Software Toolbox Recommendations for Configuring DCOM New DCOM Configuration Videos Available!!! Having problems with "Access Denied" when trying to get your OPC Client/Server software communicating? We have over 10 years of DCOM configuration and troubleshooting experience that we have tried to put within our DCOM tutorial. Configuring DCOM Windows 98, NT and 2000 DCOM Configuration Windows XP, 2003, Vista, 2008 and Windows 7 - DCOM Configuration Client side settings Server side settings General settings OPC Server Specific OPCEnum settings Introduction to DCOMCnfg Default DCOM options OPCEnum OPC Server PC only Local Security Policies Workgroups vs. Domains   Windows XP Service Pack 2 Important information available here: http://www.softwaretoolbox.com/xpsp2 Still having trouble and need more help? Software Toolbox customers are welcome to contact Technical Support for additional assistance. When contacting support please prepare a Microsoft Word document containing screenshots of ALL the DCOM configuration screens that you have modified in accordance with our recommendations. Send screenshots and help request to: DcomExpert@softwaretoolbox.com Technical Explanations and Documentation General Information Technical Explanations Introduction to DCOM Preface and Best Practices Introduction to DCOM Configuration Utility (DCOMCnfg.exe) NT/2000 User Security Permissions/Considerations Special considerations in multiple domain settings Microsoft Reference Articles, for those who aren't afraid of lots of "under the hood, nuts and bolts" tech talk! DCOM Architecture DCOM Technical Overview Comments and Feedback? Input and client questions may be sent to: DcomExpert@softwaretoolbox.com Warning: contents of this tutorial are Copyright Software Toolbox, Inc. 2009-2010, and may not be reproduced in electronic or written form without written permission of Software Toolbox Inc. Anyone found copying copyrighted material from this site for use on another site will be prosecuted. You are welcome to link to this site from your site. The information in this article is accurate to the best of our professional judgment at the time of writing but is subject to change.