How to Fix 'Requested Registry Access is Not Allowed' Errors in Windows Due to UAC?

UAC Access Denied: Resolving "Requested Registry Access is Not Allowed"

While modifying registry keys under HKEY_CLASSES_ROOT typically works smoothly in older Windows versions, users may encounter the "Requested registry access is not allowed" error in Windows 7 and later. This stems from the implementation of User Account Control (UAC), which restricts certain system operations to elevated privileges.

To address this issue and ensure UAC compatibility, the following code modifications are necessary:

<?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>

By adding this XML manifest, the application explicitly requests elevated privileges (requireAdministrator) without a user interface prompt (uiAccess="false"). This allows the application to access protected registry keys and perform necessary modifications without triggering the "Requested registry access is not allowed" error.

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