Do you use SolidWorks without paying subscription fees? Then you may want to read this.

Do you use SolidWorks and pay subscription fees? Then  you may want to read this.

SolidWorks To Customers: You Are Not  Entitled to Service Packs

"

SolidWorks 2010 SP3.0 Customer  Experience

For customers with current subscription  this change should be transparent and they should experience no  difference in behavior when installing a new service pack on an entitled  version of SolidWorks. If a customer without a current subscription  service contract has obtained 2010 SP3.0 or later installation files,  they will be clearly warned that they are not entitled to the service  pack, but will still be able to apply SP3.0.

Customers reporting this warning  in 2010 SP3.0
Customers reporting this message with SolidWorks 2010 SP3.0 or higher  should be referred to their SolidWorks reseller to purchase or renew  their subscription service contract.

If a customer with a current valid  subscription service contract receives this warning message in error  they should report this to their reseller to forward to SolidWorks  Customer Center as a Service Request to ensure immediate resolution.

2010 SP4.0 and beyond

The release of SolidWorks 2010 SP4.0 and  later will block the service pack installation if the customer is not on  subscription at the time they attempt to apply the service pack.

"