EVERYTHING 9.99$ AT CAPTAIN SIM! in The Bargain Hunter's Shack Posted December 22, 2021 2 hours ago, Coneman said: I got the 777 for MSFS and I keep getting a virus warning when trying to install. Defender shows the info and the file is m744.dll in the temp folder. Following the info link to Microsoft it looks like a legit, known trojan. At this point I am NOT turning off Defender as CS suggests. Getting any help from them is problematic at best. I've had quite a few apps not install without turning off my antivirus, including EZDok and RXP's GTN 750. The 777 was no different when I tried installing it this morning, but I had to go an additional step and turn off my firewall as well (which I admit was kind of unsettling). Still, I've known these monitoring program to be a little too sensitive with not only these types installs but in dozens of other legitimate programs too so this sounds like just another false-positive. Still, if you're uncomfortable with turning them off, maybe you can get a refund.