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The operation with application resources is blocked by Self-Defense [KES for Windows]

Advice and Solutions (Forum Knowledgebase) Disclaimer. Read before using materials.

This article is about Kaspersky Endpoint Security for Windows (KES for Windows)

This informational message does not mean that Self-Defense accuses any process of being under malware attack, it proactively blocks certain operations that could pose a potential threat to processes.

The number of events depends on the activity of applications that inhabit the system, especially from their periodic activities, polls on a timer, on emerging events, and so on. The event in the reports is informational - it can be simply disabled it in the settings. It's not expected to react to these events.

More specifically, it's usually the update programs and VMWare services try to access application processes. The update programs want to restart all processes when the update is finished so that they don't have to reboot the system. But KES doesn't allow them to restart our processes. 

The applications causing these events:

  • Microsoft Edge Update
  • Google Installer
  • Windows installer
  • VMware Authorization Service
  • Host Process for Windows Services
  • Client Server Runtime Process

It is normal for such a request to fail, and this should not be a concern. These events can be turned off in active KES policy: General settings→Interface→Notifications: informational messages→Self-Defense restricted access to the protected resource.

2 Comments

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elWinter

elWinter

Members

(edited)

what about video conferencing software? we had many issues about zoom-like software causes self defense events while acessing host devices like camera and micro. The only way problem was solved is to add software to Trusted

It would be impossible to troubleshoot such a problems with self defense events turned off

Edited by elWinter

Demiad

@elWinter, hello

The situation description above mentions events like this:

Цитата

Event: Self-Defense restricted access to the protected resource
Application name: CptHost.exe
Application path: C:\Users\username\AppData\Roaming\Zoom\bin
Application PID: 32212
Application function: Opening process
Object: C:\Program Files (x86)\Kaspersky Lab\KES.12.6.0\avpui.exe
User name: username
User type: Not defined
Component: Protection

These events can be safely ignored. This situation does not affect the operation of third-party applications and devices.

If you have any issues with your applications, please follow the article:

https://support.kaspersky.com/16087

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