No offence, but after using a fully W 10 Pro updated to the latest version, since November 2019, with this great Microsoft AV on and running, being quite civil in usage (no prns , downloaded files scanned in virustotal and so on), something has entered in the PC in March 2020.I have discovered the problem due to a simple/accidental scan with Hitman, after seeing a suspicious connection. Had to re-image. I am not using cracked software, i am browsing with Sandboxie and No Script ON (and other browser add-ons), but i haven t used unfortunately a complementary live 3-rd party antivirus. This AV seems useless without 3-rd parties. It gives a false sense of protection. If you have a Windows 10 copy, do yourselves a favor, make a back-up and use a complementary security software, to avoid crying after data. The little thing was not spotted by Malwarebytes Antirootkit either and neither HItman Pro was to clear about what it was in fact that installed in my PC. Never had such issues in Windows 7, since installing it for the first time, with a simple combo: Sandboxie and a proper firewall. Do NOT BELIEVE the HYPE !