If you are using a network license, you need to refresh the server to pull the latest subscription dates. SolidNetWork License Manager Server on your server machine. Server Administration tab and click Activate/Reactivate your product license(s) , and follow the wizard to completion. Once activated, click to restart the server. SolidWorks Blog 2. Terminate Background Processes
With the steps outlined in this guide, you can return to designing and modeling without this disruptive error blocking your workflow.
If you’ve exhausted all solutions and the (-8,544,0) error persists, reach out to official support:
Client-side troubleshooting:
: Restart the computer and try launching SOLIDWORKS again.
: Click "Open Services" at the bottom of the Task Manager window, or press Windows key + R and type services.msc .
If the standard reactivation fails, try a more thorough reset by deactivating and then reactivating the license. If you are using a network license, you
: Residual license configurations, corrupt installation paths, or broken activation files block validation.
, and follow the prompts. This clears the "bad" key information. Reactivate again and select Activate/Reactivate your product license(s) . Complete the activation process. on the Server Administration tab to restart the service. Hawk Ridge Systems For Standalone Licenses Refresh Activation : Open SOLIDWORKS (if possible), go to the menu, and select Activate Licenses
Go back to the tab and click Start to restart the licensing system. Method 2: Configure Network Ports and Windows Firewall Once activated, click to restart the server
Ensure the client machine is looking at the correct server address.
Verify that the port numbers (default: 25734 and 25735) are added to the Windows Firewall allowed programs. Summary of Solutions Potential Cause Reactivate in SNL Manager Network Blocked Open ports 25734/25735 in firewall Server/Client Mismatch Verify Port@Server address Old Manager Version Upgrade SNL Manager to 2020+
By renaming these registry keys, you are effectively hiding old network license pointers from SOLIDWORKS, forcing it to use the correct settings (like a newly configured standalone license). If you’ve exhausted all solutions and the (-8,544,0)
(and other versions) when there is a mismatch or expiration in the license data, particularly for add-ons like SOLIDWORKS CAM SolidWorks Blog Most Common Causes Outdated Subscription Data: