AutoCAD Can’t Find License Server?

Troubleshooting the AutoCAD License Server Connection Issue

When AutoCAD cannot locate the license server, it can hinder your ability to use the software effectively. Follow the steps below to identify and resolve this issue.

Step 1: Verify License Server Settings

Start by checking the configurations for your AutoCAD license server:

1. Open AutoCAD:
   Launch your AutoCAD application.

2. Access License Information:
   Navigate to the Help menu and select "About AutoCAD." In the window that appears, find the section labeled "Product License Information."

3. Check License Server Name:
   Ensure that the license server name displayed is correct. If there are discrepancies, verify it matches the server settings provided by your system administrator.

Step 2: Ensure Network Connectivity

A stable network connection is crucial for AutoCAD to communicate with the license server:

1. Ping the License Server:
   Open the command prompt and use the command ping [license server name]. If this fails, it indicates a connectivity issue.

2. Firewall Configuration:
   Check if the firewall on your machine or the license server is restricting access. Make sure that the necessary ports used by AutoCAD for license management are open (typically ports 27000 and 2080).

Step 3: Restart the License Manager

Restarting the license manager could resolve temporary glitches:

1. Access Services:
   Open the Services management console by typing services.msc in the Run dialog box (Windows + R).

2. Locate the License Service:
   Find the "Autodesk Network License Manager" in the list. Right-click on it and select "Restart."

3. Retry AutoCAD:
   Close AutoCAD and reopen it to check if the issue is resolved.

Step 4: Update the FlexNet Licensing Service

An outdated or improperly configured licensing service can lead to connection issues:

1. Check for Updates:
   Visit Autodesk’s official website to download the latest version of the FlexNet Licensing Service compatible with AutoCAD 2025.

2. Install Updates:
   Follow the installation instructions provided on the website to ensure the service is correctly updated.

3. Restart Services Again:
   Repeat the process of restarting the license manager after the update.

Step 5: Review License Configuration File

The license file may require manual adjustments:

1. Locate the License File:
   This file is usually found in the installation directory of the License Manager. It often has a .lic extension.

2. Open the File:
   Use a text editor to open the file and verify that it contains the correct license server details.

3. Edit if Necessary:
   If changes are needed, make sure to save the file and restart the license server again.

Step 6: Contact Support

If problems persist, professional assistance may be necessary:

1. Gather Information:
   Document error messages and your troubleshooting steps to provide a comprehensive overview to support personnel.

2. Reach Out:
   Contact Autodesk Technical Support or your organization’s IT department for further assistance.

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FAQ

1. What should I do if the license server is down?
If the license server is down, check with your network administrator or IT department to confirm if any maintenance or issues are occurring. They can help restart the server or provide updates on its status.

2. Can AutoCAD work offline?
AutoCAD requires a license for software activation, which typically requires an online connection to the license server. However, if you have set up a standalone license, you can use AutoCAD offline as long as the software is activated.

3. How often should I check for updates related to the licensing system?
Regular updates are essential for maintaining software stability. It is advisable to check for updates once a month or whenever a new AutoCAD version is released. Doing so ensures your licensing system remains compatible and free from potential bugs.