If using a local license file (license.lic or similar):
If none of the above works, gather this info before calling support:
Contact Gerber Technology’s support portal or your local distributor.
Before fixing the issue, it helps to understand why it happens:
Once resolved, take proactive steps to avoid recurrence:
Navigate to the license file location. Typically:
Open the file in Notepad. Look for:
If the file is missing, restore from a backup or request a new license file from Gerber or your reseller. a valid accumark license was not found for this product
Go to System Properties → Environment Variables → Look for:
Make sure they point to the correct server or file path. Delete obsolete or conflicting entries.
The error "A valid AccuMark license was not found for this product" is a security feature designed to prevent unauthorized usage. However, in valid user environments, it is most commonly triggered by network interruptions or hardware changes. By isolating the failure point to either the Service, the Network, or the File, administrators can restore functionality without significant downtime.
Keywords: Gerber AccuMark, FlexNet Error, License Manager, HostID, CAD Software Troubleshooting.
"A valid AccuMark license was not found for this product" is a common technical hurdle for users of the Gerber AccuMark pattern-making software suite. It typically occurs when the software's security system cannot verify the required credentials via a physical hardware key (dongle), a local license file, or a network-based subscription. Common Causes & Troubleshooting Steps
If you encounter this message, the following factors are likely responsible: Missing or Unrecognized Hardware Key (Dongle)
: For many versions of AccuMark, a physical USB security key must be plugged into the computer. Check the hardware If using a local license file ( license
: Ensure the USB key is firmly attached and that its indicator light is on. Direct Connection
: Avoid using USB-to-parallel adapters or hubs, as these often fail to communicate with the security key properly. Missing License File
: Even with a dongle, the software requires a matching license file unique to that specific key. File Location : Verify that the license file (often named ) is present in the correct directory, typically
C:\Program Files\Common Files\Gerber Technology\GT License Manager Network and Server Issues
: If your organization uses concurrent or network licensing, the workstation must be able to "reach" the license server. Server Connectivity
: Ensure the license server is online and that your workstation is correctly configured to point to it. System Clock
: Mismatched dates between the server and the local machine can cause security authentication to fail. Operating System & Service Conflicts Contact Gerber Technology’s support portal or your local
: Recent Windows updates or anti-virus software may interfere with the licensing services. Administrator Rights
: You must have administrator privileges to install and properly register the licensing components. Recent Updates
: If the error appeared suddenly after an update, check your Windows Update history or verify if security software has quarantined essential AccuMark files. Modern Licensing Alternatives For newer versions (v13.2 and above), Gerber Technology has introduced Gerber User Licensing
, which uses email-based authentication instead of physical dongles. This system requires an active internet connection to validate the license against a user's account. to a different computer or more about upgrading to a subscription AccuMark V.14.0 Release Notes - Lectra
This error typically appears when starting a Gerber AccuMark product (like AccuMark Explorer, Pattern Design, or Marker Making) and the license server cannot be reached or the license is missing/invalid.
Here’s a solid troubleshooting guide:
AccuMark uses LSHOST or LSHOST_FILE variable to find the license server.