# License Invalidation Tool

For hardware-locked licenses, use the License Invalidation Tool to invalidate a license on one machine before moving the licensed installation to another machine.

# Create and use an invalidation tool

1. Load the .NET Reactor project associated with the license.
2. Open the License Invalidation Tool.
3. Click Create Invalidation Tool to generate an executable.
4. Have the customer run the executable on the machine whose license must be invalidated.
5. Obtain the confirmation key generated on that machine.

# Related topics

Check a confirmation code with License.dll · License Reactivation Tool