SDL Studio 2021 SR1 CU8 (8/9/21 release). App no launching.

Downloaded SDL Studio  2021 SR1 CU8 (8/9/21) from our SDL account, and Installed (TradosStudio2021SR1_16.1.8.4404.exe). Now Studio 2021 desktop doesn't launch when double click app. I reinstalled, same problem persisted. I have restarted (as directed) and turned off my PC. No luck. Any help will be appreciated it!

Maria