This error appears when you try to read the scheduled jobs you've created and Device Guard is enabled.
When I'll receive the answer, I apply the downgrade (adfonline post, thank you adfonline for th tip ! DS415 - 6.0.2-8451 update 7 Media server - 1.6.2-2770 Really getting tired of this ...I'm using a DS211j and use the Media Server package to stream music either on my laptop via Media Monkey or Foobar or to my Entertainment System via an Oppo UDP-203 or straight to my Denon AVR X6300H.I also stream via HEOS on my phone or an Android based Pioneer XDP-100.In recent weeks I am finding that I quite often need to stop and restart media Server on my NAS so it can be accessed from my various devices.Everything worked perfectly on both of my Synology NAS devices before the latest update to the media server that occurred automatically within the past two days.Is there any way to downgrade the media server update to the previous version?This I learned via my very helpful twitter friend Florian Klaffenbach While an update for the system firmware is in the works and won’t be to long away let me share you how I dealt with this issue. You’ll have to test it yourself or wait for the firmware update that is coming soon. If you installed earlier updates, only the new fixes in this package will be downloaded and installed on your device.Why is it that every time there is an update is gets broke ????Using DLNA with my LG blueray player and after 2 movies I get " Cannot play this file " ... I have reset everything and it still says the same thing.