[OpsMgr 2007 R2] Attempting to access the Operations Manager Web Console fails and Event 33857 is recorded

This Knowledge Base article talks about an issue where you are unable to access the Operations Manager 2007 Web Console and Event 33857 is recorded in the Operations Manager event log:

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Symptoms

Consider the following scenario:
- You are unable to access the Operations Manager 2007 Web Console
- Event 33857 is recorded in the Operations Manager event log:

Log Name: operations manager Source: Health Service Modules Date: <date> Event ID: 33857 Task Category: None Level: Error Keywords: Classic User: N/A Computer: webconsoleserver.contoso.com Description: Failed to retrieve the state of the following site: 'Operations Manager 2007 WebConsole'. The operation will be retried.

HRESULT: 0x800710d8
Details: The object identifier does not represent a valid object.
One or more workflows were affected by this.
Workflow name: Microsoft.Windows.InternetInformationServices.2008.WebSite.WebSiteStatusCheck.Monitor
Instance name: Operations Manager 2007 WebConsole
Instance ID: {CEE899C4-4FD5-AD3B-AE4F-307F2871E1E0}
Management group: group
Event Xml: <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">

Cause

This can occur if the services for the Web Server role have been modified or reinstalled once the Operations Manager Web Console has been installed. If one of the components below is modified the Web Console may stop functioning:
• HTTP Redirection
• ASP.NET and additional roles
• ASP
• Basic Authentication (if using Forms Based auth and SSL)
• Windows Authentication (if using Windows account authorization)
• IIS 6 Management Compatibility and/or sub-roles

Resolution

To resolve this issue, remove the Operations Manager Web Console from the Server and reinstall any component required for the Web Server role for the Operations Manager Web Console. Once the Web Server prerequisites have been installed, you can reinstall the Operations Manager Web Console.

This posting is provided "AS IS" with no warranties.