If you have access to the old installation or remember your account details:
Step 1: Remove the license from the old machine Log into the old RouterOS via WinBox or SSH. Navigate to System > License. Click "Renew License" – wait. If that fails, click "Sell License" (this does not sell it; it unbinds it from the hardware). You just need the license to show "Not Registered."
Step 2: Log into MikroTik Account Go to account.mikrotik.com. Go to "Licenses" -> "My Licenses". mikrotik change software id link
Step 3: Unbind (Release) the License Find the license you want to move. If it still shows the old Software ID, click "Release" or "Unbind." The license will now appear as "Free / Unused."
Step 4: Bind to the new Software ID On the new RouterOS machine, go to System > License. Click "Register" or "Renew License." Enter your MikroTik username and password. The system will automatically pull the available license and bind it to the current Software ID (the new one). If you have access to the old installation
Result: The license is now linked to the new Software ID.
/system identity set name="NewRouterName"
/system reboot
After reboot, check the new Software ID: After reboot, check the new Software ID: /system
/system license print
If you have a new router and want to move your paid license to it, you must use the MikroTik Account Server. MikroTik allows license transfers only a limited number of times (typically twice per key).
Here is the proper procedure: