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goofle is your friend. &nbsp;Have a look at these articles: 
 
<a href="https://www.tenforums.com/general-support/119105-eventid-10016-a.html" rel="ugc">https://www.tenforums.com/general-support/119105-eventid-10016-a.html</a> 
 
<a href="https://www.tenforums.com/performance-maintenance/110023-why-certain-dcom-10016-events-dont-matter.html" rel="ugc">https://www.tenforums.com/performance-maintenance/110023-why-certain-dcom-10016-events-dont-matter.html</a> 
 
&quot;These 10016 events are recorded when Microsoft components tries to access DCOM components without the required permissions. In this case, this is expected and by design. A coding pattern has been implemented where the code first tries to access the DCOM components with one set of parameters. If the first attempt is unsuccessful, it tries again with another set of parameters. The reason why it does not skip the first attempt is because there are scenarios where it can succeed. In those scenarios, that is preferable.&quot; 
 
(Cluttering up event logs with preventable errors simply because it's convenient is, IMO, poor coding practice.) 
 
Over the past two weeks we've seen more of this question, so it's not an uncommon thing.
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I have a computer that is throwing dozens of dcom errors. The event iD is 10016. Here's the text from the event viewer (this is winodws 10 pro, 1809 
 
The application-specific permission settings do not grant Local Activation permission for the COM Server application with CLSID 
{2593F8B9-4EAF-457C-B68A-50F6B8EA6B54} 
&nbsp;and APPID 
{15C20B67-12E7-4BB6-92BB-7AFF07997402} 
&nbsp;to the user KBICUSTOMCASE\timothy2 SID (S-1-5-21-4137594547-1242624928-2318743208-1125) from address LocalHost (Using LRPC) running in the application container Unavailable SID (Unavailable). This security permission can be modified using the Component Services administrative tool. 
 
It's the same message time and time again repeated sequentially every minute or so. 
 
I have no idea what the event log info is trying to tell me. Any assistance on this would be greatly appeciated. 
 
Regards, 
 
Bill
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I have a computer that is throwing dozens of dcom errors. The event iD is 10016. Here's the text from the event viewer (this is winodws 10 pro, 1809

The application-specific permission settings do not grant Local Activation permission for the COM Server application with CLSID 
{2593F8B9-4EAF-457C-B68A-50F6B8EA6B54}
 and APPID 
{15C20B67-12E7-4BB6-92BB-7AFF07997402}
 to the user KBICUSTOMCASE\timothy2 SID (S-1-5-21-4137594547-1242624928-2318743208-1125) from address LocalHost (Using LRPC) running in the application container Unavailable SID (Unavailable). This security permission can be modified using the Component Services administrative tool.

It's the same message time and time again repeated sequentially every minute or so. 

I have no idea what the event log info is trying to tell me. Any assistance on this would be greatly appeciated. 

Regards, 

Bill

Several repetitive dcom errors in the event log

Windows 10 is a personal computer operating system featuring the "universal application architecture" (UAP); apps can be designed to run across multiple devices with nearly identical code, including PCs, tablets, smartphones, embedded systems, Xbox One, Surface Hub and HoloLens. Windows 10 also includes a virtual desktop system, a window and desktop management feature called Task View, the Microsoft Edge web browser, support for fingerprint and face recognition login, voice-based search (Cortana), new security features for enterprise environments, and DirectX 12 and WDDM 2.0 to improve the operating system's graphics capabilities for games.

Windows 10

DCOM

Security is the protection of information systems from theft or damage to the hardware, the software, and the information on them, as well as from disruption or misdirection of the services they provide. The main goal of security is protecting assets, and an asset is anything of value and worthy of protection.  Information Security is a discipline of protecting information assets from threats through safeguards to achieve the objectives of confidentiality, integrity, and availability or CIA for short. On the other hand, disclosure, alteration, and disruption (DAD) compromise the security objectives.