Autodesk Network License Manager compatibility with IPv6

Issue

When attempting to log on to an Autodesk Vault server from a client workstation, you receive the following error message:

Failed to acquire a license

Solution

This error can occur if the Internet Protocol version 6 (IPv6) component is enabled on your server's operating system.

There are 4 ways to resolve this issue:

Method 1

Disable IPv6 on the system runing the FLEXnet License Manager software. For detailed instructions, refer to the following Microsoft Knowledgebase article:

http://support.microsoft.com/kb/929852/en-us

Method 2

Use the IPv4 IP address of the FLEXnet server in the LICPATH.LIC file:

1. Open Windows Explorer on the computer where you have installed the Autodesk Vault Server.
2. Navigate to the <install path>\Autodesk\ADMS edition 2010\ directory.
3. Using Microsoft Notepad, open the licpath.lic file.
4. On the first line, replace the server name with the IPv4 address of the FLEXnet server.
5. Save the file and close it.

Method 3

To remove the IPv6 Protocol for Windows XP:

1. Log on to the Windows XP computer with a user account that has local administrator privileges.
2. Open a command prompt. From the Windows XP desktop, click Start menu > Run.
3. In the Run dialog box, enter cmd and click OK.
4. On the command line, enter ipv6 uninstall
5. Restart the system.

Method 4

If you must use IPv6 in your network, download and install the IPv6-compatible FLEXnet License Manager:

Autodesk Network License Manager IPv6 Support for Windows