Before assuming you need to buy a new license, verify what CATIA sees:
CATIA looks for a file called DSLicSrv.txt located in the hidden folder C:\ProgramData\DassaultSystemes\Licenses . Ensure this file contains the correct server name and port (usually ServerName:4085 ). The Expiration Date Of Your License Has Arrived Catia
Even if the error pops up, the License Manager window often remains open. View Status: Look at the list of available licenses. Green: More than 30 days until expiration. Orange: Less than 30 days remaining. Red: Already expired. Before assuming you need to buy a new
Your annual or multi-year license term has physically ended. The Expiration Date Of Your License Has Arrived Catia