I have seen this before. It happens because there are some files missing on
Check the System Event log for any errors like the one below:
Log Name: System
Event ID: 4375
Windows Servicing failed to complete the process of setting package KB######
(Security Update) into Resolved(Resolved) state
If you see an event like that for one or multiple KB#'s, then try
reinstalling those updates.
If that doesn't resolve it, then try this:
1. Run System Update Readiness Tool on the server. Download it from
2. The System Update Readiness Tool creates a log file that captures any
that the tool found or fixed. The log file is located at the following
3. From the log, look for something like this in the results:
(f) CBS MUM
(f) CBS MUM
4. Try reinstalling the update package called out. In the example above, it
would be KB 960225.
5. If that doesn't fix it, you may just need to copy the missing files into
the C:\Windows\Servicing\Packages folder. You can try downloading and
extracting the contents of the update to get the file(s). Or you can try
getting them from another machine that has the update(s) installed.
This posting is provided "AS IS" with no warranties, and confers no rights.
"BadBoy House" <mrchrishouse@newsgroup> wrote in message
> I've come across a problem with the Roles section of server manager. I
> get error details shown below.
> I don't actually need to add any roles but of course want to fix this
> Has anyone seen this error before? What do you suggest?
> Unexpected error refreshing Server Manager: No signature was present
> in the subject (Exception from HRESULT: 0x800B0100)
> For more information, see the event log: Diagnostic, Event Viewer,
> Applications and Services Logs, Microsoft, Windows, Server Manager,
> Event viewer gives the following info:
> Could not discover the state of the system. An unexpected exception
> was found:
> System.Runtime.InteropServices.COMException (0x800B0100): No signature
> was present in the subject. (Exception from HRESULT: 0x800B0100)
> errorCode, IntPtr errorInfo)
> session, IntPtr& package)
> at Microsoft.Windows.ServerManager.ComponentInstaller.Initialize()