Event ID 10128 errors are logged on a Windows XP master image for a Citrix XenDesktop VDA causing shadowing sessions with Citrix Desktop Director to fail

Problem

You’re attempting to use Citrix XenDesktop Desktop Director 2.1 to shadow a desktop catalog with Windows XP desktops but would continuously receive the error:

Failed to initiate Remote Assistance: You have insufficient permissions (error code 102). Refer to documentation for Remote Assistance configuration. View server event logs for further information.

Logging onto the Windows XP desktops and browsing the event logs show the following error logged:

The WinRM service is not listening for HTTP requests because there was a failure binding to the URL (http://+:80/wsman/) in HTTP.SYS.

No remote requests will be serviced on that URL.

User Action

Please use "netsh http" to check if ACL for URL (http://+:80/wsman/) is set to Network Service.

Additional Data

The error code received from HTTP.sys is 5: Access is denied.

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

Solution

This was only one of the issues that caused my attempts to shadow users with Desktop Director 2.1 to fail but what ended up fixing this error on the Windows XP image was a winrm command found in the following Citrix KB:

Enabling WinRM for Desktop Director
http://support.citrix.com/article/CTX125243

Once I ran the command:

winrm set winrm/config/Service @{EnableCompatibilityHttpListener="true"}

… the event log error found in the Windows XP desktops went away.