launch.py”, line 105, in run
    raise RuntimeError(message)
    RuntimeError: Error running command.
    Command: “E:\Stable Diffussion Anything AI\stable-diffusion-webui\venv\Scripts\python.exe” -c “import torch; assert torch.cuda.is_available(), ‘Torch is not able to use GPU; add –skip-torch-cuda-test to COMMANDLINE_ARGS variable to disable this check'”
    Error code: 1
    stdout:
    stderr: Traceback (most recent call last):
    File “”, line 1, in
    AssertionError: Torch is not able to use GPU; add –skip-torch-cuda-test to COMMANDLINE_ARGS variable to disable this check
    Reply
Omar G.

February 7, 2023 at 1:18 pm

Hello, I got this error and I don’t know to solve it. I need to learn Python.

Installing torch and torchvision
Looking in indexes: https://pypi.org/simple, https://download.pytorch.org/whl/cu117
Collecting torch==1.13.1+cu117
ERROR: Exception:
Traceback (most recent call last):
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\cli\base_command.py”, line 160, in exc_logging_wrapper
status = run_func(*args)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\cli\req_command.py”, line 247, in wrapper
return func(self, options, args)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\commands\install.py”, line 415, in run
requirement_set = resolver.resolve(
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\resolution\resolvelib\resolver.py”, line 92, in resolve
result = self._result = resolver.resolve(
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\resolvelib\resolvers.py”, line 481, in resolve
state = resolution.resolve(requirements, max_rounds=max_rounds)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\resolvelib\resolvers.py”, line 348, in resolve
self._add_to_criteria(self.state.criteria, r, parent=None)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\resolvelib\resolvers.py”, line 172, in _add_to_criteria
if not criterion.candidates:
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\resolvelib\structs.py”, line 151, in __bool__
return bool(self._sequence)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\resolution\resolvelib\found_candidates.py”, line 155, in __bool__
return any(self)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\resolution\resolvelib\found_candidates.py”, line 143, in
return (c for c in iterator if id(c) not in self._incompatible_ids)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\resolution\resolvelib\found_candidates.py”, line 47, in _iter_built
candidate = func()
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\resolution\resolvelib\factory.py”, line 206, in _make_candidate_from_link
self._link_candidate_cache[link] = LinkCandidate(
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py”, line 297, in __init__
super().__init__(
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py”, line 162, in __init__
self.dist = self._prepare()
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py”, line 231, in _prepare
dist = self._prepare_distribution()
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\resolution\resolvelib\candidates.py”, line 308, in _prepare_distribution
return preparer.prepare_linked_requirement(self._ireq, parallel_builds=True)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\operations\prepare.py”, line 491, in prepare_linked_requirement
return self._prepare_linked_requirement(req, parallel_builds)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\operations\prepare.py”, line 536, in _prepare_linked_requirement
local_file = unpack_url(
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\operations\prepare.py”, line 166, in unpack_url
file = get_http_url(
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\operations\prepare.py”, line 107, in get_http_url
from_path, content_type = download(link, temp_dir.path)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\network\download.py”, line 134, in __call__
resp = _http_get_download(self._session, link)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\network\download.py”, line 117, in _http_get_download
resp = session.get(target_url, headers=HEADERS, stream=True)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\requests\sessions.py”, line 600, in get
return self.request(“GET”, url, **kwargs)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_internal\network\session.py”, line 518, in request
return super().request(method, url, *args, **kwargs)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\requests\sessions.py”, line 587, in request
resp = self.send(prep, **send_kwargs)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\requests\sessions.py”, line 701, in send
r = adapter.send(request, **kwargs)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\cachecontrol\adapter.py”, line 48, in send
cached_response = self.controller.cached_request(request)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\cachecontrol\controller.py”, line 155, in cached_request
resp = self.serializer.loads(request, cache_data, body_file)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\cachecontrol\serialize.py”, line 95, in loads
return getattr(self, “_loads_v{}”.format(ver))(request, data, body_file)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\cachecontrol\serialize.py”, line 186, in _loads_v4
cached = msgpack.loads(data, raw=False)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\msgpack\fallback.py”, line 125, in unpackb
ret = unpacker._unpack()
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\msgpack\fallback.py”, line 590, in _unpack
ret[key] = self._unpack(EX_CONSTRUCT)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\msgpack\fallback.py”, line 590, in _unpack
ret[key] = self._unpack(EX_CONSTRUCT)
File “C:\stable_diffusion\stable-diffusion-webui\venv\lib\site-packages\pip\_vendor\msgpack\fallback.py”, line 603, in _unpack
return bytes(obj)
MemoryError
Traceback (most recent call last):
File “C:\stable_diffusion\stable-diffusion-webui\launch.py”, line 360, in
prepare_environment()
File “C:\stable_diffusion\stable-diffusion-webui\launch.py”, line 269, in prepare_environment
run(f'”{python}” -m {torch_command}’, “Installing torch and torchvision”, “Couldn’t install torch”, live=True)
File “C:\stable_diffusion\stable-diffusion-webui\launch.py”, line 89, in run
raise RuntimeError(f”””{errdesc or ‘Error running command’}.
RuntimeError: Couldn’t install torch.
Command: “C:\stable_diffusion\stable-diffusion-webui\venv\Scripts\python.exe” -m pip install torch==1.13.1+cu117 torchvision==0.14.1+cu117 –extra-index-url https://download.pytorch.org/whl/cu117
Error code: 2
Reply
- Yubin Ma
  
