When parts of the PI system are down for maintenance, it might be a good idea to redirect PI Vision users to a webpage to indicate the system is not available due to maintenance.


Digging around, it turns out this is a stock feature of IIS. How to use:

  1. Create a placeholder HTML page with the filename "app_offline.htm". You could generate one here: http://appoffline.appspot.com/
  2. Place the app_offline.htm file in the PI Vision root folder. This is typically located at C:\Program Files\PIPC\PIVision


And presto! No more PI Vision.


When done. just rename the app_offline.htm to e.g. app_offline_DISABLED or something similar, and PI Vision should return to normal operation.