Use this page to update existing Windows or Macintosh RATS licenses to version 10.0, or to upgrade from the standard version to the Professional version of RATS. For updating a UNIX/Linux license or switching an existing Windows or Mac license to UNIX/License, see UNIX/Linux updates.

Note: If your serial number begins with WX (Windows) or MX (Macintosh), you have the Professional version. If it begins with WE, WP, WS (Windows), MP, or M2 (Macintosh), you have the standard version.

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