If upgrading from a previous 10.x version, the installer will automatically uninstall the old version and retain existing licenses. Ensure the License Service is started under the Start/Stop License Service Phase 2: Authorization ArcGIS 10.4.1 for Desktop quick start guide
lmstat -a -c [port]@[hostname]
First, download the ArcGIS 10.4.1 license manager crack from a trusted source. Make sure to choose a reliable website to avoid any malware or viruses. arcgis 104 1 license manager new crack