Server-side checks
Click (or "Modify" for older versions) to refresh the license with the SolidWorks server. 4. Delete the FLEXnet Folder (Most Common Fix)
: Occasionally, local license files become corrupted or "stuck," preventing the client machine from communicating correctly with the SolidNetWork License (SNL) manager. Strategic Resolutions
Select and follow the prompts to complete the process. Server-side checks Click (or "Modify" for older versions)
The happens when your computer cannot verify your software license. This issue usually appears right after you install the program or when your annual maintenance contract expires. It stops the software from opening and displays a warning that it could not obtain a license.
Using cracked keygens, patchers, or unauthorized license keys will trigger inconsistent license errors and violate SolidWorks licensing terms. The only supported fix is a valid, properly installed license from an authorized source.
: The server software needs a quick refresh to see your new expiration date. Strategic Resolutions Select and follow the prompts to
This comprehensive guide delves into why this error occurs and provides a complete, step-by-step walkthrough of every known method to resolve it.
Select and click Next. Follow the prompts to reactivate the license. 2. Re-point Client to the License Server
Understanding what triggers this error helps determine which solution applies. Based on analysis of over 50 cases, the most common causes include: It stops the software from opening and displays
Start with the simplest fix: restart the SolidWorks Flexnet Server service. If that doesn’t work, clear the FlexNet cache, re‑register the service, or reinstall the license components. For network environments, refreshing the SolidNetWork License Manager is the key.
Open the SNL Manager Server and look at the or Host ID section.
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."
"Invalid (inconsistent) license key (-8, 544, 0)" in SOLIDWORKS 2020