Can't get Xbox 360 Media Center Extender to work

Question

I am using Windows 7 Ultimate x64.  This is a retail copy.  I had previously set up Windows Media Center and successfully set up my Xbox 360 as a Media Center Extender.
After a long hiatus of using Windows Media Center, I went to watch a movie in my media library through my Xbox 360.  It would appear to initially connect and then show the Windows Media Center loading screen and say "Contacting..."  After about 30 seconds, it would display an error asking me to make sure my Windows Media Center PC is turned on (it is).  I ran the Windows Media Center network test in the Xbox 360 and it tested fine.
I attempted to delete the Media Center Extender in WMC and set it up again, but it always fails with an error "An error was encountered while configuring your computer for use with this Extender" at the part where it says "Configuring your Extender".
I looked in the Event Viewer under the Media Center section and found event ID 543:
Log Name:      Media Center
Source:        Microsoft-Windows-Media Center Extender
Date:          3/3/2010 10:13:20 PM
Event ID:      543
Task Category: Configuration
Level:         Error
Keywords:     
User:          WILL7\swsander
Computer:      WILL7
Description:
Media Center Extender Setup failed to create the PnP device with ID: uuid:10000000-0000-0000-0200-00125AC6E86F (timed out after 120000ms).
Error: Element not found.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Media Center Extender" Guid="{7B7838A3-6562-4269-BB7A-97B0D9593882}" />
    <EventID>543</EventID>
    <Version>0</Version>
    <Level>2</Level>
    <Task>4</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2010-03-04T03:13:20.805493500Z" />
    <EventRecordID>333</EventRecordID>
    <Correlation />
    <Execution ProcessID="9408" ThreadID="9760" />
    <Channel>Media Center</Channel>
    <Computer>WILL7</Computer>
    <Security UserID="S-1-5-21-2626302321-2836749625-3976135476-1001" />
  </System>
  <EventData>
    <Data Name="ID">uuid:10000000-0000-0000-0200-00125AC6E86F</Data>
    <Data Name="Timeout">120000</Data>
    <Data Name="Error">-2147023728</Data>
  </EventData>
</Event>
I also tried turning off the Windows firewall on the Windows Media Center PC, but this had no effect on the outcome.  I also tried deleting the Microsoft Windows Media Center Extender Host certificate and restarting the Network List Service, but these steps to did nothing to fix the issue.
I am using the same computer with the same NIC with the same Ethernet cable with the same SOHO router (Linksys WRT54GL) with the same Xbox 360.  Any advice would be welcome at this point.

