If you are still encountering this issue within Dota 2, please create or join an existing thread regarding that issue on the Dota 2 Development Forums.
Widespread crashes or other issues will often be fixed by the Dota 2 development team within days of the issue appearing.
If you are using a computer with an AMD FX series processor, see our Games do not run on AMD FX processors article for more information.
If you think some files of your game installation may be corrupt or have been deleted as a false positive by antivirus or security software, try Verifying Your Game Files (GCF).
If you are encountering performance issues, game crashes, or Dota 2 is failing to launch with or without an error message, proceed through this article from top to bottom and complete all applicable steps to troubleshoot the issue.
Check to see if there is an article related to the error message that you are seeing in the Specific Error Messages category.
Refer to our articles regarding Hardware and Software based performance issues. If you are encountering any issues with your Steam games, ensure that your drivers are completely up to date.
If Dota 2 is failing to start after preparing to launch, we recommend that you attempt to launch with either the -autoconfg or -safe launch option in that order.
This should be done if you think some of the game's files may be corrupt, or if you have overwritten any game files with custom assets or mods and you wish to restore the game to its original state.
If your game was working previously but is now crashing or freezing and you have completed the above instructions under the "Verifying Game Cache" section with no results, try this next.
For Windows computers: You should see the Library folder available through the Go menu on the menu bar while holding the option key.
If there is no article related to the message that you are seeing, continue through this article to troubleshoot the issue.
Please read and complete all applicable troubleshooting steps in the Common Dota 2 Technical Issues and Solutions guide provided by the Dota 2 developers.