> For the complete documentation index, see [llms.txt](https://docs.incogniton.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.incogniton.com/browser-and-browser-profiles/troubleshooting/browser-doesnt-launch.md).
# Browser won't launch
If a browser profile won't open, the browser installation is likely missing or corrupted, and there are 2 ways to fix it. The first option is to **force install** **from inside the app**. If the download fails or the browser still won't launch afterward, there is a second option of **installing the browser files manually**.
### Option 1: Force install from the app
Incogniton can download and reinstall any browser version directly from inside the app, with a progress bar in the install window showing the download status as it runs.
{% stepper %}
{% step %}
**Open Debug tools**
Navigate to **Settings** in the left sidebar of the , then select the **Debug tools** tab.
{% endstep %}
{% step %}
**Select a browser version**
Under **Browser**, find the **Force install/update a specific browser version** section, open the dropdown, and select the version you want to install.
If you're not sure which version to choose, go with the version currently assigned to your profiles, or the latest available version.
{% endstep %}
{% step %}
**Run the installation**
Click **Install / Update** and a modal will appear showing the selected version alongside its changelog. Click **Update now** to start the download, then wait for the progress bar to finish before closing the window.
{% endstep %}
{% step %}
**Test the result**
Once the download finishes, try launching a browser profile to confirm everything is working. If it opens, you're done. If the download fails or the browser still won't launch, move on to Option 2.
{% endstep %}
{% endstepper %}
### Option 2: Manual installation
This option involves downloading the browser files directly and placing them in the correct location on your machine. You'll also need to set a version identifier file that Incogniton uses to recognize the installation.
Start by finding your browser version in the table below. Then note the **VERSION.txt value** and the download link for your platform, you'll use both in the steps that follow.
{% hint style="info" %}
Not sure which Mac chip you have? Click the Apple menu > **About this Mac**. If the Chip field shows Apple M1 or later, choose ARM; if it shows Intel, choose Intel.
{% endhint %}
#### Windows OS
{% stepper %}
{% step %}
**Open the data directory**
Click **Settings** in the left sidebar and select the **Debug tools** tab. Under **Data**, click **Open data directory**, then navigate to `Browser > [your version number] > Win` inside the folder that opens.
Full path:
```
C:\Users\USERNAME\AppData\Roaming\Incogniton\Incogniton\browser\[version]\win
```
{% endstep %}
{% step %}
**Download the browser**
Use the table above to find the download link for your version, then select either the 64-bit or 32-bit file. If you're not sure which applies to your system, 64-bit is correct for most Windows machines. The file downloads as a ZIP named **Update**.
{% endstep %}
{% step %}
**Install the browser files**
Unzip the downloaded file and copy its contents into the Win folder from Step 1. Then check whether `VERSION.txt` exists in that folder. If it doesn't, you'll need to create it:
1. Open a text editor and create a new file.
2. Type the VERSION.txt value for your version from the table above.
3. Save the file as `VERSION.txt` in that same folder.
{% endstep %}
{% step %}
**Test the installation**
Run the `chrome` file inside the folder. If the browser opens successfully, the installation is complete and you can delete the **Update** folder.
{% endstep %}
{% endstepper %}
#### MacOS
{% stepper %}
{% step %}
**Open the data directory**
Click **Settings** in the left sidebar and select the **Debug tools** tab. Under **Data**, click **Open data directory**, then navigate to `Browser > [your version number] > Mac` inside the folder that opens.
Full path:
```
/Users/USERNAME/Library/Application Support/Incogniton/browser/[version]/mac
```
If you can't find the Library folder? Follow this guide: [How to open the Library folder on Mac ↗](https://www.macinstruct.com/tutorials/how-to-open-the-library-folder-on-your-mac/).
{% endstep %}
{% step %}
**Download the browser**
Use the table above to find the download link for your version, choosing **ARM** if your Mac has an Apple Silicon chip (M1 or later) or **Intel** for older Macs. The file downloads as a ZIP named **Update**.
{% hint style="info" %}
ARM builds aren't available for versions 137 and earlier, so use the single Mac download link if you're on one of those versions.
{% endhint %}
{% endstep %}
{% step %}
**Install the browser files**
Unzip the downloaded file and copy its contents into the Mac folder from Step 1. Then check whether `VERSION.txt` exists in that folder. If it doesn't, you'll need to create it:
1. Open a text editor and create a new file.
2. Type the VERSION.txt value for your version from the table above.
3. Save the file as `VERSION.txt` in that same folder.
{% endstep %}
{% step %}
**Test the installation**
Run the `chrome` file inside the folder. If the browser opens successfully, the installation is complete and you can delete the **Update** folder.
{% endstep %}
{% endstepper %}
### Confirm your profile browser version
Once the installation is complete, take a moment to confirm that your profiles are set to the version you just installed. Click the three-dot icon on the profile and select **Edit**. The browser version shown should match the one you just installed.
{% hint style="info" %}
Still having trouble? Contact our [support team](https://incogniton.com/contact/).
{% endhint %}