> For the complete documentation index, see [llms.txt](https://docs.parallels.com/landing/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.parallels.com/landing/pdfm-ug/v20-en-us/parallels-desktop-for-mac-20-users-guide/use-windows-on-your-mac/protecting-your-data/working-in-windows-without-saving-changes.md).

# Working in Windows without Saving Changes

If you don't want Windows to store the changes you make to it during the working session (for example, when testing some Windows applications that may damage Windows), you can start Windows in Rollback Mode:

{% hint style="info" %}
**Note:** This feature is only available in Parallels Desktop for Mac Pro and Business Editions.
{% endhint %}

1. Open Parallels Desktop.
2. From the **Control Center,** select the Windows machine that you want to start in Rollback Mode and click **Actions** > **Start in Rollback Mode**.

### Set Windows to Always Start in Rollback Mode

If you want Windows to always start in Rollback Mode:

1. Open Parallels Desktop.
2. From the **Control Center,** select Windows and click **Actions** > **Configure** > **Security**.
3. Choose **Ask me what to do** from the **Rollback Mode** menu.


---

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