Lumion 12 Is Being Prevented From Contacting The License Server ((better)) Link

Click the Windows Start menu, type , right-click it, and select Run as administrator .

For professionals using a , Pro License , or Flex License , this error is a notorious roadblock. It prevents Lumion from checking the validity of your subscription, effectively locking you out of saving, exporting, or even using the software.

Click in the left-hand sidebar.

Lumion’s licensing system uses specific ports to communicate. If these ports are blocked by your router or network administrator, the connection fails. Click the Windows Start menu, type , right-click

If you are still experiencing issues, double-check that your internet browser can successfully load standard web pages, and verify with your office IT administrator that port 443 (HTTPS) is fully open on your office router.

Search for in your Start menu, right-click it, and select Run as Administrator . Open the file at: C:\Windows\System32\drivers\etc\hosts . Look for any lines containing the word "lumion" . Delete those lines , save the file, and restart Lumion. 4. Verify Administrative Rights

Type in the Windows search bar and open it. Click in the left-hand sidebar

Lumion.exe within that installation folder.

Open and enter the Virus & threat protection menu.

: In Notepad, go to File > Open . Navigate to the following path: C:\Windows\System32\drivers\etc If you are still experiencing issues, double-check that

To help narrow down the exact cause of this error, could you tell me if this is a or a sudden error on a setup that previously worked? Please AI responses may include mistakes. Learn more Share public link

Malicious software or previous "patches" can sometimes add entries to your Windows hosts file that block Lumion's servers. Search for , right-click it, and select Run as administrator Open the file located at: C:\Windows\System32\drivers\etc\hosts Look for any lines containing the word Delete those lines and the file. (Ensure it saves without a extension). 3. Configure Antivirus and Firewall Exclusions

The error "Lumion 12 is being prevented from contacting the license server" is rarely a true internet failure. It is a between your security software and Lumion’s authentication servers.