Something that comes to my mind:
Stuck in an update loop, a bad update not working with your system well, or a Microsoft update,
Not enough space on the computer to run the whole application.....different things that can be contributing to the problem.
Below is the Kaspersky forums, what you can do is to join?, then post a topic with the issues your having, maybe an administrator there can help...
https://forum.kaspersky.com/
If all else fails, I can give you a list of antivirus that you can experiment with to see which one is most suited for you.
Note: The programs listed below are all free to use or they have some sort of trial. Some of them have a paid version that provides more features, while a lot of other good programs only have a paid version but aren't listed there (such as Kaspersky and ESET Antivirus products).
Anti-Virus
Sophos Home
Bitdefender Free Antivirus
Emsisoft Anti-Malware - Free 30 day trial. Once it expires, EAM enters into a freeware mode where it is still considered an Antivirus program, but without real-time protection
Avira Free Antivirus
avast! Free Antivirus
Malwarebytes - Has both a free and paid version. The Premium version of Malwarebytes also offers Exploit and Ransomware protection, for a complete package of: Malware, Web, Exploit and Ransomware protection
HitmanPro 3 - Free 30 day trial
Zemana AntiMalware - Free 30 day trial