By following these steps, you should be able to resolve the inconsistent license error in SolidWorks 2020 and restore functionality. If you are still seeing this error, could you tell me: Are you using a ? Did this happen after a Windows update ? Are you using the 2020 SP0 or a later service pack?

The error in SOLIDWORKS 2020 is a complex but ultimately fixable licensing issue. In 80% of cases, clearing the FLEXnet cache (Step 2) resolves it. For persistent cases, especially those involving error 544, the solution lies in addressing Windows security features or corrupted licensing drivers.

Close SOLIDWORKS. Open the Task Manager ( Ctrl + Shift + Esc ). End any tasks named sldworks_fs.exe or SolidWorks Licensing Service . Then, restart your PC.

The "SolidWorks Flexnet Server" (or "SolidWorks Licensing Server") Windows service must be running for the license to be validated.

Both TCP and UDP rules must be explicitly defined in Windows Firewall for SOLIDWORKS to sync perfectly:

The most common culprit for SolidWorks 2020 is an outdated License Manager.

Method 1: Reactivating the SolidNetWork License Manager (Network & Server Fix)

Sometimes, the license key is flagged as "inconsistent" because underlying security changes block certain data packets from traveling smoothly between the server and the client machine. Configure Inbound and Outbound Firewalls

Your heart sinks. Is your license broken? Do you need to reinstall Windows? Take a deep breath.

Fixing Error “Could Not Obtain a License for SOLIDWORKS Standard”

Launch the via the Windows Start menu. Navigate to the Server Administration tab.

Locate the SolidWorks PDM folder and find a file named stored procs or storedrox .