Run the application as "Run as Administrator". Right click on your application then click "Run as Administrator". Now, your application will work properly.
Or
Change UAC settings in your project. Right click on your project in the solution explorer, then choose properties. Click "View UAC settings" in Application Tab.
Modify the following
<security>
<applicationRequestMinimum>
<defaultAssemblyRequest permissionSetReference="Custom" />
<PermissionSet class="System.Security.PermissionSet" version="1" Unrestricted="true" ID="Custom" SameSite="site">
<IPermission class="System.Security.Permissions.EnvironmentPermission, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" version="1" Unrestricted="true" />
</PermissionSet>
</applicationRequestMinimum>
<requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
<requestedExecutionLevel level="requireAdministrator" uiAccess="false" />
</requestedPrivileges>
</security>
Save and rebuild your application. Now, It will work fine