As mentioned above, you need to clear the cache. It helped me personally! It also happens that it is an update that blocks the regular operation of the application, so if the solution with clearing the cache does not help you. Then you will need to wait until a new patch fix for this problem is released, and then everything will be fine By the way, I had this problem with my computer. When I tried to log on to one of the servers that I found on the list of Minecraft servers minecraft.buzz, it crashed. And I waited for the fix patch for more than a month, but after that, everything fell into place. So you'll have to wait.