So once a month I'm having this problem where I can't connect to any servers with 1.8 but I can with 1.9, this makes it so I can't play on the servers that are only for 1.8.  How can I fix this?
967
Similar to  on the bugs in Minecraft, I would like a complete list of what error codes exist in Minecraft and how they occur, as well as how they can be resolved.
69877
I have a Dedicated Bedrock Server running on my PC, and I can't connect from the same PC where the server is. If I add it onto the list of servers, it appears as "Locating server" and never finds it.    If I try to connect, I get "Unable to connect to world".    On my friend's PS4, it appears on the Friends tab as a LAN Game on a Dedicated Server.    And also on my sister's laptop.
90662
I have just updated to Minecraft 1.7.4 and now all of a sudden there are barely any mobs spawning.  I checked to make sure that I was in normal difficult and I saw 1 creeper but that is all.  Also I tried different difficulties. Another thing - mobs seem to to spawn normally in the nether and all other mobs except aggressive mobs spawn like they should.  Please if you know how to fix this, please help!
61487
I can't play online. I can only play solo. I have bought Minecraft so it should work fine, but, when I try to connect to a server, it says:  Internal client error: java.net.UnknownHostException: session.minecraft.net   I have tried over 20 different servers and it says the same thing for every single one.   Note: These are not Hamachi servers. I'm attempting a direct connection.
86578
Occasionally I will get a message from TF2 about being unable to connect to the item server, and I will be stuck with a pure stock loadout.  What is strange is everyone else on the same server will have all of their items.  How can I restore the item server connection?  It must be a problem on my end - if the item server were down, everyone else should be using stock loadouts with no hats as well.  Note: I know about the heartbeat console command.  That is for servers, not clients and does nothing for me.
121115
Me and my friend don't play on realms, but we can join each others world on Minecraft Pocket edition. The thing is he can always easily access my world, but sometimes I can't always get on his world. It's odd actually, once when I was trying to join his world the screen just went blank.  Instead of loading the server/world, where is the dirt background and it writes "locating server" on it but, it didn't show the "locating server". It just displayed the dirt background. Then it said: "unable to connect to world". Even though we both have the same version of Minecraft Pocket edition. My question is: How come I can't join his world?
70003
Recently, I've changed my VPS operating system from CentOS to Ubuntu. Unfortunately since then I can't connect to my VPS. The following message comes again and again (screenshot attached).  Why this is happening and how can I solve that?
82476
Is there any way you could revive Guest Sessions in a future LTS distro?  Guest sessions are good security - they give me just enough power to do what I need to do on a daily basis without risking my system. In short, Guest sessions save me from myself.  I had upgraded from 16.04 to 18.04, gotten a problem I couldn't fix and was all to happy to wipe and rebuild my hard drive and return to 16.04.  I can't be the only one who feels this way.
15447
Upon entering any given minecraft server, after a minute or two I am forced out of the server, and I'm given the following error:  java.io.IOException: An existing connection was forcibly closed by the remote host.  What does this mean, and how can I prevent it from happening again?
97478
It seems like everyday I go to publish a service or connect to my SDE I get messages that I can't connect. It is particularly annoying when trying to publish a service to ArcServer. The connections are made, but for some reason they are timing out or becoming temporarily disconnected for whatever reason (Red X over the connection icons).  The fix is simple: As soon as I open Catalog and then double click on the connection, it re establishes connection and then I can do what I need in ArcMap. However, ideally I would like to stop this behavior.  Any ideas why this is happening? Can't find much in the help and it has been mentioned by several users in my organization.
3905
My LAN server won't let my cousin join me or me join my cousin. It won't show up on the multiplayer screen - it keeps saying "scanning for LAN servers" but it never finds it. I am at his house and we use different computers but it won't connect. How can I fix this?
111608
When I try to connect to a minecraft server, it says     Failed to login: Invalid ip 123.123.123.*   Giving me my IP address with the last octet asterisked out.    Now the Minecraft launcher forgets my logged-in accounts, which is unusual.    Now I can't log into the launcher nor the website, Mojang tells me I have an invalid email or password.
60636
I have a problem.I can not find my jar folder for minecraft.I have 1.7.4.So does anyone know where the jar file is?
25838
Trying to connect my from son's iPod 4 to my iPod 4s. Both are using iOS6, both playing Minecraft version 8.1. My iPhone joins to my iPad no problem but not to the iPhone 4. If I try to connect from the iPhone4 it says 'outdated server' if I try to connect from my iPhone 4S the wifi world from the iPhone4 doesn't even show up as an option to connect to.  Same version same wifi network, what am I missing?
17308
My friend had hosted a Minecraft server before and brought it back up today with my help. He and anyone in his LAN can connect. However we have had a few people try to connect, including me, and when we try to connect it gives the message:  Failed to connect to the server Connection timed out: connect  What does this exactly mean? How do we fix this?
82717
Not a problem, but have been seeing questions recently of people not being offered upgrade from 18.04 to 20.04.  I thought these upgrades were offered back in June.  I upgraded to 20.04 from 19.10 and this was offered back in May.  Imagine that different versions paths have different schedules, but google does not help explaining(that I found).  Does someone know the schedules?
52631
How do I downgrade Minecraft to play on a server running an older version?