The vac system was unable to track your gaming activity (Counter-Strike: Global Offensive)
Who had this? How did you decide? There were no vac bans on the account.In general, there are many possible solutions to your problem in Google. But since you are looking for a broke, then ...
Solution # 1.
1.Close the STEAM program.
2. Go to the folder where you have installed STEAM and delete there three files called "Steam.dll" & "SteamUI.dll" & "clientregistry.blob".
3.Run STEAM and check if the error "The VAC system could not verify your gaming session" disappeared.
Solution # 2.
1. Open STEAM, from above click on the "View" -> "Settings" tab.
2. Go to the Downloads tab.
3. At the very bottom, click the "Clear download cache" button.
Solution # 3.
1.Close STEAM and reopen it.
2. At the top left, click on the "Steam" tab and select "Go Offline".
3.Wait for Steam to restart.
4. Again open the "Steam" tab and select "Sign in to the network ...".
Solution # 4.
1.Close STEAM.
2.Open start and click "Run".
3. In the "Run" field, write: "C: Program Files (x86) Steam bin SteamService.exe" / repair (if you have STEAM installed in a different folder, change the path to the SteamService.exe file yourself).
4.Wait for the execution process.
5.Open STEAM and check if the error "The VAC system could not verify your gaming session" disappeared.
Solution # 5.
Many users are helped by the banal disabling of the antivirus, check if this method works for you.
Solution # 6.
Check the correct date and time on your computer. It is imperative for the VAC system to match your time zone in which you live.
Solution no. 7.
The most commonplace way is to restart the computer, and this solution helps many people.
If none of the above helps, then, as an option, you can contact Steam Support, but this is already a last resort. It is unlikely that they will help you there