NX Invalid hostID cannot start NX (server_id feature: -9)

NX does not start after using a Trail license via Discovery Center.

Error message is:

Invalid host. The hostid of this system does not match the hostid specified in the license file.

NXLogfile:
error with server_id feature: -9
+++ Licensing Toolkit error -- code == -9 [Invalid host.]

This can be resolved by clearing or deleting the folder nxsl at %localappdata%\siemens  (e.g. C:\Users\<os-user>\AppData\Local\Siemens\nxsl).

The nxsl folder will be automatically recreated after NX is started.