kdcom.dll

Kaspersky Data Communication DLL

DLL LibraryEssentialSecurity Component

CPU Usage

0-3%

Memory

1-8 MB

Location

C:\Windows\System32

Publisher

Kaspersky LLC

Quick Answer

kdcom.dll is a legitimate Kaspersky component. It provides inter-process communication for Kaspersky security modules and is normally loaded by the protection suite.

Is it a Virus?

✔ NO - Safe

Must be located in a Kaspersky install folder, e.g., C:\Program Files\Kaspersky Lab\KES 21.0\KDCom.dll or equivalent

Warning

Many KDCom components loaded

IPC and service coordination may keep the DLL loaded even when idle

Can I Disable?

✔ YES

Disabling is not recommended; stopping protection can reduce security

What is kdcom.dll?

kdcom.dll is the Kaspersky Data Communication DLL that enables secure data exchange and coordination between core Kaspersky security modules. It is a shared library loaded by various components to support policy updates, event routing, and IPC tasks within the protection suite.

kdcom.dll implements inter-process communication channels used by Kaspersky modules to coordinate protection tasks, policy enforcement, and data sharing. It is loaded by kdservice and related services and remains resident to support real-time protection.

Quick Fact: kdcom.dll is designed as a lightweight IPC layer; if missing, many Kaspersky features fail to communicate properly.

Types of KDCom-Related Components

IPC Gateway: Facilitates message passing between modules
Policy Dispatcher: Distributes security policies to components
Event Router: Routes security events to appropriate handlers
Session Manager: Maintains IPC sessions for protection tasks
Telemetry Connector: Sends telemetry data to central consoles
Updater Stub: Supports module updates without downtime

Is kdcom.dll Safe?

Yes, kdcom.dll is safe when it is the legitimate file from Kaspersky loaded from official sources (kaspersky.com or installed by the manufacturer).

Is kdcom.dll a Virus or Malware?

The real kdcom.dll is NOT a virus. Malware may masquerade as DLLs with similar names. Always verify the location and signature.

How to Tell if kdcom.dll is Legitimate or Malware

File Location: Must be in C:\Program Files\Kaspersky Lab\KES 21.0\KDCom.dll or C:\Program Files (x86)\Kaspersky Lab\KES 21.0\KDCom.dll. Any other path is suspicious.
Digital Signature: Right-click the kdcom.dll in its folder → Properties → Digital Signatures. Should show a signature from "Kaspersky LLC".
Resource Usage: Normal usage is 0-3% CPU and 1-8 MB memory. Consistent high resource use is suspicious.
Behavior: kdcom.dll should load as part of the Kaspersky protection suite startup or service initialization.

Red Flags: If kdcom.dll is in an unusual folder (like Temp or AppData), loads without the Kaspersky product, has no valid signature, or uses sustained high resources, scan with a trusted antivirus. Be wary of similarly named files like "kdcom32.dll".

Why Is kdcom.dll Running on My PC?

kdcom.dll runs as part of the Kaspersky security suite to coordinate modules and enforce protection policies. It is typically loaded at startup and during security events.

Reasons it's running:

Active Security Modules: Core Kaspersky components are active, requiring IPC between modules
Background Protection: Realtime protection, file watchdogs, and network shields rely on kdcom for messaging
Startup Services: Kaspersky services initialize kdcom during system startup
Policy and Telemetry: Policy updates, licensing checks, and telemetry coordination use kdcom channels
IPC and Health Checks: Periodic health checks and cross-module communication require kdcom to stay loaded

Can I Disable or Remove kdcom.dll?

Disabling kdcom.dll is not recommended. It is an integral IPC layer for Kaspersky protection. You can disable specific features or stop the Kaspersky services, but removing the DLL will break protection.

How to Stop kdcom-Related Components

Pause Protection Features: Open Kaspersky application > Settings > Protection, disable specific shields temporarily
Stop Services: Open Services (services.msc), locate Kaspersky-related services and stop them
Prevent Startup: In Services or Task Manager, disable startup of Kaspersky services to stop auto-launch
Quit UI: Close the Kaspersky UI to stop active modules from starting new sessions
Uninstall the Product: If you must remove, use Windows Settings > Apps > Kaspersky product to uninstall

How to Uninstall Kaspersky Products

✔ Windows Settings → Apps → Apps & Features → select Kaspersky product → Uninstall
✔ Control Panel → Programs → Uninstall a program → Kaspersky product → Uninstall
✔ Follow the on-screen prompts to remove components and reboot

Common Problems: High CPU or Memory Usage

If kdcom.dll related components are consuming excessive resources:

Common Causes & Solutions

Too Many IPC Channels Open: Reduce active protection features or restart Kaspersky services to refresh IPC.
Outdated KDCom Components: Update Kaspersky to the latest build to fix IPC bugs.
Conflicting Extensions: Disable nonessential modules or third-party integrations within Kaspersky.
Corrupted KDCom DLL: Repair or reinstall the Kaspersky product.
Malware Interference: Run a full system scan, ensure kdcom.dll is signed by Kaspersky.
Startup Items: Disable startup for Kaspersky components if not required

Quick Fixes:
1. Open Kaspersky and run a System Scan
2. Update to the latest version
3. Restart Kaspersky services
4. Check for startup items and disable if unnecessary
5. Repair installation if available

Frequently Asked Questions

Is kdcom.dll a virus?

No, kdcom.dll is a legitimate Kaspersky component when located in the official Kaspersky installation folder and signed by Kaspersky LLC.

Why is kdcom.dll using CPU?

Cpu usage from kdcom.dll usually relates to IPC between protection modules, real-time scanning, or policy updates. If persistent, check Kaspersky logs and run a repair.

Where is kdcom.dll located?

Typical locations include C:\Program Files\Kaspersky Lab\KES 21.0\ and C:\Program Files (x86)\Kaspersky Lab\KES 21.0. Verify the exact path from the installed product.

Can I delete kdcom.dll?

Do not delete kdcom.dll manually. Removing it will break protection. Use the official uninstall method if you need to remove Kaspersky.

How do I verify kdcom.dll's signature?

Navigate to the file in Explorer, right-click > Properties > Digital Signatures and confirm the signer is 'Kaspersky LLC'.

Why does kdcom.dll run at startup?

Kaspersky loads kdcom during startup to initialize protection modules and IPC channels for real-time monitoring.