Remote Playback of recordings on iVMS4200 Storage Server

Hi!

I have been going round in circles and hope someone can highlight where I might have made a misconfiguration.

I have iVMS4200 2.5.1.7 running on a server, which installed v1.2.1 of the Storage server component. Cameras are recording to the storage server and I can playback the recordings.

Outside of the network, I can connect to the external IP of the Storage server on an iphone, using iVMS4500. Remote playback of the recordings works fine.

I cannot get any PC running iVMS4200 to...

Remote Playback of recordings on iVMS4200 Storage Server