OPC, DCOM and XP SP2

DCOM, it turns out, is #2 on the all time Spawn of Satan list.  I haven’t run into a project with more problems than the one using OLE for Process Control (OLE) over DCOM.

This week’s adventure happened because the client upgraded their machine to Service Pack 2 of Windows XP.  Most in the tech industry know it was rolled out to curb zombie PCs.  So the firewall and nearly everything else was closed down.  Without being told about the upgrade, I was at the client site trying to figure out what was wrong.

Fixing the problem was relatively simple once I Googled DCOM changes in SP2.  In fact, I even found an article on the OPC Foundation’s website on Using OPC via DCOM with Windows XP Service Pack 2 (direct link to the .pdf).

(Hat tip to Professor Z.)

3 Comments

1. Dan said:

   OMG, it’s another acronym. DCOM! WTF is up with M$ and their damn acroynms? .NET is the shiznit, I think; somehow I thought COM anything was gone for good (GFG?) I’m so confused! WTF is DCOM?

   *Hug self with Java code to feel oogie again*

   March 18th, 2006 at 11:44 pm
2. john said:

   DCOM is Distributed COM. Its not new, .NET remoting was intended to replace it, I think. But sometimes you still have to deal with systems that use DCOM.

   March 19th, 2006 at 6:26 am
3. Dan said:

   Oh, it’s still old then. Okay. My world is glued back together now :-)

   March 20th, 2006 at 3:52 pm

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