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. Complete all steps exactly as they are presented. Refer to our articles regarding Hardware and Software based performance issues. Please read and complete all applicable troubleshooting steps in the Common Dota 2 Technical Issues and Solutions guide provided by the Dota 2 developers. If there is no article related to the message that you are seeing, continue through this article 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.