IAutomaticUpdates2::EnableService returns Access is denied even when run as administrator

David John 1 Reputation point
2022-11-25T11:13:26.783+00:00

I'm using the COM interface to access the Windows Update API. I get access denied when i call IAutomaticUpdates2::EnableService even though i am running as admin.

Code

   fn enabled_windows_update() {  
       unsafe {  
           Com::CoInitialize(None).unwrap();  
       }  
     
       let gid = windows::core::GUID::from("BFE18E9C-6D87-4450-B37C-E02F0B373803");  
     
       let mut handle: windows::Win32::System::UpdateAgent::IAutomaticUpdates2 =  
           unsafe { Com::CoCreateInstance(&gid as *const _, None, Com::CLSCTX_ALL).unwrap() };  
     
       println!("{:?}", unsafe { handle.EnableService() });  
   }  
Windows API - Win32
Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
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Windows 11
Windows 11
A Microsoft operating system designed for productivity, creativity, and ease of use.
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2 answers

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  1. Castorix31 83,101 Reputation points
    2022-11-25T13:56:41.087+00:00

    I tested in C++ on Windows 10 21H1 : I also get E_ACCESSDENIED,
    but if I check the "Windows Update" service in services.msc, it becomes enabled (Manual) ...


  2. Xiaopo Yang - MSFT 12,226 Reputation points Microsoft Vendor
    2022-11-29T01:46:23.737+00:00

    You can use Service Configuration Programs and Service Control Programs to modify or query the database of installed services and starts and controls services respectively.
    There is a Complete Service Sample.

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