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Right click on the trainer and select 'Run as admin'

Windows will throw this kind of message at you if the trainer is blocked creating the tmp file.

So I am very sure you have some security software installed on your PC, either it's Windows Defender + SmartScreen or something else.

For this trainer you'll need scan exclusions in your security software for the trainer exe file and the tmp file called - ~CheathappensTrainer.tmp - which is located in the Windows tmp folder -> C:\Users\YourWindowsUserName\AppData\Local\Temp\

If you don't know how to do this, please visit our AV Notification page, pick your product and read or watch how it's done. -> Link

Originally posted by 0x90
Right click on the trainer and select 'Run as admin'

As before, the trainer didn't start. Windows asked me to select a program with which to open a .tmp file.

Originally posted by Taurusplopp
So I am very sure you have some security software installed on your PC, either it's Windows Defender + SmartScreen or something else.

Windows Defender is completely turned off. I have Windows 7, which doesn't have SmartScreen. If there's any security software on my computer, it isn't listed in Programs and Features.

Windows 7 uses Windows Defender (formerly known as Microsoft Essentials) and SmartScreen (only internet related).

Until you haven't just disabled Defender's real-time protection but the service itself, it's still a valid point.

Otherwise it could be some online banking software or add-on, a backup solution, one-click tools or anything else running in the background and scanning your PC.

I opened the Task Manager and found Windows Defender, called "WinDefend" under the Services tab. It's already stopped. However, just to be thorough I also found a running service called "wscsvc," with a description of "Security Center." I stopped that too and again tried to open the trainer as an administrator. I got the same result as before.

Then something else is blocking the trainer.

Do you have any other steps for me to follow?

Check your .NET installtion if it's corrupted -> Link

Run Windows 7 in Diagnostic startup with system services only and try running the trainer again. Enable other services step by step until you find the culprit. If not, install Windows from scratch.