JaariAtmc

Delete the hosts file. Your hosts file doesn't allow you to connect to Mojang's auth server.

Don't extract the Forge installer. Just rename it.

I wonder how many times I'll have to paste this: Forge changed things with 2854 and newer, you must use the Installer now, not the universal. You still need to re-name it to Modpack. And don't run the installer, just re-name it.

And that's wrong. You don't extract it. You just rename it.

I wonder how many times I'll have to paste this: Forge changed things with 2854 and newer, you must use the Installer now, not the universal. You still need to re-name it to Modpack. And don't run the installer, just re-name it. Also: https://micdoodle8.com/mods/galacticraft

Remove Java8u261. Install Java8u251. Do not upgrade Java for the time being. Link to 8u251: https://javadl.oracle.com/webapps/download/GetFile/1.8.0_251-b08/3d5a2bb8f8d4428bbe94aed7ec7ae784/unix-i586/jdk-8u251-macosx-x64.dmg

Just going to paste what I have done a dozen times now: Forge changed things with 2854 and newer, you must use the Installer now, not the universal. You still need to re-name it to Modpack. And don't run the installer, just re-name it.

Links to mods still required: https://www.curseforge.com/minecraft/mc-mods/coroutil/files/2902920 https://www.curseforge.com/minecraft/mc-mods/placebo/files/2694382 https://www.curseforge.com/minecraft/mc-mods/patchouli/files/2992184 https://www.curseforge.com/minecraft/mc-mods/rikmulds-core-mod/files/2569880 https://www.curseforge.com/minecraft/mc-mods/bookshelf/files/2836960 https://www.curseforge.com/minecraft/mc-mods/ctm/files/2915363 https://www.curseforge.com/minecraft/mc-mods/mysticallib/files/2912859 https://www.curseforge.com/minecraft/mc-mods/dark-roleplay-core/files/2783648 https://www.curseforge.com/minecraft/mc-mods/guide-api/files/2645992 https://www.curseforge.com/minecraft/mc-mods/ptrlib/files/2685154 NinjaGear is not available for 1.12.2, the 1.12.0 version you included is actually for MC 1.11.2 You also included the wrong version of ImmersiveEngineering, here's the right one: https://www.curseforge.com/minecraft/mc-mods/immersive-engineering/files/2974106 Also, your version of MysticalWorld is very outdated: https://www.curseforge.com/minecraft/mc-mods/mystical-world/files/2924136 After all these additions and changes, the modpack started and I was able to create a new world.

Remember the step where you need to rename the forge file to modpack.jar? Rename it to just modpack instead. Don't add the .jar. After this, you need to add a lot of dependencies. You can see those on your screen once you added: https://www.curseforge.com/minecraft/mc-mods/llibrary/files/2704186 https://www.curseforge.com/minecraft/mc-mods/shadowfacts-forgelin/files/2727070

Forge changed things with 2854 and newer, you must use the Installer now, not the universal. You still need to re-name it to Modpack. And don't run the installer, just re-name it.

Only java 8 is supported by Forge for almost all the modpacks you want to play.

This appears to be an issue with java 8u261. Downgrade back to 8u251. Yes, I know that's a pain to do.

Forge changed things with 2854 and newer, you must use the Installer now, not the universal. You still need to re-name it to Modpack. And don't run the installer, just re-name it.

Forge changed things with 2854 and newer, you must use the Installer now, not the universal. You still need to re-name it to Modpack. And don't run the installer, just re-name it.

You can't simply rename it to .zip, you actually need to zip it as a .zip.