There may be several reasons you would be unable to connect to your own server on Minecraft. First check to make sure you have not typed in the Ip address wrong. Second, make sure you are running the latest Minecraft server software(You have to download a new version after every Minecraft update). Thirdly, you cannot connect to a server using the computer that is running the said server.
It may not be stable
We are unable to answer that question because we do not know information about personal servers. You will have to ask the administrators/ops on the server.
Some servers operate on a global blacklist, meaning if you get banned on one, you could be added to the blacklist and be unable to go on any other server that uses it.
To login on minecraft, you need those things: A premium minecraft account Internet If you have both, and it still doesn't work, I can't help you.
If you are unable to connect to the Minecraft login server after you open Minecraft on your computer first ensure you are able to go to Minecraft's website in your browser. If you are able to, make sure that Minecraft.exe is not blocked by your firewall program.
Unless you are staff member on the server, you will be unable to unmute yourself. When muted, it is either permanent, a staff member will manually unmute you or the server consol will unmute you after a set amount of time. Do NOT try to hack, as this will only get you in deeper trouble. In some cases, hacking can be punishable by law. Just wait it out.
It means that the server you are trying to communicate with is not responding to requests, for a multitude of reasons.
As of 01 May 2015, you are unable to get a horse in minecraft PE, it may be added in a future update.
Students and professors will be able to Telnet to the server but unable to FTP files to and from the server.
Students and professors will be unable to Telnet to the server or FTP files to or from the server
The System Administrator is on LAN but he unable to connecting to the server in this case there are many reason behind that. 1st check the connectivity. Means the HOST is physically connected to the network or not. by using PING command. 2nd check the password of the server.