Invalid -inconsistent- License Key --8 544 0- Solidworks 2020 ^hot^ Jun 2026

Choose "Automatically over the internet" and complete the activation.

Was any or was the server recently migrated?

SOLIDWORKS licenses, especially from 2019 onwards, require annual reactivation.

: Ensure the SolidWorks Licensing Service is set to "Automatic" in Windows Services ( services.msc ) to prevent connection timeouts.

The serial number used for installation does not perfectly match the 2020 version, or it was activated with a different license file. Choose "Automatically over the internet" and complete the

The server’s activation data has become corrupted or needs a "refresh" to acknowledge current entitlement dates. How to Fix It

To avoid encountering licensing issues in the future:

If you recently upgraded to , ensure the license manager on the server has also been upgraded to the 2020 version (or later).

Patience and a systematic strategy will almost always restore full functionality. With your software back up and running, you can return to what matters most: designing, modeling, and creating without interruption. : Ensure the SolidWorks Licensing Service is set

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

Check the string values to ensure the serial number matches your 2020 network serial number exactly.

If you are using a standalone license, the problem is isolated to your specific machine. Follow these steps in order.

If you have tried upgrading the server, reactivating the licenses, and clearing the FLEXnet data cache but still face the error, the issue likely stems from a backend mismatch in your corporate entitlement. At this stage, your best course of action is to contact your SolidWorks Value Added Reseller (VAR) with your server log files for immediate technical support. To help narrow down the issue, let me know: How to Fix It To avoid encountering licensing

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+

: The server hosting your network license has cached expiration information that does not match the actual status of your serial key.

: Click Modify , select "Activate/Reactivate your product license(s)" , and follow the on-screen prompts.