  February 12, 2023 at 11:41 pm
  
  First try deleting the venv folder in stable-diffusion-webui and then restart the Web-ui by clicking webui-user.bat
  
  If this doesn’t work, try uninstalling Python and reinstalling Python 3.10.6
  Reply
Emile

February 10, 2023 at 5:30 am

Hi, I got an error when I try to install Stable Diffusion. It says :

ERROR: Could not find a version that satisfies the requirement torch==1.13.1+cu117 (from versions: none)

and

ERROR: No matching distribution found for torch==1.13.1+cu117

I tried a lot of things, but still couldn’t figure out what to do exactly.

Thanks in advance,
Reply
- Yubin Ma
  
  February 27, 2023 at 8:26 pm
  
  You’ll need Python 3.10,
  check this out:
  https://github.com/AUTOMATIC1111/stable-diffusion-webui/issues/7166
  Reply
JD

February 10, 2023 at 5:58 pm

I am running on a RX 5700 XT card and am getting similar error any ideas?

ERROR: Could not find a version that satisfies the requirement torch==1.13.1+cu117 (from versions: none)
ERROR: No matching distribution found for torch==1.13.1+cu117
Traceback (most recent call last):
File “X:\Ai\stable-diffusion-webui\launch.py”, line 360, in
prepare_environment()
File “X:\Ai\stable-diffusion-webui\launch.py”, line 269, in prepare_environment
run(f'”{python}” -m {torch_command}’, “Installing torch and torchvision”, “Couldn’t install torch”, live=True)
File “X:\Ai\stable-diffusion-webui\launch.py”, line 89, in run
raise RuntimeError(f”””{errdesc or ‘Error running command’}.
RuntimeError: Couldn’t install torch.
Command: “X:\Ai\stable-diffusion-webui\venv\Scripts\python.exe” -m pip install torch==1.13.1+cu117 torchvision==0.14.1+cu117 –extra-index-url https://download.pytorch.org/whl/cu117
Error code: 1
Reply
JD

February 10, 2023 at 6:06 pm

I found the answer:

https://github.com/AUTOMATIC1111/stable-diffusion-webui/wiki/Install-and-Run-on-AMD-GPUs

In the webui-user.sh add this

on the line:
# install command for torch
add this

TORCH_COMMAND=’pip install torch torchvision –extra-index-url https://download.pytorch.org/whl/rocm5.1.1‘ python launch.py –precision full –no-half
Reply
JD

February 10, 2023 at 6:13 pm

i was to quic i still do not get it to run 🙁
Reply
- Yubin Ma
  
  February 27, 2023 at 8:24 pm
  
  Hey JD, check if this solves your issues: AMD guide
  Reply
Craftmax

February 11, 2023 at 1:16 am

is it possible to install on another drive rather than “C:/”?
Reply
- Yubin Ma
  
  February 12, 2023 at 10:59 pm
  
  Yes, you can type the drive name directly in Command Prompt to change to it, such as D:
  Reply
Craftmax

February 11, 2023 at 9:49 pm

Can you install it on another drive?
Reply
- Yubin Ma
  
  February 12, 2023 at 10:45 am
  
  Yes, to access another drive in the command prompt, type the drive’s letter, followed by :.
  
