The interface shows "License is not valid". https://dlt-acc.firelay.cloud/c/message_boards/find_thread?p_l_id=3231581&threadId=4545197 2026-05-15T15:07:51Z 2026-05-15T15:07:51Z Eka Mulyawati https://dlt-acc.firelay.cloud/c/message_boards/find_message?p_l_id=3231581&messageId=4616336 2021-11-03T05:17:36Z 2021-11-03T05:17:36Z

Hi. I have once had that problem. I think you should renew your license. Get the new one by filling the Request form for Delft3D Graphical User Interface. You will get the new license after 5 days work.  I hope it can solve the problem.

Eka Mulyawati 2021-11-03T05:17:36Z Tjitske Geertsema https://dlt-acc.firelay.cloud/c/message_boards/find_message?p_l_id=3231581&messageId=4604027 2021-10-29T07:16:13Z 2021-10-29T07:16:13Z

Dear sir, madam,<br /><br />For these license issues, you can best contact delft3d.support@deltares.nl or software.support@deltares.nl.<br /><br />Best regards,<br />Tjitske

Tjitske Geertsema 2021-10-29T07:16:13Z Wenning Sun https://dlt-acc.firelay.cloud/c/message_boards/find_message?p_l_id=3231581&messageId=4545196 2021-10-07T16:41:37Z 2021-10-07T16:41:37Z

I have installed the license file but I couldn&#39;t open the” Delft3D 4.04.02” on the desktop after the installation was complete. When I open the &#34; Delft3D 4.04.02&#34;, the interface shows &#34;License is not valid&#34;.

Wenning Sun 2021-10-07T16:41:37Z