# Open Existing Virtual Environments

If you installed Mito in a virtual environment, follow these instructions to relaunch your Mito environmnet. 

## How to open open an Existing Virtual Environment 

{% tabs %}
{% tab title="Python Virtual Environment" %}
Activate your environment 

* **On Windows** in command prompt:

{% code fullWidth="true" %}

```
mitoenv\Scripts\activate.bat
```

{% endcode %}

* **On Mac**:

```
source mitoenv/bin/activate
```

Launch JupyterLab

```
jupyter lab
```

Then either create a new mitosheet or rerun an existing mitosheet.sheet() call
{% endtab %}

{% tab title="Anaconda Navigator" %}

1. Open Anaconda Navigator
2. Click on the `Home` button
3. Select your Mito environment

<figure><img src="/files/pMo953YEWm6CtN2JRyKv" alt=""><figcaption></figcaption></figure>

4. Find the `JupyterLab` title and press `Launch`
   {% endtab %}

{% tab title="Conda Virtual Environment" %}
Activate your environment

```
conda activate mitoenv
```

Launch Jupyter Lab

```
jupyter lab
```

Then, follow these instructionst to [create a new mitosheet](/how-to/creating-a-mitosheet.md).&#x20;
{% endtab %}
{% endtabs %}


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```
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```

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