License Mistake

Dear all.

Today, when I run my file in Virtuoso, the dialog appeared: 

(icLic-23) License Virtuoso_Layout_Suite_L ("95300") is not available to run Layout-L. Would you like to try checking out the License Virtuoso_Layout_Suite_XL ("95310") instead?

Normally, I choose Yes, but I made a mistake and chose Never. As a result, I never open any file anytime.

Could you please tell me how to fix this ? I really appreciate your help.

Thank you,

Nguyen N