Ok so this is very strange. Apparently it fixed automatically at me and i think this is what happened. 1. So first i found out the the error happened 1 day after i arrived in a other country ( due vacation ) 2. I tried to run technic packs on my other os (OSX since i have a macbook). 3 It didn't work there too as at my brother it didn't do. So it had to do something with the network IP 4. I tried to run minecraft. That showed up: sorry we cant connect to our server please make sure that you are online and mincraft is not blocked. 5. Then i asked my friend if he can play minecraft. He said yes so the servers werent down for sure. 6. I got told that the acc got blocked by mojang for a check and it will work again in 1-2h. A guy told me this on a mojang support chat. 7. Well nothing happened after 2h. So i desided to try it again the next day. 8. it said again sorry we cant connect to our server please make sure that you are online and mincraft is not blocked. but this time in the brackets under it (where the error code is shown) there was something other than before. 9. So finally today it works without problem and this is what i think: Mojang is blocking minecraft connection when you switch the ip adress and try to connect to mojang from a other laucher then usually. Mojang believes the owner of the ip uses a cracked launcher that can log into acc without premission. Mojang then blocks the acc for a period so that the hackers think its no longer possible to play minecraft with the launcher. Why did the technic launcher not work then? Technic runs on modpacks etc. But it runs too on the mojang minecraft servers so it can connect with normal minecraft acc. Due that the launcher times out and is still trying to connect the launcher freezes for a time and the launcher button is black. The connection fails but the launcher ignores that and doesn't show a error up. This is my theory. Pls write your opinion to the strange thing that happend