You’ve likely received this error message: “Matchmaking Failed” – VAC couldn’t verify your game session. We have some good news and even more for you. The good news is: The good news? The better information. In 2019, there’s an easy solution!

Fix #1, as outlined below, works for approximately 95% of people, so it is likely to work and fix your problem. We have other solutions in case it doesn’t work.

Fix #1: Verify the integrity of game files and restart your computer

To perform this fix, open up Steam, go to Library, right-click Counter-Strike: Global Offensive, and then click “Properties”:

After opening the properties window, go to “Local Files” and click “Verify Integrity Of Game Files.”

After this is complete, restart the computer.

Once you’ve completed the above, your CSGO should work fine, and the “Matchmaking failed – VAC could not verify your game session error” error should disappear. Continue reading Fix #2 below if it continues to occur.

Fix #2: Steam Service Repair

Valve suggests fixing the Steam service in this instance. All you have to do to accomplish this is:

Close Steam. Click “Exit” by right-clicking Steam in the System Tray (bottom left-hand corner).

Open your Start Menu and search for “Run.” Then, open the file titled “Run.”

Type the following in the text box and press “OK.”

“C:\Program Files (x86)\Steam\bin\SteamService.exe” /repair

The terminal should now appear empty. Wait for the terminal to close, then re-open Steam. Your issue should now be resolved.

If your error isn’t fixed, continue reading for Fix #3.

Fix #3: Reinstall Completely CS: GO

If the two solutions mentioned above haven’t worked, restarting your computer or changing a setting won’t address your problem. While we advise you to look online for alternatives that might work for you, there’s a reasonable probability that reinstalling CS: GO will save you time. Reinstalling the game will solve the problem quickly and spare you from trying numerous (often ineffective) workarounds.

To reinstall CSGO fully, open your Steam Library, click on “Counter-Strike Global Offensive,” and then click “Uninstall.”

Click “Delete” on the window that appears.

You will then need to reinstall CS.GO. You can do this at https://store.steampowered.com/app/730/CounterStrike_Global_Offensive/. After reinstalling CS. You should fix the “Matchmaking Failed – VAC could not verify your game session.”