In csgo, it is a common problem that vac (verification code) cannot be verified. Typically, this is because a firewall is blocking the request or some critical files for the game are missing. In order to solve this problem, there are several methods to choose from, let’s read on to get more information!
1. Open the computer's control panel, click Windows Firewall, click the Enable or Close Firewall option, turn off the firewall, and confirm;
2. If this still doesn't work, you can try to verify the integrity of the game. Open steam, right-click csgo in the library, enter the properties option, click the file option, and verify the integrity of the game.