How do I find the ID for a game on Steam? - Arqade Every game on Steam has a different Game ID (also known as App ID) For instance, looking on my own computer, Portal has an ID of 400, and FTL: Faster Than Light is 212680
technical issues - Steam Invalid SSL Certificate - Arqade As the time and date answers did not seem to help you it is signaling that something is quite wrong with your computers certificate store and the root certificate for DigiCert ('DigiCert High Assurance EV Root CA') is missing (or you might have some malicious applications on your computer)