Server Roles and server features are not listed, or may be giving an error, or switching to you to a main server manager window.
Add/Remove software list is empty
Windows patches are not installing
Windows Modules Installer service (Service Name: Trusted Installer) doesn’t start and error is logged “windows could not start the windows modules installer service on Local Computer. Error 126: The specified module could not be found”
Winsxs folder permissions are changed, Files are deleted from WinSXS folder.
Inappropriate change of a registry subkey: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Component Based Servicing\Version
Locate the C:\Windows\Servicing\Version directory, and note the name of the subfolder in this directory. It will be named something like “6.1.7600.16385.” This is your TrustedInstaller ID.
Copy the subfolder name to the clipboard, and then paste it into Notepad for safekeeping.
In the C:\Windows\WinSxS directory, find a subfolder whose name begins with one of the following strings. (In the following subfolder names, the placeholderTrustedInstaller ID represents your TrustedInstaller ID.)
For 32-bit Windows
For 64-bit Windows
Create the following registry subkey:
HKLM\Software\Microsoft\Windows\CurrentVersion\Component Based Servicing\Version
On the Version key that you created in last step, create an expandable string value or edit if it is already there . use the TrustedInstaller ID as your name, and use the full path of the folder that you identified in step 3 as the value (for example: %SystemRoot%\WinSxS\folder_name instead of C:\Windows\WinSxS\ folder_name)