Sometimes your anti-virus software can falsely detect a game or Games Manager as a malicious program and block it from working properly. You may or may not receive an error message when this happens.
What you are seeing is what is called a false positive. A false positive is an entity, such as a file or a process, that was detected and identified as malicious, even though the entity isn't actually a threat. Please rest assured that we have thoroughly checked everything on our site for viruses and that we would not release anything that could potentially harm your computer.
In cases like these, while not ideal, it is recommended that you temporarily turn off your anti-virus software while downloading or playing your game, then turn it back on when you are finished.
Additionally, we kindly ask that you click HERE to send a ticket to our support team with the specifics of your anti-virus program and any games that it might have flagged.