I have a website which utilises App Cache and IndexedDb in a secure context (ie https://) to enable use offline. This works fine for most of the devices I have tested on. However on a Nokia Lumia 920 using IE11 mobile (which does support app cache), I get an error when trying to access the website offline after an initial load online to populate the cache.
The error is: Cannot find server or DNS error.
Since the browser does apparently support App Cache, I do not understand why this error occurs on this device. On all other devices I have tested on it works fine. Including IE11 on Windows desktop.
Does anyone know why this error occurs?
I am aware that the device and AppCache itself are deprecated.