  For example, you could type D: and then press Enter.
  Reply
dada

February 12, 2023 at 2:42 am

not connect to http://127.0.0.1:7860 / Help
Reply
- Yubin Ma
  
  February 13, 2023 at 12:22 am
  
  Could be any of the following:
  – your address is different, check the success message in command prompt
  – your WebUI is not running anymore, restart it
  Reply
Kitkat

February 12, 2023 at 3:00 pm

I’ve double-clicked the webui-user.bat file and every time, it ends with this:

raise RuntimeError(“Cannot add middleware after an application has started”)
RuntimeError: Cannot add middleware after an application has started
Press any key to continue . . .
Reply
- Yubin Ma
  
  February 12, 2023 at 10:37 pm
  
  Try this: right click the stable-diffusion-webui folder and click “Open in Terminal”
  
  Copy and paste the following command and press enter:
  .\venv\Scripts\python.exe -m pip install --upgrade fastapi==0.90.1
  
  Now try running webui-user.bat again (will not need to re-install modules)
  Reply
Kitkat

February 13, 2023 at 1:02 am

I had to download Windows Terminal from the Microsoft Store as I am on Windows 10. But these instructions worked, thank you!
Reply
pain

February 17, 2023 at 1:28 am

everytime i try to open it it says

Python 3.10.10 (tags/v3.10.10:aad5f6a, Feb 7 2023, 17:20:36) [MSC v.1929 64 bit (AMD64)]
Commit hash: 3715ece0adce7bf7c5e9c5ab3710b2fdc3848f39
Fetching updates for Taming Transformers…
Checking out commit for Taming Transformers with hash: 24268930bf1dce879235a7fddd0b2355b84d7ea6…
Traceback (most recent call last):
File “C:\Users\User\Downloads\stable-diffusion-webui\launch.py”, line 360, in
prepare_environment()
File “C:\Users\User\Downloads\stable-diffusion-webui\launch.py”, line 301, in prepare_environment
git_clone(taming_transformers_repo, repo_dir(‘taming-transformers’), “Taming Transformers”, taming_transformers_commit_hash)
File “C:\Users\User\Downloads\stable-diffusion-webui\launch.py”, line 156, in git_clone
run(f'”{git}” -C “{dir}” checkout {commithash}’, f”Checking out commit for {name} with hash: {commithash}…”, f”Couldn’t checkout commit {commithash} for {name}”)
File “C:\Users\User\Downloads\stable-diffusion-webui\launch.py”, line 105, in run
raise RuntimeError(message)
RuntimeError: Couldn’t checkout commit 24268930bf1dce879235a7fddd0b2355b84d7ea6 for Taming Transformers.
Command: “git” -C “repositories\taming-transformers” checkout 24268930bf1dce879235a7fddd0b2355b84d7ea6
Error code: 128
stdout:
stderr: fatal: reference is not a tree: 24268930bf1dce879235a7fddd0b2355b84d7ea6
Reply
- Yubin Ma
  
  February 27, 2023 at 8:21 pm
  
  Hey – try reinstalling git (https://git-scm.com/download/win) and see if that gets you going.
  Reply
Aetheria

February 19, 2023 at 6:37 am

I’m not entirely sure whats wrong but when ever I open the webui-user.bat file it doesn’t run and gives me this:
Couldn’t launch python

exit code: 9009

stderr:
Python was not found; run without arguments to install from the Microsoft Store, or disable this shortcut from Settings > Manage App Execution Aliases.

Launch unsuccessful. Exiting.
It’s strange because I have python 3.10.6 and it has worked for me in the past on other python related projects.
Reply
- Yubin Ma
  
  February 20, 2023 at 11:26 am
  
  Try this:
  
  Right click > Edit Webui-user.bat in notepad
  
  You’ll see Python=
  
  Find your python.exe install directory and add it after the equals
  
  Example
  
  Python=C:/python310/python.exe
  
  Some people’s python installs to program files, if that’s the case, uninstall it and install it to a folder that has no spaces. The installer won’t work if any file paths have spaces. Example that wouldn’t install “C:/program files/python”
  Reply
Shrek

February 22, 2023 at 6:31 am

Hi I tried to generate an image but it always gives me an error saying:

