IIS6 MMC detects an error in this snap-in. We recommend that you disable and restart MMC

 

Install Windows Server SP2 and IIS6. When you open the IIS manager, the message "MMC detects an error in this management unit. We recommend that you disable and restart MMC" appears ,.

There are two error messages in the system log query.

Event Type: Error
Event Source: DCOM
Event Type: None
Event ID: 10016
Date: 2010-7-22
Event: 1:40:12
User: nt authority \ Network Service
COMPUTER: ADMIN-97CB2CA36
Description:
ApplicationProgram-The COM server application (CLSID is
{A9E69610-B80D-11D0-B9B9-00A0C922E750}
The Local activation permission for grant the user nt authority \ Network Service Sid (S-1-5-20 ). You can use the component service management tool to modify this security permission.

For more information, see Help and Support Center in http://go.microsoft.com/fwlink/events.asp.
Event Type: Error
Event Source: w3svc
Event Type: None
Event ID: 1002
Date: 2010-7-22
Event: 1:40:13
User: N/
COMPUTER: ADMIN-97CB2CA36
Description:
The application pool 'defaultapppool 'is automatically disabled because a series of errors occur in the process that provides services for the application pool.

For more information, see Help and Support Center in http://go.microsoft.com/fwlink/events.asp.

After investigation, the permission settings for DCOM are incorrect. Check the registry:
Hkey_classes_root \ appid \ {A9E69610-B80D-11D0-B9B9-00A0C922E750} Get the DCOM application name IIS Admin Service

Start → Control Panel → management tools → component services
Open the Component Service Tree directory → computer → my computer → DCOM Configuration
In the right-side pane, right-click IIS Admin Service → properties → Security → start and activate permissions → custom → edit and add a network service user, and check local start and Local activation.

You can also set the network service user to authenticated users, which is the default Application User Added after normal IIS installation.

At this point, the problem is solved
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