Windows Server 2012 R2, IIS won't install, no errors shown

I have wasted nearly a day on this.

I have a fresh Windows Server 2012 R2, fully up to date, that I am trying to install IIS on.

I run the add Roles and Features wizard, select my required features, but the install fails without an error message.

I am unable to find any logs or details to help me trouble shoot what could be wrong.

Task Details shows me nothing:

Could someone please point me to somewhere that could explain my lack of success, or even better, let me know how to get IIS to install?

I had the exact same problem. Could not get any information about what was wrong. However from microsofts own guide there is an option for installing through cmd with:

  Start /w pkgmgr /iu:IIS-WebServerRole;IIS-WebServer;IIS-CommonHttpFeatures;IIS-StaticContent;IIS-DefaultDocument;IIS-DirectoryBrowsing;IIS-HttpErrors;IIS-HealthAndDiagnostics;IIS-HttpLogging;IIS-LoggingLibraries;IIS-RequestMonitor;IIS-Security;IIS-RequestFiltering;IIS-HttpCompressionStatic;IIS-WebServerManagementTools;IIS-ManagementConsole;WAS-WindowsActivationService;WAS-ProcessModel;WAS-NetFxEnvironment;WAS-ConfigurationAPI

For whatever reason this worked while the wizard did not.

I run into this error while trying to install Request Monitor feature of IIS. In order to troubleshoot it, I would recommend checking:

• CBS logs (C:\Windows\Logs\CBS)
• DISM logs (C:\Windows\Logs\DISM)
• ApplicationHost.config file (C:\Windows\System32\inetsrv\config)
• The output of Dism /Online /Cleanup-Image /ScanHealth command
• Procmon logs (Use Process Monitor tool)

In my case Procmon logs showed PARSE_ERROR_INFO while reading applicationHost.config file which was corrupted. Reinstalling IIS solved the issue. 0x800f0922 Update IIS-RequestMonitor of package IIS-WebServer-Core-Package failed