https://community.graphisoft.com/t5/Installation-update/protection-key/m-p/17158#M2113 We have/had this problem a lot in the office. We usually have to restart our server and that seems to clear it. Thats if you are working off a server. If not make sure the key is in properly!! <BR /> <BR /> Good luck Tue, 19 Jul 2005 11:37:36 GMT Anonymous 2005-07-19T11:37:36Z https://community.graphisoft.com/t5/Installation-update/protection-key/m-p/17157#M2112 <DIV class="actalk-migrated-content"><R>pls help me bout this thing...i already upgrade my archicad 9 to 2045 build...then the error is [protection key is missing or invalid 1050017]<BR /> <BR /> pls help me bout this <IMG src="https://community.graphisoft.com/legacyfs/online/emojis/icon_cry.gif" style="display : inline;" /> <IMG src="https://community.graphisoft.com/legacyfs/online/emojis/icon_question.gif" style="display : inline;" /></R></DIV> Tue, 19 Jul 2005 05:45:08 GMT https://community.graphisoft.com/t5/Installation-update/protection-key/m-p/17157#M2112 Anonymous 2005-07-19T05:45:08Z https://community.graphisoft.com/t5/Installation-update/protection-key/m-p/17158#M2113 We have/had this problem a lot in the office. We usually have to restart our server and that seems to clear it. Thats if you are working off a server. If not make sure the key is in properly!! <BR /> <BR /> Good luck Tue, 19 Jul 2005 11:37:36 GMT https://community.graphisoft.com/t5/Installation-update/protection-key/m-p/17158#M2113 Anonymous 2005-07-19T11:37:36Z