Minecraft Error: Failed to Login: Invalid Session (Try Restarting Your Game)?

Well I want to play a multiplayer server with my friends on minecraft… I don't understand the error I've looked it up. Still nothing. I did the obvious… I tried Restarting the game. Yeah I have hamachi, and the.jar file in… I have it all connected to the Server Properties File. The IP in it and online mode is on false. Aggravation (/ ) What do I do to fix this?

Added (1). *Edit*
I'm hosting the server… I remember hearing somewhere when you turn Online Mode to false cracked versions of minecraft can play? Or is that wrong? I'm playing on a cracked version of minecraft and I have no idea what Bukkit is?

I'm looking for a good survival game for the PC?

They don't need to have enemies like zombies or wild animals, but I'm not against that either. I prefer ones that seem kind of like a simulation (meaning you have to eat, drink and maybe sleep to survive). I've played WarZ and loved it, but I don't very much like the mmo part. I mainly enjoyed that loot/equip system where they are specific slots for items or ones where you have to rearrange items in your bag to make them fit. It reminded me of RPG games I played as a kid and made it feel more "real" so to speak. Graphics are not a big issue with me, but I would prefer them to be decent enough (NOT Fallout 1 and 2 graphics). The one's I've played that I can think of are listed below, so refrain from posting those. Thank you in advance.

The full Fallout series since one
Infestation Survivor Stories (The WarZ)
7 Days to Die
All of the Elder Scrolls since Daggerfall
Farcry trilogy
Minecraft
Miasmata
Fallen Earth
Arma 3 (if you could count that)

That's all I can think of for now.

Added (1). Another thing, it doesn't have to have a story. I'm fine with being thrown into a world and told to just survive.

Added (2). I should also add, co-op is always good. Meaning, I can invite someone to join my server or my game privately without the worry of it being filled to the brim with griefers.

Minecraft - Multiplayer Server to Singleplayer?

So there's this multiplayer map, that i didn't create (its a public server) and i would like to find the perfect spot to build but i don't want to spend hours walking and trying to find it. Is there a way that i can convert this server into singleplayer, without having access the the world folder or anything?

Need a minecraft server professional?

I need somebody to help me with a few things. Add me on facebook (Jaden) then send me your skype
I'm a half noob half not noob.

Make a modded lan server in minecraft?

I was wondering if I could have mods on a lan server so some friends and I can play minecraft modded on lan

Added (1). or maybe link me to a video that might help, Thanks

Nodus hacked minecraft client?

When using the Nodus hacked minecraft client for 1.7.2, I can't use a cracked account online. I would like to know if there's a way to bypass this on servers, even if they are internet mode enabled true.

Game Recommendations for me? (PC on STEAM)?

I recently got a $50 dollar gift card and was planning to buy DayZ and Rust, but all the reviews say they are bad games. I have a computer that can pretty much run any game. I would like the games to be fairly cheap, but if they are worth it, I'll consider it. I have 50 dollars, what should I get?

Genres I Like
FPS
RPG
Sandbox Survival (like minecraft)
3d
Action
Adventure
Casual

Genres I dislike:
Racing
Sports

Things I like in a game:
Customization
Fast-Paced
Freedom (Besides FPS)
Multiplayer (Private Servers/LAN)
Less than $30 (If a game is more than that and worth it, I might still get it)
Strategic (Like Chess or Counter Strike)
Single Player

Things I Dislike in a game:
Horrible community (Getting Killed right as you spawn with nothing on multiplayer)
Broken (Buggy, like BF4 with it crashing because of a "Direct X error", or DayZ with it being in Alpha)
Boring

Some game I like include Battlefield, Assassin's Creed Series, Elder Scrolls Series, Team Fortress 2, Call of Duty Series, Garry's Mod, Minecraft, Solstice Arena, and I'm anticipating on the game "The Forest".

I have considered Borderlands series but I'm not quite sure about it

Any game recommendations like these?

MINECRAFT CHUNKS ERRORS?

When I join a server or singleplayer world, I can't see anything. I downloaded different driver, deleted and re installed minecraft, changed chunk view. What is wrong with my minecraft?

How to make a custom ip for your Minecraft Bukkit Server?

I'm making a server and I want a custom ip instead of numbers, how do I make it so it will be something like play.herpderpgames.org (or org). I've seen ips like that but it has.no-ip. In it, and I don't want that.

I have a problem with my Minecraft bukkit server? - 1

The problem is that i set the online mode to false (in server.properties) but when i start the server it changes automatically to true. Can someone please help me?