How Can I Fix 'Requested Registry Access Is Not Allowed' Errors in Windows 7 and Later?

Requested Registry Access Is Not Allowed: Resolving UAC Issues in Windows 7 and Later

In Windows 7 and subsequent operating systems, developers may encounter the error "Requested registry access is not allowed" when attempting to modify registry keys under HKEY_CLASSES_ROOT. This limitation arises from User Account Control (UAC), which restricts access to sensitive system settings.

To rectify this issue and add UAC support to your code, consider implementing the following solution:

Modify your application's manifest file (app.manifest) as follows:

<?xml version="1.0" encoding="utf-8"?>
<asmv1:assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1" xmlns:asmv1="urn:schemas-microsoft-com:asm.v1" xmlns:asmv2="urn:schemas-microsoft-com:asm.v2" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
   <assemblyIdentity version="1.0.0.0" name="MyApplication.app" />
   <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
      <security>
         <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
            <requestedExecutionLevel level="requireAdministrator" uiAccess="false" />
         </requestedPrivileges>
      </security>
   </trustInfo>
</asmv1:assembly>

This modification grants your application the necessary privileges to access the protected registry keys, allowing it to successfully perform the desired modifications.

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