License.xml ^new^ - Launchbox

Understanding the LaunchBox License File (`license.xml`)

For users of LaunchBox, the popular emulation frontend for Windows, the license.xml file is a critical component that bridges the gap between the free version of the software and the premium features. While the software itself is functional without a license, power users often seek out the Premium or Premium Forever licenses to unlock advanced features like Big Box mode, controller automation, and custom startup screens.

Here is a detailed look at what this file is, how it functions, and how to manage it effectively.

Q2: My license.xml works in Big Box but not in LaunchBox. Why?

A: This is impossible—they share the same file. Restart both applications. If the issue persists, your license.xml may be an old Big Box-only license (before the products merged). Update via your account page.

Error 2: Access Denied / Cannot Save License

Symptoms: When you try to activate, LaunchBox says "Access Denied" or "Cannot write license file."

Why it happens: Windows permissions. You installed LaunchBox in C:\Program Files (x86)\, which is a protected folder. launchbox license.xml

Fix:

Option A (Best): Move your entire LaunchBox folder to C:\Users\[You]\LaunchBox or C:\LaunchBox. Because LaunchBox is portable, you can just drag and drop the folder.
Option B: Run LaunchBox as Administrator once (Right-click → Run as Administrator), then activate the license. Future runs can be normal.
Option C: Give your user account Full Control over the LaunchBox folder (Properties → Security → Edit → Allow Full Control).

Error 1: "License Invalid" After a LaunchBox Update

Symptoms: You updated LaunchBox to a new beta or stable version, and suddenly it says your license is invalid or reverts to Free.

Why it happens:

Sometimes the update script fails to read the existing License.xml.
You installed the update to a different folder (e.g., LaunchBox_Backup instead of LaunchBox).
The new version introduced a stricter validation check.

Fix:

Close LaunchBox.
Navigate to your LaunchBox folder.
Locate License.xml. Right-click → Properties. Ensure it is not set to "Read-only".
Cut the License.xml file and paste it to your Desktop (temporarily).
Launch LaunchBox (it will now be Free). Re-enter your email and key via Help → License.
This generates a fresh License.xml. Compare the file sizes. The new one is likely correct.

Moving LaunchBox to a New PC or Hard Drive (License.xml Transfer)

Because LaunchBox is portable, transferring the license is simple—but watch for pitfalls.

III. File Management: Location, Placement, and Migration

The location of License.xml is deterministic and crucial. It must reside in the root folder of the LaunchBox installation (e.g., C:\LaunchBox\License.xml). It cannot be placed in subfolders like LaunchBox\Core\ or LaunchBox\Metadata\.

Placement: The file is typically generated in one of two ways:

Post-Purchase Login: After purchasing, the user enters their email and license key within the LaunchBox application. Upon successful online validation, LaunchBox creates the License.xml file in the root directory.
Manual Download: From the LaunchBox website's "My Licenses" page, a user can manually download their License.xml file and place it in the root folder.

Migration: The license is per-user, not per-machine. This portability is a strength. To move a licensed installation to a new computer, a user can simply: Understanding the LaunchBox License File ( license

Copy the entire LaunchBox folder (a portable install), including License.xml, to the new machine. LaunchBox will run as Premium immediately.
Or, perform a fresh install on the new PC and copy only the License.xml file from the old installation into the new root folder.

Crucially, there is no hard limit on the number of simultaneous installs, but the license is intended for personal use on a reasonable number of machines owned by the licensee (e.g., desktop, laptop, arcade cabinet).

How to Get a Lost License.xml if You Deleted Your Email

If you have lost both the file and the email receipt, do not panic.

Go to the LaunchBox Account Recovery page: https://www.launchbox-app.com/account/lost
Enter your email address (must match the purchase).
If the system finds an order, they will resend the license link instantly.
Still no luck? Contact support via the LaunchBox Forums or email support@launchbox-app.com. Provide your PayPal transaction ID or credit card last 4 digits.

Note: Free licenses (from giveaways / beta tests) often do not have account records. Keep those files safe offline.