Fix COM Surrogate Error in Vista - Troubleshooting Guide

Addressing the "COM Surrogate Has Stopped Working" Error

Encountering the error message "COM Surrogate has stopped working" while navigating folders with video or media files is a common issue. Fortunately, several potential resolutions exist. This problem typically arises from incompatibilities with codecs and other COM components installed by various software applications, particularly older versions of programs like DivX or Nero.

Understanding the Root Cause

The core of this issue lies in software that hasn't been fully optimized for compatibility with older operating systems. These programs install components that interact with the system in ways that can trigger the COM Surrogate process to fail. Identifying the specific software causing the conflict is crucial for effective troubleshooting.

Potential Solutions

A range of solutions can address this error, and the most appropriate approach depends on the software responsible. While DivX and Nero are frequently implicated, other applications can also contribute to the problem.

Alan McC suggested a streamlined fix that may resolve the issue for some users. This involves disabling Data Execution Prevention (DEP) specifically for the COM surrogate process, dllhost.

Disabling DEP for dllhost

Follow these steps to adjust DEP settings:

• Right-click on the "Computer" icon and select "Properties".

Within the System Properties window, navigate to the "Advanced system settings". Then, under the "Advanced" tab, click on the "Settings" button.

Select the "Data Execution Protection" tab. Subsequently, click the option to "Turn on DEP for all programs and services except those I select".

This allows for granular control over DEP, potentially resolving conflicts caused by incompatible software components. Remember to restart your computer after making these changes.