Si has realizado todos los pasos de la guía XFORCE tanto en Mac como Windows pero te indica que la licencia no es válida, entonces debes bloquear los hosts de AutoDesk (Tanto en Windows como en Mac).

Como bloquear hosts en Mac:

https://www.artistapirata.com/bloquear-hosts-en-mac-de-forma-correcta/

Como bloquear hosts en Windows:

https://www.artistapirata.com/guia-ultra-detallada-para-editar-archivo-hosts-windows/

Copia y pega lo siguiente en el archivo hosts.

# Block Autodesk AutoCAD Servers
#
0.0.0.0 autodesk.fi 
0.0.0.0 autodesk.de
0.0.0.0 autodesk.es
0.0.0.0 autodesk.ca
0.0.0.0 autodesk.dk
0.0.0.0 autodesk.pl
0.0.0.0 ns1.autodesk.com
0.0.0.0 ns2.autodesk.com
0.0.0.0 ns3.autodesk.com
0.0.0.0 a.gtld-servers.net
0.0.0.0 b.gtld-servers.net
0.0.0.0 c.gtld-servers.net
0.0.0.0 d.gtld-servers.net
0.0.0.0 e.gtld-servers.net
0.0.0.0 f.gtld-servers.net
0.0.0.0 g.gtld-servers.net
0.0.0.0 h.gtld-servers.net
0.0.0.0 i.gtld-servers.net
0.0.0.0 j.gtld-servers.net
0.0.0.0 k.gtld-servers.net
0.0.0.0 l.gtld-servers.net
0.0.0.0 ns1.autodesk.com
0.0.0.0 m.gtld-servers.net
0.0.0.0 adobeereg.com
0.0.0.0 126114-app1.autodesk.com
0.0.0.0 94175-app1.autodesk.com
0.0.0.0 94184-app2.autodesk.com
0.0.0.0 96579-lbal1.autodesk.com
0.0.0.0 acamp.autodesk.com
0.0.0.0 adeskdi3.autodesk.com
0.0.0.0 adeskdmzpdc.autodesk.com
0.0.0.0 adeskgate.autodesk.com
0.0.0.0 adesknews2.autodesk.com
0.0.0.0 adeskout.autodesk.com
0.0.0.0 adsknateur.autodesk.com
0.0.0.0 amernetlog.autodesk.com
0.0.0.0 app5.autodesk.com
0.0.0.0 aprimo-relay1.autodesk.com
0.0.0.0 aprimo-relay2.autodesk.com
0.0.0.0 aprimo-relay3.autodesk.com
0.0.0.0 aprimo-relay4.autodesk.com
0.0.0.0 autosketch.autodesk.com
0.0.0.0 blues.autodesk.com
0.0.0.0 cbuanprd.autodesk.com
0.0.0.0 cbuanprhcllb.autodesk.com
0.0.0.0 cbuanqa2lb.autodesk.com
0.0.0.0 ci3dwsdev-svc.autodesk.com
0.0.0.0 ci3dwsprd-svc.autodesk.com
0.0.0.0 ci3dwsstg-svc.autodesk.com
0.0.0.0 community.autodesk.com
0.0.0.0 cut.autodesk.com
0.0.0.0 cvsprd01.autodesk.com
0.0.0.0 discussion.autodesk.com
0.0.0.0 eur.autodesk.com
0.0.0.0 extcidev.autodesk.com
0.0.0.0 extciqa.autodesk.com
0.0.0.0 extupg.autodesk.com
0.0.0.0 ftp-users.autodesk.com
0.0.0.0 ftp2b.autodesk.com
0.0.0.0 gisdmzpdc.autodesk.com
0.0.0.0 hqaribasrf04.autodesk.com
0.0.0.0 hqmgwww01.autodesk.com
0.0.0.0 hqmgwww04.autodesk.com
0.0.0.0 hqmobileweb01.autodesk.com
0.0.0.0 hqprxsrftrn.autodesk.com
0.0.0.0 hqpsweb01.autodesk.com
0.0.0.0 hubdev-svc.autodesk.com
0.0.0.0 hubprd-svc.autodesk.com
0.0.0.0 hubstg-svc.autodesk.com
0.0.0.0 itappprd01-svc.autodesk.com
0.0.0.0 itappprd02-svc.autodesk.com
0.0.0.0 its.autodesk.com
0.0.0.0 jdevextv-new.autodesk.com
0.0.0.0 jp.autodesk.com
0.0.0.0 jstgextv-new.autodesk.com
0.0.0.0 jstgintv-new.autodesk.com
0.0.0.0 lbsvzw.autodesk.com
0.0.0.0 lbsvzw1.autodesk.com
0.0.0.0 lbsvzw2.autodesk.com
0.0.0.0 library.autodesk.com
0.0.0.0 liveupdate.autodesk.com
0.0.0.0 locationservices.autodesk.com
0.0.0.0 lsctsol04.autodesk.com
0.0.0.0 mail-relay.autodesk.com
0.0.0.0 mneprdext-svc.autodesk.com
0.0.0.0 mut.autodesk.com
0.0.0.0 nbugma-dmz.autodesk.com
0.0.0.0 ns1.autodesk.com
0.0.0.0 ns2.autodesk.com
0.0.0.0 ns3.autodesk.com
0.0.0.0 ns4.autodesk.com
0.0.0.0 ns5.autodesk.com
0.0.0.0 nut.autodesk.com
0.0.0.0 otw-new.autodesk.com
0.0.0.0 otwdownloads.autodesk.com
0.0.0.0 partnercenter.autodesk.com
0.0.0.0 partnerproducts.autodesk.com
0.0.0.0 paste.autodesk.com
0.0.0.0 pedidrq.autodesk.com
0.0.0.0 pediqrx.autodesk.com
0.0.0.0 petars1.autodesk.com
0.0.0.0 petcp11ia-2nat.autodesk.com
0.0.0.0 petcr12ihsrp2.autodesk.com
0.0.0.0 phxgciv.autodesk.com
0.0.0.0 phxgciv_dr.autodesk.com
0.0.0.0 planix3d.autodesk.com
0.0.0.0 pointa.autodesk.com
0.0.0.0 register.autodesk.com
0.0.0.0 registerallied-pr.autodesk.com
0.0.0.0 registeronce.autodesk.com
0.0.0.0 salestraining.autodesk.com
0.0.0.0 searchnews.autodesk.com
0.0.0.0 shop.autodesk.com
0.0.0.0 spamster-bulk.autodesk.com
0.0.0.0 sswwwp.autodesk.com
0.0.0.0 trialdownload.autodesk.com
0.0.0.0 usa.autodesk.com
0.0.0.0 uspetcr12ie_198.autodesk.com
0.0.0.0 uspetcr12if.autodesk.com
0.0.0.0 uspetcr12if_198.autodesk.com
0.0.0.0 uspetcrs12ia_ib_vlan500_2_hsrp.autodesk.com
0.0.0.0 uspetcrs12ia_vlan500_2.autodesk.com
0.0.0.0 uspetcrs12ib_vlan500_2.autodesk.com
0.0.0.0 uspetne06ia_ib_untrust_dip7.autodesk.com
0.0.0.0 usrelay.autodesk.com
0.0.0.0 ussclout1.autodesk.com
0.0.0.0 vzwlpsrel.autodesk.com
0.0.0.0 vzwlpstst.autodesk.com
0.0.0.0 web.autodesk.com
0.0.0.0 webservices.autodesk.com
0.0.0.0 wormhole.autodesk.com
0.0.0.0 www.autodesk.com
0.0.0.0 www3.autodesk.com
#