Sorry, the last logs were from the server since the client performs the same when I add ip instead of hostname with guide but loss of connection when I try to play a channel. New logs from client added also.
Okay. If that's the case you need to provide simultaneous logs for both client and server.
I'm not able to do anything with the logs you've provided as they're not simultaneous. If you export a new set of logs from the server I can take a look.
I can't see anything wrong with the server now (ie. it isn't crashing like it was before), so that is good. However, there's nothing obvious to explain the disconnection in either the client or server logs. In other words: it is a bit puzzling.
My gut tells me there's some kind of connectivity, security or client-side issue. Especially considering the issues you had trying to use the hostname for connections.
PS: Please continue to leave the firewalls on both server and client down while you do these tests.
PPS: It looks like you may be using DJBlu's non-standard version of MP/TV Server. If you are, make sure you've installed the same version on clients as well as server. If you are, please also be aware there is a limit on how much support I can provide. I have no idea what unexpected side effects non-standard versions might introduce. That's why we expect people that publicly distribute modified versions of MP/TV Server to provide support for the people that choose to use them.
Have tried the IPv6 by unticking the setting in both network adapters but not yet in the registry without any luck.
The VLC stream works fine without any modification of firewall or IPv6.
I may have to try the standard build and see if the problem persists before requesting help from the DJBlu developers.