Error completing request
Arguments: (‘task(j6cfrp2r0n9r7va)’, ‘A photorealistic image of an astronaut riding a horse on mars’, ”, [], 20, 0, False, False, 1, 1, 7, -1.0, -1.0, 0, 0, 0, False, 512, 512, False, 0.7, 2, ‘Latent’, 0, 0, 0, [], 0, False, False, ‘positive’, ‘comma’, 0, False, False, ”, 1, ”, 0, ”, 0, ”, True, False, False, False, 0) {}
Traceback (most recent call last):
File “D:\Stable Diffusion\stable-diffusion-webui-master\modules\call_queue.py”, line 56, in f
res = list(func(*args, **kwargs))
File “D:\Stable Diffusion\stable-diffusion-webui-master\modules\call_queue.py”, line 37, in f
res = func(*args, **kwargs)
File “D:\Stable Diffusion\stable-diffusion-webui-master\modules\txt2img.py”, line 56, in txt2img
processed = process_images(p)
File “D:\Stable Diffusion\stable-diffusion-webui-master\modules\processing.py”, line 486, in process_images
res = process_images_inner(p)
File “D:\Stable Diffusion\stable-diffusion-webui-master\modules\processing.py”, line 621, in process_images_inner
uc = get_conds_with_caching(prompt_parser.get_learned_conditioning, negative_prompts, p.steps, cached_uc)
File “D:\Stable Diffusion\stable-diffusion-webui-master\modules\processing.py”, line 570, in get_conds_with_caching
cache[1] = function(shared.sd_model, required_prompts, steps)
File “D:\Stable Diffusion\stable-diffusion-webui-master\modules\prompt_parser.py”, line 140, in get_learned_conditioning
conds = model.get_learned_conditioning(texts)
File “D:\Stable Diffusion\stable-diffusion-webui-master\repositories\stable-diffusion-stability-ai\ldm\models\diffusion\ddpm.py”, line 669, in get_learned_conditioning
c = self.cond_stage_model(c)
File “D:\Stable Diffusion\stable-diffusion-webui-master\venv\lib\site-packages\torch\nn\modules\module.py”, line 1194, in _call_impl
return forward_call(*input, **kwargs)
File “D:\Stable Diffusion\stable-diffusion-webui-master\modules\sd_hijack_clip.py”, line 229, in forward
z = self.process_tokens(tokens, multipliers)
File “D:\Stable Diffusion\stable-diffusion-webui-master\modules\sd_hijack_clip.py”, line 254, in process_tokens
z = self.encode_with_transformers(tokens)
File “D:\Stable Diffusion\stable-diffusion-webui-master\modules\sd_hijack_open_clip.py”, line 28, in encode_with_transformers
z = self.wrapped.encode_with_transformer(tokens)
File “D:\Stable Diffusion\stable-diffusion-webui-master\repositories\stable-diffusion-stability-ai\ldm\modules\encoders\modules.py”, line 177, in encode_with_transformer
x = self.text_transformer_forward(x, attn_mask=self.model.attn_mask)
File “D:\Stable Diffusion\stable-diffusion-webui-master\repositories\stable-diffusion-stability-ai\ldm\modules\encoders\modules.py”, line 189, in text_transformer_forward
x = r(x, attn_mask=attn_mask)
File “D:\Stable Diffusion\stable-diffusion-webui-master\venv\lib\site-packages\torch\nn\modules\module.py”, line 1194, in _call_impl
return forward_call(*input, **kwargs)
File “D:\Stable Diffusion\stable-diffusion-webui-master\venv\lib\site-packages\open_clip\transformer.py”, line 154, in forward
x = x + self.ls_1(self.attention(self.ln_1(x), attn_mask=attn_mask))
File “D:\Stable Diffusion\stable-diffusion-webui-master\venv\lib\site-packages\torch\nn\modules\module.py”, line 1194, in _call_impl
return forward_call(*input, **kwargs)
File “D:\Stable Diffusion\stable-diffusion-webui-master\venv\lib\site-packages\open_clip\transformer.py”, line 27, in forward
x = F.layer_norm(x, self.normalized_shape, self.weight, self.bias, self.eps)
File “D:\Stable Diffusion\stable-diffusion-webui-master\venv\lib\site-packages\torch\nn\functional.py”, line 2515, in layer_norm
return torch.layer_norm(input, normalized_shape, weight, bias, eps, torch.backends.cudnn.enabled)
RuntimeError: “LayerNormKernelImpl” not implemented for ‘Half’
Reply
- Yubin Ma
  
  February 27, 2023 at 8:15 pm
  
  Hey Shrek, try this:
  
  Open webui-user.bat with Notepad.
  
  Edit it to add “–precision full –no-half” to the COMMANDLINE_ARGS.
  
  The last 2 lines of webui-user.bat should look like this:
  
  set COMMANDLINE_ARGS= –precision full –no-half
  
  Save the file.
  
  Relaunch and see if this fixes the problem.
  Reply
Kevso

February 28, 2023 at 2:03 pm

I have this problem, i try installing differents versions of Python but nothing works.
exit code: 1

stderr:
C:\Program Files\Python310\python.exe: No module named pip

Launch unsuccessful. Exiting.
Reply
- Yubin Ma
  
  March 2, 2023 at 11:26 am
  
  Hey Kevso,
  
  You can try opening your terminal/command prompt and running the following command to install pip:
  
  python3 -m ensurepip --upgrade
  
  OR py -m ensurepip --upgrade
  Reply

Install AUTOMATIC1111’s Stable Diffusion WebUI on Windows (NVIDIA GPU)