The same situation on KTS. I fixed it enabling build-in Windows firewall, without it Windows cannot detect Kaspersky as default and working antivirus. But this no matter. Kaspersky 2021 it worst Kaspersky version I ever had on my system. 21.2 was simply not usable, 21.3 is much more stable during typical work in Windows, but still I have freezes during shut down, endless power shutdowns etc. So, again, this software in actual state is unusable. This is extremely dangerous for data consistency on HDD/SSD, this kind of behaviour. After downgrade to version 20.x problems gone. Version 21 has patch “g” and still critical bugs in code exists. This is serious fault in trust for yours corporation. You must fix it. My configuration: CPU: Intel Core i7-2600 (Sandy Bridge-DT, D2) 3400 MHz (34.00x100.0) @ 3800 MHz (38.00x100.0) Motherboard: ASUS P8P67 PRO BIOS: 3602, 11/01/2012 Chipset: Intel P67 (Cougar Point) [B3] Memory: 16384 MBytes @ 1066 MHz, 11-12-12-30 Graphics: GIGABYTE GTX 1060 WindForce 2X OC 3GB (GV-N1060WF2OC-3GD) NVIDIA GeForce GTX 1060 3GB, 3072 MB GDDR5 SDRAM Drive: INTEL SSDSC2BB150G7, 146.5 GB, Serial ATA 6Gb/s @ 6Gb/s Drive: SanDisk SSD PLUS 480GB, 468.9 GB, Serial ATA 6Gb/s @ 3Gb/s Drive: TOSHIBA THNSNH060GBST, 58.6 GB, Serial ATA 6Gb/s @ 3Gb/s Drive: Maxtor 6B300R0, 293.1 GB, E-IDE (ATA-7) <-> USB Drive: Adaptec Array, Adaptec RAID 5405Z SAS RAID Controller, Disk drive Drive: PLEXTOR BDDVDR PX-B320SA, BD-ROM Sound: Intel Cougar Point PCH - High Definition Audio Controller [B3] Sound: NVIDIA GP106 - High Definition Audio Controller Sound: ASUS Xonar D1 Network: Intel 82579V (Lewisville) Gigabit Network Connection OS: Microsoft Windows 10 Enterprise LTSC (x64) Build 19044.1415
