Skip to content
PCDecoder
Event ID 10016DistributedCOM permission errorEvent IDWidely reported

Event ID 10016 DistributedCOM: what it means and how to fix it

Updated Oct 24, 2026 · Checked against Microsoft documentation · How this page is made

Quick answer

Event ID 10016 logs in Event Viewer when an application requests permissions to access a component through DistributedCOM but lacks the required local activation rights. Users often spot this entry during computer freezes or while reviewing system logs after an unexpected restart. These permission events rarely cause system instability, and the best approach is to verify system file integrity or apply pending updates rather than modifying component permissions.

What it means

Event Viewer logs Event ID 10016 under the System log with DistributedCOM as the source. Windows generates this record when an application or service attempts to start or access a COM component without having the configured local activation or launch permissions. DistributedCOM is a Windows architecture that lets software components communicate across processes and network boundaries.

Understanding the log entry

When a program calls a background component, Windows checks the access permissions configured for that specific component identifier. If the requesting user account or system account lacks the specified permission, the operating system denies direct activation and records Event ID 10016. In standard Windows operations, many built-in components and third-party utilities trigger this log entry during routine tasks. The operating system handles these permission blocks by falling back to alternative routines or continuing background processing without interruption.

Why you see this during system issues

Many users discover Event ID 10016 only after experiencing computer crashes, freezes, or system instability. Opening the Windows Event Viewer after an unexpected reboot reveals multiple warnings and errors, with DistributedCOM events frequently appearing near the top of the timeline. Because these entries are categorized as errors or warnings, it is common to assume they caused the crash.

DistributedCOM permission errors are rarely the root cause of hardware locks or blue screen crashes. The timing often coincides with startup, shutdown, or background service restarts that occur around system recovery. The actual cause of system instability usually lies elsewhere, such as faulty device drivers, power issues, or corrupted system files.

Why manual permission editing is discouraged

Changing permissions for COM components manually through administrative tools can disrupt internal security boundaries. Windows manages default permissions to keep system processes isolated from lower-privileged software. Modifying these access lists can expose background services to unintended behavior or break future system updates. Unless a specific software vendor explicitly documents Event ID 10016 as the direct source of a malfunction in their application, troubleshooting should focus on general system integrity rather than reconfiguring COM permissions.

Common causes

  • A background program or Windows service attempts to initialize a COM component without administrative activation permissions.
  • Routine operating system operations trigger security permission checks that fail as intended by design.
  • Corrupted system files cause background services to query incorrect component identifiers.
  • Recent software updates altered application access rights or left outdated service registrations behind.

How to fix it

Safest and most likely fixes first. Readers' answers to "Did this fix it?" reorder this list over time.

  1. Verify normal system operation

    Use this check if you noticed Event ID 10016 while browsing Event Viewer and your computer is not crashing or malfunctioning.

    1. Observe whether any application fails to launch or displays an error dialog during normal daily use.
    2. Check whether your computer experiences performance degradation, freezes, or unexpected shutdowns.
    3. Leave the Event Viewer entries alone if your programs run reliably, as these records are standard background security logs.
    Did this fix it?

  2. Install the latest Windows updates

    Use this fix to ensure system components and service definitions receive the latest stability patches from Microsoft.

    1. Select Start and open Settings.
    2. Go to Windows Update.
    3. Select Check for updates.
    4. Download and install all available quality updates and optional driver updates.
    5. Restart your computer after installation finishes.
    Did this fix it?

  3. Run the System File Checker and DISM repair tools

    Use this fix if your computer exhibits stability issues, freezes, or unexpected errors alongside Event ID 10016 logs.

    1. Right-click the Start menu button and select Terminal (Admin) or Command Prompt (Admin).
    2. Type DISM.exe /Online /Cleanup-image /Restorehealth and press Enter.
    3. Wait for the deployment image servicing tool to complete the scan and restore damaged system files.
    4. Type sfc /scannow and press Enter.
    5. Allow the system file scan to reach 100 percent completion, then restart your PC if repairs were reported.
    Did this fix it?

  4. Run the Windows Update troubleshooter

    Use this fix if the error began immediately after a failed or interrupted Windows update.

    1. Open Settings from the Start menu.
    2. Navigate to System and select Troubleshoot.
    3. Click Other troubleshooters.
    4. Locate Windows Update and select Run.
    5. Follow any onscreen recommendations and restart the computer if prompted.
    Did this fix it?

Is it just you?

25+ Microsoft Q&A threads discuss this. Most recent activity:

Checked Oct 23, 2026. Refreshed automatically every few days.

Sources

Frequently asked questions

Does Event ID 10016 cause blue screen crashes or PC freezes?

Event ID 10016 does not cause blue screen crashes or system lockups. The log entry reflects a standard permission rejection for an internal component, and crashes occurring at the same time typically stem from hardware, power, or driver issues.

Can I safely ignore Event ID 10016?

You can safely ignore Event ID 10016 if your computer operates normally and your applications work without errors. Windows frequently logs these events by design when background processes request permissions they do not require.

Should I change component permissions to stop the error?

You should not modify component permissions in administrative tools to clear this event. Altering security descriptors on system components can introduce security vulnerabilities and cause unexpected issues during future Windows updates.

Why are there so many DistributedCOM errors in Event Viewer?

Many modern Windows services and background applications constantly communicate via DCOM. Whenever a routine request lacks explicit local activation rights, Windows records an entry, causing dozens of records to accumulate naturally over time.

More event ids decoded