DCOM permissions, IIS, .net CORE - permissions set but access denied


Environment: IIS, .net CORE ASP.net web API, ProvideX.Script COM object (Sage 100/ MAS90 2018 v4.5), Server 2012 R2.

Starting with the workaround first: so far my workaround has been to allow my IIS identity pool ID full access to the DCOM computer properties. This is not a good long term solution IMHO.

The documentation for Sage's Object Interface state to set the permissions on the "ProvideX OLE Server object and select properties", but there is no obviously labeled object as such. I have set my application pool identity for the pvxcom (what I assume to be the OLE server object) to have full permissions across

  • launch and activation permissions
  • Access permissions
  • Configuration permissions

The API spits back the error:

"Retrieving the COM class factory for component with CLSID {60503AB4-2D27-11D6-B249-00C04F50D575} failed due to the following error: 80070005 Access is denied. (0x80070005 (E_ACCESSDENIED))."

and the event viewer error is

The machine-default permission settings do not grant Local Activation permission for the COM Server application with CLSID {60503AB4-2D27-11D6-B249-00C04F50D575} and APPID Unavailable to the user ARDEXHQ\SQLdev SID (S-1-5-21-1838108609-599286699-1844936127-2822) 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.

Curiously, though, the event viewer does not show the same CLSID as the pvxcom (Both error messages above are the same, as expected). I cannot find the relevant CLSID in the DCOM configuration folder. I did find it in the registry, and I gave my application pool ID full access in each instance that I found the CLSID.

And of course I've restarted the server...

There are several instances of the same question being asked on the sage forums, but no answers that I can get to work.

Since allowing my application pool ID free reign on the COM directory gets me working, I do not believe this is a 32/64bit problem.

asked on Stack Overflow Oct 22, 2020 by ObjectiveSQL • edited Nov 12, 2020 by Iguananaut

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