IIS Manager Windows 11 not showing any site

Question

I'm running a fresh installation of Windows 11, most IIS features are enabled, and IIS Manager doesn't show any site or the web server.

• IIS Manager and IIS Version (10.0)

• Features

• iisreset /status

   Status for Windows Process Activation Service ( WAS ) : Running 
   Status for World Wide Web Publishing Service ( W3SVC ) : Running

What I've tried:

• Disable and reenable features
• Check for corrupted files following https://support.microsoft.com/en-us/topic/use-the-system-file-checker-tool-to-repair-missing-or-corrupted-system-files-79aa86cb-ca52-166a-92a3-966e85d4094e There were none.
• Did the above three times
• In the Event Viewer, there are no errors in Windows, but there is something in Custom Views / Server roles / Web Server:

    Log Name:      System Source:        Microsoft-Windows-IIS-APPHOSTSVC 
Date:          22/02/2023 14:44:53 Event ID:      9000 
Task Category: None Level:         Error Keywords:      
Classic User:          N/A Computer:      Desktop      
Description: The Application Host Helper Service encountered an error while reading the data for SID mapping.  Please ensure that the application pool name data is correct in the configuration file.  To resolve this issue, please recommit the changes or restart this service.  The data field contains the error number. Event Xml: http://schemas.microsoft.com/win/2004/08/events/event">             9000     0     2     0     0     0x80000000000000          8182               System     
Desktop                02000780 

• IIS Manager launched as Admin

I restarted the service Application Host Helper with no effect.

Answer 1

Hi @Daniel Piret,

Do you have antivirus software similar to Malwarebytes installed in your windows11 system? If so, try temporarily disabling your antivirus software and uninstalling all IIS features. Then restart your computer, making sure the antivirus software is still disabled after restarting. Finally, re-enable the IIS function to see if it can solve the problem.

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Yurong Dai