Good morning, this morning was sailing quietly and try to play a movie in mkv my external hard drive see that all files have changed the extension and have it added: email@example.com. When attempting to reproduce this or changing again the extension will not let me play. I have been a couple of times Malwarebytes Anti-Malware and has not detected anything. I tried using a couple of decrypting files kaspersky, but nothing seems to not work. Can anyone's take me a hand?