Is the tablet on the same network as the PC running ARC? Are you using the correct internal IP address if it is? Is Port 80 open on the PC running ARC (check firewall and anti virus software) What error is given when you try to connect to 192.168.2.12?

Yes the same. Yes I do. Yes because I am using another services with 80 port. The page is not available, ip config finds 192.168.2.17.

You are using the services which use port 80 on the same PC which you are trying to use HTTP server on port 80?

Try changing the port number in the HTTP Server config. Technopro mentioned the other day he could only get it working with a 4 digit port so try 8080 or something similar.

This is the error log, when I am trying connect from another computer, not from the same PC. I stopped all firewalls and intivirus prgms: 26. 10. 2014 22:43 - TCP Server stopped 26. 10. 2014 22:43 - TCP Server stopped 26. 10. 2014 22:43 - TCP Server stopped 26. 10. 2014 22:43 - TCP Server stopped 26. 10. 2014 22:44 - HTTP Error: System.OverflowException: Value was either too large or too small for an unsigned byte.

And yet these rows are shown too...

at .() at ?.(NetworkStream , , Int32 ) at ?.(NetworkStream , , String ) at ?.(Object )

Complete error log, when I am trying to log from Android tablet:

26.10.2014 23:12 - HTTP Error: System.OverflowException: Value was either too large or too small for an unsigned byte. .

v System.Convert.ToByte(Char value) v System.Linq.Enumerable.WhereSelectEnumerableIterator2.MoveNext() v System.Linq.Buffer1..ctor(IEnumerable1 source) v System.Linq.Enumerable.ToArray[TSource](IEnumerable1 source) v .() v ?.(NetworkStream , , Int32 ) v ?.(NetworkStream , , String ) v ?.(Object )

At what point do you get that error? I am unable to reproduce it. Can you try a reinstall of ARC?

Try changing the port, and putting your ip:port you changed to. Make it 4 digits.