Invalid: -inconsistent- License Key --8 544 0- Solidworks 2020
If the licensing service fails to start or the error persists, reinstalling the service using the included batch files can often resolve deeper configuration problems.
: Standard add-ins like SOLIDWORKS CAM often trigger this error if your maintenance subscription has expired, even if the base CAD license is still active.
If your company's active subscription has expired, you may lose access to specific products like SOLIDWORKS CAM.
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: Firewalls may block communication on ports 25734 or 25735 , leading to an "inconsistent" status because the key cannot be verified against the server.
Once the reactivation process confirms success, return to the tab. Click Start to resume the licensing service.
SolidWorks 2020
This error message is displayed by the FlexNet licensing system that SOLIDWORKS uses. It indicates that the software is trying to check out a license but encounters a “key” that is invalid or doesn’t match the expected records. The specific code -8 almost universally signifies an “Invalid (inconsistent) license key” within the FlexNet ecosystem.
This analysis is based on known behaviors of FlexNet Publisher v11.16 used in SolidWorks 2020. For a legitimate license, contacting your VAR (Value Added Reseller) for a new activation key is required.
If none of the above steps work, consider these less common scenarios. If the licensing service fails to start or
If you are using a standalone license, the problem is isolated to your specific machine. Follow these steps in order.
: Copy the entire contents of this Program Files folder to your system clipboard.
If you recently changed the server hardware, replaced a network card, or migrated your virtual machine, your system's Host ID (MAC address) has likely changed. Because SolidWorks licenses are locked to a specific Host ID or USB dongle, a hardware change makes the existing key "inconsistent." : : Firewalls may block communication on ports
The serial number used for installation does not perfectly match the 2020 version, or it was activated with a different license file.
If your organization uses a network license, the error usually means the license manager needs to be refreshed to recognize a renewed subscription. Computer Aided Technology Stop the License Service : Open the SolidNetWork License Manager Server on your license server. Go to the Server Administration tab and click Deactivate Old Info , select the option to Move your product license(s) to a new or upgraded computer
