Trial License Issues Arising from MAC Address Linkage

System specifications:

• Windows 10

• GraphPad, which requires a trial key for activation

The core issue stems from GraphPad’s mechanism of binding trial licenses to the MAC address. When a Fresh Start machine is cloned, it typically retains the same MAC address. While this is usually harmless, in this context, the application flags the license as already used because it was activated on a previously cloned instance. This error persists even if the machine is located on a different server, in another data center, or even on a different continent. 

To resolve this, the MAC address must be modified. This process is straightforward and well-documented in Linux environments, though it presents more complexity in Windows. 

Adjusting the MAC address within Windows using standard methods will not suffice, as the machine's qemu.conf file overrides internal changes. Consequently, changing the MAC address in Windows 10 alone is ineffective. 

This occurs because the qemu.conf file defines a specific MAC address for the virtual machine. Modifying this entry allows for a new MAC address assignment, thereby enabling the use of a distinct license key. 

For this solution to be effective, 'Network Isolation' on each machine must be set to 'Disabled', which ensures that the MAC address specified in the qemu.conf file is utilized. 

Please speak to DaDesktop Support for assistance if you encounter this problem.