title: Override Windows environment variable value?
body: <p>I want to permanently change the value of the "Username" variable of Windows to fix a problem of my Windows 8 with the user profile folder name.</p>
  
  <p>I've tried  to set a new environment variable using SETX tool like this:</p>
  
  <pre><code>SETX /M Username "value"
  </code></pre>
  
  <p>...The new variable is generated, I can see it in the registry with the other variables, but is not overrided 'cause if I try to display the value of Username variable the it displays the old value.</p>
  
  <p>Is it possibly to do what I want?</p>