What to do if Counter-Strike: Source won't start
It’s easier to look for most problems in order: first understand whether the launcher starts, then check the integrity of files and Windows Defender, and then separately deal with the connection to the server.
Launcher won't open
- Restart your computer and try opening the launcher again.
- Check that the game is completely installed or unpacked, and that it is launched from its main folder.
- If the folder is in the Windows system directory, try using a regular game folder, such as D:\Games\CSS.
- See if Windows Defender blocked the file immediately after downloading or extracting it.
The game opens and closes immediately
If the game window appears and closes quickly, first undo recent manual changes to files and settings. This is especially important after installing third-party models, configs or other add-ons.
If the problem started immediately after the first installation, recheck that the archive or installer completed without errors and that no files were deleted by Windows Defender.
Windows Defender deleted or blocked the file
Don't add random folders and programs to exceptions just to remove the warning. Use the separate MARCOPLAY instructions and make sure that you are working with the game files downloaded from the MARCOPLAY page.
After restoring the file, launch the launcher again and let it perform the check provided by the build, if such an option is available.
Can't connect to the server
- Make sure the server is currently running and showing players or available status on MARCOPLAY.
- Check the server address and try connecting through the favorites list.
- If the main address is not available, look at the server mirror when it is listed on the site.
- Stop VPN, proxy or unstable wireless connection while checking, if you are using them.
What to write to support if the problem persists
Describe at what step the problem occurs: downloading, launcher, opening the game, or connecting to a specific server. Indicate what exactly is happening on the screen and whether error text appears.
If the problem is with the server, please include its name or address. If there is a problem with the launch, it is useful to indicate the Windows version and what was changed in the game immediately before the error.
Everything is ready for the next step
Download the CSS, select the MARCOPLAY server and go to the game. If you have a question, you can open support directly from the site.
