Tf2 validating problem
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In order to resolve the issue, you need to add this file/folder into the exceptions list of your antivirus/internet security program so it doesn’t scan it all the time.
folder or you can back it up somewhere else and copy the maps back later.
It may also happen after exporting or creating a video in replay. So they are two things you can do to avoid the frustration that results after these crashes.You can run the game in windowed mode or you can disable the Windows Aero Themes.The latter may work for few but the first workaround will work for most.That said, there are also some technical difficulties faced by those, who haven’t played any source engine game before.So, if you are among these and are experiencing any of these issues, start reading the troubleshooting guide that follows.
Though, you may not like playing this game in Windowed but if you can’t fix the crash, you should give it a try. Type this into your startup options: This will give you a fake full screen, a window without borders, so it isn’t all that bad.