OS5 seems to be a complete effing disaster. I can’t believe how bad OS5 is compared to OS3, was there even an OS4? Does Western Digital appear to know what they’re doing when they
rollout such a major change? They had literally rendered my PR4100 32TB RAID 5 (24 usable) useless as a DLNA/UPnP media server which was its primary purpose. I use it to store 1000’s of movies and video files from drone use. See the changes here My Cloud OS 5 & OS 3, The Key Differences in Device Features Nothing mentioned about the DNLA feature.
The DNLA feature has been completely removed from the interface menu. It used to reside under Settings->General I think. There was a function to enable or disable the feature via a blue switch. Now there is absolutely nothing to configure. I used to use it to stream directly to my PS4s Media Player. It worked great as long as you had a format playable on PS4. Also used it to stream to my Amazon FireStick via a 3rd party app that functioned as a DLNA/Samba client. This feature also worked great. I have 1000’s of movies downloaded over the years. Neither one now can see the my PR 4100 now. The short term workaround is using my iPad or iPhone OS5 app to stream the movies to my TV via that same 3rd party app on my Firestick that imitates an Apple TV. I loved being able to directly stream using my Sony PS4. So angry about this. Of course I can’t use my phone or iPad while streaming as it will interrupt the playback. There is a suggestion to install Plex or Twonky media servers in the OS5 upgrade website. 3rd party apps that will have access to my media file. I would have to set up an account to link it through an app available on my Firestick. Are you effing kidding? Admittedly, almost all my movies are torentted. With the DNLA option I had secure streaming with no 3rd party interference. The Plex app has in app purchasing blah, blah. I installed it via the Apps menu under the interface. Sure enough, Plex is much like any other media streaming service, Netflix, Prime HULU etc. I don’t effing want it. Uninstalled and I didn’t create an account. Unless I’m wrong, the DLNA media server option has been completely removed from the login interface. I don’t believe it will function as a DLNA media server anymore. At my wits end I installed Twonky, from the Apps menu under the interface. And poof like magic, I could see my my PR4100 on my PS4 again. Same with the Firestick and probably an Apple TV. No account needed. But is it permanent? On the Twonky website https://twonky.com it says I would need a license after 30 days. Is it part of the included software package for OS5? Will I be required to pay for something that was built in previously? And yes it works perfectly now. No issues to report. I just wish WD had said mentioned this in the upgrade info. Which they didn’t making this an entirely frustrating, time wasting and awful experience. WD has done its customers such a huge disservice with this upgrade. I believe the DNLA feature is one of the most popular reasons for have a Mycloud. This is such a poorly run company with inferior engineers, I won’t be purchasing WD in the future when it’s time to upgrade. I hope this helps others trying to find a solution for this issue. 
