> 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/pd-ag/parallels-desktop-licensing-guide/managing-subscriptions-licences-and-seats/blacklisting-a-specific-computer.md).
# Blacklisting a Specific Computer
Blacklisting a computer deactivates Parallels Desktop on it and makes re-activation using the same license key impossible. To re-active Parallels Desktop on a blacklisted computer, the user will need to use a different license key. You (the administrator) can remove the computer from the blacklist at any time, in which case the same license key can be used again.
Navigate to **Dashboard** > **Registered computers** (the link can be found on the product card for your Parallels Desktop Business or Enterprise Edition). To blacklist a computer, in the main computer list, select one or more computers (select a checkbox in the first column), then click the **Actions** drop-down menu and choose **Add to Blacklist**.
Blacklisted computers will be marked as such in the **Status** column.
To remove one or more computers from the blacklist, select the computer(s) and click **Actions** > **Remove from Blacklist**. After that, such computers will be listed as `Deactivated` and can be reactivated separately.
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