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DaDesktop

Issues with Trial Licence when linked to a MAC address

Machine details:

The issue stems from GraphPad linking trial usage to a MAC address. When the Fresh Start machine is cloned, it typically inherits the same MAC address. Normally that wouldn't be a problem, but here the application reports the licence has already been consumed—because it was used on a previous clone. Even if the machine is located on a different server or in a data centre on another continent, you'll still see this error. 

To work around this, change the MAC address. On Linux this is straightforward and well documented, but on Windows it's less so.

Changing the MAC address from within Windows using the usual recommended methods won't work, because the machine's qemu.conf file will override any MAC change made inside the OS. So while you can modify the MAC address in Windows 10, on its own that still won't resolve the problem.

That's because the qemu.conf file contains a configured MAC address. If you alter this address, you'll get a different MAC, allowing a different licence key to be used. 

For this to take effect, however, you need to set 'Network Isolation' to 'Disabled' on each machine. Once that's done, the MAC address specified in qemu.conf will be applied.

If you run into this issue, please contact DaDesktop Support for help.