https://community.graphisoft.com/t5/Installation-update/Activation-problem/m-p/223325#M23471 Solved by clean w10 install, re-install ArchiCad, instant activation.<BR /> <BR /> Best,<BR /> John Thu, 31 Aug 2017 09:14:28 GMT Anonymous 2017-08-31T09:14:28Z https://community.graphisoft.com/t5/Installation-update/Activation-problem/m-p/223324#M23470 <DIV class="actalk-migrated-content">Hi,<BR /><BR />21-int will not activate or run. Error:<BR /><BR />"This trial file is invalid on this machine (Or some machine components have been changed since installation). Please reinstall ARCHICAD".<BR /><BR />I registered &amp; downloaded on my laptop, installed on my desktop (W7 UK English only). Can you help?<BR /><BR />Best,<BR />John</DIV> Tue, 19 Mar 2024 11:18:39 GMT https://community.graphisoft.com/t5/Installation-update/Activation-problem/m-p/223324#M23470 Anonymous 2024-03-19T11:18:39Z https://community.graphisoft.com/t5/Installation-update/Activation-problem/m-p/223325#M23471 Solved by clean w10 install, re-install ArchiCad, instant activation.<BR /> <BR /> Best,<BR /> John Thu, 31 Aug 2017 09:14:28 GMT https://community.graphisoft.com/t5/Installation-update/Activation-problem/m-p/223325#M23471 Anonymous 2017-08-31T09:14:28Z