Kact2.exe High Cpu Usage |work| Jun 2026

Ironically, Kaspersky might be scanning its own file.

If you’ve opened Task Manager recently and found a process named Kact2.exe consuming 50%, 80%, or even 100% of your CPU, you are likely confused. This isn’t a common Windows process like svchost.exe or explorer.exe . Kact2.exe High Cpu Usage

If you have recently used a "Windows Loader," "KMSAuto," or a similar activator, Kact2.exe is likely a component of that software. These tools often run background services to re-activate the software periodically (usually every 180 days), which can trigger CPU spikes during the re-activation process or if the service hangs. Ironically, Kaspersky might be scanning its own file

Have a method that worked for you that we didn’t mention? Let us know in the comments below! If you have recently used a "Windows Loader,"

Even if the file is legitimate, why is it eating your processor? Here are the six most common culprits:

Windows Defender is good, but it sometimes misses adware or "grey-area

Kaspersky patched the high-CPU bug in versions 2021 MR2 and later. If you are using an old build, you are vulnerable.