Wowza Community

Suddenly PlayReady contents is not played

I provide DRM content using Wowza Streaming Engine.

But recently IE11 and Edge browsers(ver.16) do not play playready contenti in.(windows10/html5/dash)

The server is not modified at all.

Playready contents pre-packed with the same content and the same encryption key will play well.

Why is this?

Have you ever faced the same situation?