Cannot write to the win7 registry key even when run as admin

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Hi All,

"UnauthorizedAccessException" exception appear when i try to create sub key in SOFTWARE\Microsoft\Windows\CurrentVersion\Run\.

try
            {
                string TypeLib = "TypeLib";
                Microsoft.Win32.RegistryKey key = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\Windows\CurrentVersion\Run\");
                RegistryPermission perm = new RegistryPermission(RegistryPermissionAccess.AllAccess, key.Name);
                perm.AddPathList(RegistryPermissionAccess.Create, key.Name + "\\TypeLibJD");
                string[] subKeys = key.GetSubKeyNames();
                if (Array.IndexOf(subKeys, TypeLib) >= -1)
                {
                    RegistryKey typeLibKey = key.CreateSubKey("//TypeLib" );
                    typeLibKey.SetValue("RunOnStartup", System.Reflection.Assembly.GetExecutingAssembly().Location);
                }
            }
            catch(UnauthorizedAccessException ex)
            {
                MessageBox.Show("Cannot Make This Application Run as startup");
            }

and i make this app run as administrator by writing this in app.manifest

<pre lang="xml"><trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
    <security>
      <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
        <!-- UAC Manifest Options
            If you want to change the Windows User Account Control level replace the
            requestedExecutionLevel node with one of the following.

        <requestedExecutionLevel  level="asInvoker" uiAccess="false" />
        <requestedExecutionLevel  level="requireAdministrator" uiAccess="false" />
        <requestedExecutionLevel  level="highestAvailable" uiAccess="false" />

            Specifying requestedExecutionLevel node will disable file and registry virtualization.
            If you want to utilize File and Registry Virtualization for backward
            compatibility then delete the requestedExecutionLevel node.
        -->
        <requestedExecutionLevel level="requireAdministrator" uiAccess="false" />
      </requestedPrivileges>
    </security>
  </trustInfo>

but the UnauthorizedAccessException still appear

Any help please.

Thanks in Advance.

Posted 12-Jun-11 9:42am

mohamedhbmaam

Updated 13-Jun-11 1:16am

v4

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5 solutions

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Richard MacCutchan · Answer 1 · 2011-06-12T09:47:00

Solution 2

Assuming you are trying to write into HKEY_LOCAL_MACHINE then you need to run with elevated privileges. Check the options available in the manifest section of your build properties.

Posted 12-Jun-11 9:47am

Richard MacCutchan

Comments

Wonde Tadesse 12-Jun-11 17:06pm

Correct. 5+

Kim Togo 13-Jun-11 2:31am

Correct my 5. Some many parts of the registry requires elevated privileges.

Sergey Alexandrovich Kryukov · Answer 2 · 2011-06-12T09:47:00

Solution 3

Sure, you need to run such application with elevated privileges. Even if you already logged as administrator, in Windows 7 you also need to run your application as administrator. See your Explorer context menu.

—SA

Posted 12-Jun-11 9:47am

Sergey Alexandrovich Kryukov

Comments

Wonde Tadesse 12-Jun-11 17:07pm

Correct.5+

Sergey Alexandrovich Kryukov 12-Jun-11 23:53pm

Thank you, Wonde.
--SA

Kim Togo 13-Jun-11 2:30am

My 5. Good answer.

Sergey Alexandrovich Kryukov 13-Jun-11 2:39am

Thank you, Kim.
--SA

Rajesh Lagaria · Answer 3 · 2011-06-12T15:19:00

run your application as administrator or use app.manifest in your project

change this code in manifest file :

XML

<security>
      <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
        <!-- UAC Manifest Options
            If you want to change the Windows User Account Control level replace the
            requestedExecutionLevel node with one of the following.

        <requestedExecutionLevel  level="asInvoker" uiAccess="false" />
        <requestedExecutionLevel  level="requireAdministrator" uiAccess="false" />
        <requestedExecutionLevel  level="highestAvailable" uiAccess="false" />

            Specifying requestedExecutionLevel node will disable file and registry virtualization.
            If you want to utilize File and Registry Virtualization for backward
            compatibility then delete the requestedExecutionLevel node.
        -->
        <requestedExecutionLevel level="requireAdministrator" uiAccess="false" />

      </requestedPrivileges>
    </security>

Vasili Baranov · Answer 4 · 2011-09-30T10:51:00

Please see http://stackoverflow.com/questions/4463706/net-windows-service-cannot-write-to-registry-key-unauthorizedaccessexception[^]

It's written there that RegistryKey.OpenSubKey(string) does not open the key for writing. Try using the OpenSubKey(string, bool) overload to specify that you want the key to be writable.

Please also note that administrator permissions are required if you are writing to the Registry.LocalMachine; on the contrary, writing to the Registry.CurrentUser doesn't require administrator permissions (current user has write permissions to its own registry key by default).

Ramalinga Koushik · Answer 5 · 2011-06-12T18:28:00

Solution 5

Hope this[^]might help you to solve your problem.

Posted 12-Jun-11 18:28pm

Ramalinga Koushik

Cannot write to the win7 registry key even when run as admin

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Cannot write to the win7 registry key even when run as admin

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