I didn't received any license file for Talend big data integration sandbox.Received a welcome message in my official email id with subject "Your Big Data Sandbox 30-Day Trial Is Confirmed"
I downloaded the sandbox from following URL "https://info.talend.com/sandboxcloudera.html"
Your download should include a license for a 30-day trial. Which download option did select? Did you download Talend_63-BigData_Sandbox_17-vmware-win-dlm.exe? If so, can you execute your .exe file successfully?