![]() ![]() It included a lot of new features, including support for distributed transactions and event publication and subscription. This was included with Windows 2000 and renamed COM . Microsoft launched an extension to COM, called Microsoft Transaction Server (MTS), with Windows NT 4. Later in 1996 COM got a “network version”, called DCOM, meant to compete with other network technologies like CORBA. How confusing is that?! Anyway, in 1996 Microsoft used OCX in IE, renamed all their OLE technologies related to the Internet to ActiveX (calling ActiveX objects “ActiveX controls”) and began starting to rename other OLE pieces to ActiveX too, except for the compound document part. So the name OLE as a specific technology name “died” and became a synonym for all the Microsoft implementions of this technology type. ![]() At the same time Microsoft stated OLE 2 was just renamed to “OLE”, wasn’t officially an acronym anymore and was a collection name for all their component technologies. In 1994 OLE was updated with a successor for VBX, called OLE custom controls (OCX). Besides all this Microsoft also released a similar mechanism for use in Visual Basic (VB): Visual Basic Extensions (VBX). As already said, the technology has been replaced with a new, more modern COM in 1993. This was the first “general-purpose” object based framework for software componentry and interprocess communication. DDE was born in 1987 and made it possible to send and receive message in “conversations” between applications OLE was building on that and became the first object based framework for software componentry and interprocess communication, but still only limited to compound document scenarios… This changed with the next version, launched in 1992 and included in Windows: OLE 2. COM was introduced by Microsoft in 1993 and was the successor of the older Object Linking and Embedding (OLE) technology, which was introduced in 1991, targeted compound documents only and built on top of an even earlier technology called Dynamic Data Exchange (DDE). ![]() COM makes it possible to create modular software components that can be called and loaded at runtime and on-demand across process boundaries, making interprocess communication possible. Some software pieces (components) are built based on this model and they are often called “COM objects”. COM is a model based on objects, representing software components. The event source DistributedCOM refers to Distributed COM (DCOM), the “network” (“distributed”) version” of Component Object Model (COM). Anyway, let’s take a closer look at this issue. There are a lot of possible DCOM errors of this kind, that’s why I had to include part of the solution in the title. I have already said too much with the title, so yes, it’s Machine Debug Manager related. I first discovered the error on a Remote Desktop Session Host (RDSH), but it’s not specific for RDSH. The following screenshots are taken from a session which had a Dutch language configured, so it differs a bit from the description above. This security permission can be modified using the Component Services administrative tool. To the user DOMAIN\ USER SID ( SID) from address LocalHost (Using LRPC). On some systems the following error appears in the System event log:ĭescription: The application-specific permission settings do not grant Local Activation permission for the COM Server application with CLSID (or what you need to know about DCOM and Machine Debug Manager) DCOM error related to Machine Debug Manager ![]()
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