Answer 1

Log Name:      Media Center
Source:        Microsoft-Windows-Media Center Extender
Date:          12/10/2010 9:51:55 PM
Event ID:      592
Task Category: Configuration
Level:         Warning
Keywords:     
User:          Eric-PC\Eric
Computer:      Eric-PC
Description:
Your Media Center Extender was set up successfully, but failed to connect (timed out after 180000ms).
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Media Center Extender" Guid="{7B7838A3-6562-4269-BB7A-97B0D9593882}" />
    <EventID>592</EventID>
    <Version>0</Version>
    <Level>3</Level>
    <Task>4</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2010-12-11T02:51:55.176149000Z" />
    <EventRecordID>428</EventRecordID>
    <Correlation />
    <Execution ProcessID="16004" ThreadID="15676" />
    <Channel>Media Center</Channel>
    <Computer>Eric-PC</Computer>
    <Security UserID="S-1-5-21-3026407376-1936420717-4019103078-1001" />
  </System>
  <EventData>
    <Data Name="Timeout">180000</Data>
  </EventData>
</Event>
Log Name:      Media Center
Source:        Microsoft-Windows-Media Center Extender
Date:          12/10/2010 9:48:54 PM
Event ID:      506
Task Category: Configuration
Level:         Information
Keywords:     
User:          Eric-PC\Eric
Computer:      Eric-PC
Description:
Media Center Extender account Mcx1-ERIC-PC has been created for the Extender with ID: uuid:10000000-0000-0000-0200-001DD847D7F4.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Media Center Extender" Guid="{7B7838A3-6562-4269-BB7A-97B0D9593882}" />
    <EventID>506</EventID>
    <Version>0</Version>
    <Level>4</Level>
    <Task>4</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2010-12-11T02:48:54.615896200Z" />
    <EventRecordID>427</EventRecordID>
    <Correlation />
    <Execution ProcessID="16004" ThreadID="9024" />
    <Channel>Media Center</Channel>
    <Computer>Eric-PC</Computer>
    <Security UserID="S-1-5-21-3026407376-1936420717-4019103078-1001" />
  </System>
  <EventData>
    <Data Name="User">Mcx1-ERIC-PC</Data>
    <Data Name="ID">uuid:10000000-0000-0000-0200-001DD847D7F4</Data>
  </EventData>
</Event>
Log Name:      Media Center
Source:        Microsoft-Windows-Media Center Extender
Date:          12/10/2010 9:48:49 PM
Event ID:      500
Task Category: Configuration
Level:         Information
Keywords:     
User:          Eric-PC\Eric
Computer:      Eric-PC
Description:
Media Center Extender Xbox 360 Media Center Extender 'uuid:10000000-0000-0000-0200-001DD847D7F4' discovered at address 192.168.1.2.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Media Center Extender" Guid="{7B7838A3-6562-4269-BB7A-97B0D9593882}" />
    <EventID>500</EventID>
    <Version>0</Version>
    <Level>4</Level>
    <Task>4</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2010-12-11T02:48:49.155888500Z" />
    <EventRecordID>426</EventRecordID>
    <Correlation />
    <Execution ProcessID="16004" ThreadID="9024" />
    <Channel>Media Center</Channel>
    <Computer>Eric-PC</Computer>
    <Security UserID="S-1-5-21-3026407376-1936420717-4019103078-1001" />
  </System>
  <EventData>
    <Data Name="DeviceName">Xbox 360 Media Center Extender</Data>
    <Data Name="ID">uuid:10000000-0000-0000-0200-001DD847D7F4</Data>
    <Data Name="Address">192.168.1.2</Data>
  </EventData>
</Event>
Log Name:      Media Center
Source:        Microsoft-Windows-Media Center Extender
Date:          12/10/2010 9:48:36 PM
Event ID:      573
Task Category: Configuration
Level:         Information
Keywords:     
User:          Eric-PC\Eric
Computer:      Eric-PC
Description:
Media Center Extender found:
ID: uuid:10000000-0000-0000-0200-001DD847D7F4
IP Address: 192.168.1.2
Interface GUID: {d8f53a92-8e85-4d1e-bde0-ba30d9b14449}
NHED type: X02
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Media Center Extender" Guid="{7B7838A3-6562-4269-BB7A-97B0D9593882}" />
    <EventID>573</EventID>
    <Version>0</Version>
    <Level>4</Level>
    <Task>4</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2010-12-11T02:48:36.095870300Z" />
    <EventRecordID>425</EventRecordID>
    <Correlation />
    <Execution ProcessID="16004" ThreadID="15608" />
    <Channel>Media Center</Channel>
    <Computer>Eric-PC</Computer>
    <Security UserID="S-1-5-21-3026407376-1936420717-4019103078-1001" />
  </System>
  <EventData>
    <Data Name="ID">uuid:10000000-0000-0000-0200-001DD847D7F4</Data>
    <Data Name="Address">192.168.1.2</Data>
    <Data Name="GUID">{d8f53a92-8e85-4d1e-bde0-ba30d9b14449}</Data>
    <Data Name="NhedType">X02</Data>
  </EventData>
</Event>
Log Name:      Media Center
Source:        Microsoft-Windows-Media Center Extender
Date:          12/10/2010 9:48:35 PM
Event ID:      581
Task Category: Configuration
Level:         Information
Keywords:     
User:          Eric-PC\Eric
Computer:      Eric-PC
Description:
Media Center Extender Setup has determined that the Windows Firewall is enabled in the Home profile.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Media Center Extender" Guid="{7B7838A3-6562-4269-BB7A-97B0D9593882}" />
    <EventID>581</EventID>
    <Version>0</Version>
    <Level>4</Level>
    <Task>4</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2010-12-11T02:48:35.555869500Z" />
    <EventRecordID>424</EventRecordID>
    <Correlation />
    <Execution ProcessID="16004" ThreadID="14828" />
    <Channel>Media Center</Channel>
    <Computer>Eric-PC</Computer>
    <Security UserID="S-1-5-21-3026407376-1936420717-4019103078-1001" />
  </System>
  <EventData>
  </EventData>
</Event>
Log Name:      Media Center
Source:        Microsoft-Windows-Media Center Extender
Date:          12/10/2010 9:48:35 PM
Event ID:      575
Task Category: Configuration
Level:         Information
Keywords:     
User:          Eric-PC\Eric
Computer:      Eric-PC
Description:
Media Center Extender Setup started with the following settings:
Affiliation code: 159
Username: Eric
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="Microsoft-Windows-Media Center Extender" Guid="{7B7838A3-6562-4269-BB7A-97B0D9593882}" />
    <EventID>575</EventID>
    <Version>0</Version>
    <Level>4</Level>
    <Task>4</Task>
    <Opcode>0</Opcode>
    <Keywords>0x8000000000000000</Keywords>
    <TimeCreated SystemTime="2010-12-11T02:48:35.485869400Z" />
    <EventRecordID>423</EventRecordID>
    <Correlation />
    <Execution ProcessID="16004" ThreadID="14828" />
    <Channel>Media Center</Channel>
    <Computer>Eric-PC</Computer>
    <Security UserID="S-1-5-21-3026407376-1936420717-4019103078-1001" />
  </System>
  <EventData>
    <Data Name="AffCode">159</Data>
    <Data Name="User">Eric</Data>
  </EventData>
</Event>