How to Fix Fix DCOM Errors on Windows 10 and 11 on Windows
Getting DCOM Event ID 10016 errors in Event Viewer? "The application-specific permission settings do not grant Local Activation permission"? Fix DCOM configuration errors.
Symptoms
You might be experiencing this problem if you notice:
- •Event Viewer shows repeated DCOM Event ID 10016 warnings
- •Error: "application-specific permission settings do not grant Local Activation permission"
- •DCOM errors reference specific CLSIDs and APPIDs
- •Applications fail to start with DCOM permission errors
- •COM+ applications report access denied or timeout
- •Remote DCOM connections fail with authentication errors
Common Causes
- ⚠Windows Update changed DCOM object permissions without updating security descriptors
- ⚠Third-party software installed COM objects with incorrect permissions
- ⚠User account does not have required DCOM launch/activation permissions
- ⚠DCOM security was tightened by a Group Policy change
- ⚠Registry permissions on DCOM configuration keys are corrupted
- ⚠Windows upgrade left orphaned DCOM entries with wrong security
Solutions
Solution 1: Fix DCOM Event ID 10016 Permissions
- 1Open Event Viewer → Windows Logs → System
- 2Find a DCOM 10016 error and note the CLSID and APPID values
- 3Open Registry Editor (regedit) as Administrator
- 4Navigate to: HKEY_CLASSES_ROOT\CLSID\{paste-CLSID-here}
- 5Note the application name in the (Default) value
- 6Navigate to: HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\{paste-APPID-here}
- 7Right-click the APPID key → Permissions → Advanced
- 8Change owner to Administrators group → Apply
- 9Give Administrators Full Control → Apply
Solution 2: Fix via Component Services
- 1Open Component Services (dcomcnfg)
- 2Navigate to: Component Services → Computers → My Computer → DCOM Config
- 3Find the application matching the CLSID from the error
- 4Right-click → Properties → Security tab
- 5Under "Launch and Activation Permissions" → click Edit
- 6Add the user or group from the error message
- 7Grant: Local Launch and Local Activation permissions
- 8Click OK and restart the affected service or application
Solution 3: Suppress Known Safe DCOM Errors
- 1Many DCOM 10016 errors are cosmetic and do not affect system function
- 2Common safe-to-ignore CLSIDs include Windows Runtime Broker and immersive shell
- 3If the system is functioning normally, these errors can be ignored
- 4To reduce log noise, verify the errors are not causing actual failures
- 5Check if any applications are actually failing — if not, the errors are benign
- 6Microsoft has confirmed some DCOM 10016 errors are by design
- 7Do NOT change permissions on system-owned COM objects unless necessary
- 8Focus on fixing only DCOM errors that cause actual application failures
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