, and follow the on-screen wizard to update your maintenance end dates. Once finished, click
The following solutions are divided based on your license type. It's recommended to start with the simplest fixes and proceed to more complex ones if the problem persists.
Put simply, the error message is telling you that SOLIDWORKS cannot verify your license because the information it has is either wrong, incomplete, or corrupted.
Installing a SOLIDWORKS 2020 service pack (e.g., SP3 over SP1) without a clean uninstall can leave behind old licensing DLLs that conflict with new ones.
Sometimes, the license manager is locked by a hanging process. Right-click the Taskbar and select . Go to the Details tab. , and follow the on-screen wizard to update
To resolve the "Invalid (inconsistent) license key (-8, 544, 0)" error in SOLIDWORKS 2020, you typically need to
WARNING: This method requires re-authenticating your software. Ensure your original 24-digit serial number is available before proceeding. How to Fix SolidWorks Invalid License Key Error
Several factors can cause the "Invalid Inconsistent License Key" error:
The fastest way to fix the error is to move and reactivate your product licenses within the SOLIDWORKS SolidNetWork License (SNL) Manager. This process completely purges cached, corrupted license information from the server and pulls down a fresh, validated validation certificate from the official servers. Put simply, the error message is telling you
: Search for and launch the SolidNetWork License Manager Server .
the license manager has outdated subscription information or the licensing components (daemon, license file, and application) have a mismatch in their encryption "seeds" MLC CAD Systems Recommended Troubleshooting Steps Reactivate Your License (Recommended First Step)
: Ensure the vendor daemon is running. If it's down, you can reset it by running the license server setup as an administrator.
. This issue commonly impacts SOLIDWORKS 2020 users following a subscription lapse, an incomplete upgrade path, or misconfigured licensing components after an installation. Right-click the Taskbar and select
Delete all remaining SolidWorks files from C:\Program Files\SolidCorp and C:\ProgramData\SOLIDWORKS . Restart your computer.
The "-8,544,0" error is rarely a sign of a "bad" installation. Instead, it typically points to one of the following common, fixable issues:
Locate the License Information section and click the (or Reactivate ) button.