Upgrading to PetWin 4.1.1

When upgrading from PetWin 3.1 to PetWin 4.1 the link below will provide you with a full installation, including the latest device drivers. Please note that this upgrade will not affect older PetWin versions (PetWin 3.1 and earlier) which are separate applications. This means that users can keep their older copies of PetWin.


  • Annual License customers and academic customers can upgrade free of charge at any time via the link below.
  • Perpetual License Customers who acquired PetWin after June 1, 2014 can also upgrade to PetWin 4.1 free of charge – if you are prompted for a new code, please contact us.
  • Customers who acquired PetWin prior to June 1, 2014 may order an upgrade here for US$4,500.

PetWin updater will not automatically upgrade PetWin 3.1 to PetWin 4.1. You MUST run the full installation from the link provided. Thereafter the updater will always be checking that your files are up to date.


  1. Click the download button below.
  2. Click Save to save the installation file to your computer.
  3. When the download is complete locate the installation file pw41setup.exe and run it.

Do not plug in your SafeNet Key until the installation is complete. PetWin 4.1 requires a License Activation Code – when you first run the program you’ll be prompted to enter the code. For Annual License and academic customers, your current activation code is valid for PetWin 4.1, simply enter and apply this code to activate PetWin 4.1. For Perpetual License customers, you can click here to order the upgrade to 4.1.

Note : Files created in older versions of PetWin can be loaded in PetWin 4.1, but not the reverse. We suggest that old files opened in PetWin 4.1 should be saved in a separate directory from the original files.


New Developments in PetWin 4.1
We have prepared a New Developments in PetWin document for PetWin 4.1 in PDF format. This will help get you started in PetWin 4.1; more comprehensive information is provided in the manual. Click here to download the New Developments in PetWin document.