DaemonUmbra

What launcher are you using? Please provide a screenshot.

https://mcforge.readthedocs.io/en/latest/concepts/sides/

Threads merged.

Optifine specifies the version of Forge that each version is compatible with in the changelog of each version, look there

Your server slowed down so much that it killed itself. What kind of hardware is your server running on?

Please provide URLs to where you are downloading Forge from.

Please read the Logs section of my signature below and provide the appropriate log in the appropriate manner.

ID conflicts should be a thing of the past, what version are you playing?

Triple whammy, Necromancy Hijacking Piracy User was banned for Piracy

I see nothing here about the server disconnecting you, please provide debug.log from both client and server

It looks like Twitch may have screwed up the installation process, try repairing the instance

Please read the Logs section of my signature below and provide the appropriate log in the appropriate manner.

This is a launcher bug, the only thing you can do is manually download the file and replace the broken one. https://bugs.mojang.com/browse/MCL-12570

Please provide a screenshot

It's a launcher bug, the only thing you can do is manually download and place the file. https://bugs.mojang.com/browse/MCL-12570

Instead of invoking "java", use the full path to the Java 8 java.exe

Please don't necro old threads, especially when you are hijacking at the same time. Please make your own thread and include logs.

If you download the file directly from the URL is the size of the launcher's copy about twice the size of the one your browser downloads? If so then it's this launcher bug: https://bugs.mojang.com/browse/MCL-12570

If you download the file directly from the URL is the size of the launcher's copy about twice the size of the one your browser downloads? If so then it's this launcher bug: https://bugs.mojang.com/browse/MCL-12570

Please read the Logs section of my signature below and provide the appropriate log in the appropriate manner.

What launcher are you using? Please provide a screenshot.

What launcher are you using? Please provide a screenshot.

1. It looks like you're trying to mod a version we don't support anymore, update to receive support. 2. If your school blocks it and you can access it at home, why do you need to use school computers?

Please read the Logs section of my signature below and provide the appropriate log in the appropriate manner.