- Download the Microsoft Purview Information Protection Viewer via the following link:https://www.microsoft.com/en-us/download/details.aspx?id=54536 
- Run the downloaded file “PurviewInfoProtectionViewer.exe”. 
- Click “Install anyway” if prompted 
- Click “I Agree”. 
- Select “Close” after the installation is completed. 
- Double click a protected document (e.g. .PPDF,.PJPG, .PTIFF, .PTXT) 
- Sign in with your HKU Portal UID (UID@hku.hk for staff and (UID@connect.hku.hk for students) and PIN if prompted. 
- The protected document will be opened by the PIP Viewer. 
- You can view the permission granted by clicking the “View Permission” button.