DaemonUmbra

Please provide the debug.log from both the client and server.

This is irrelevant. You need to use Java 8 to launch any pre-1.13 Forge version.

Please do not hijack threads, if you have an issue please make your own.

You're trying to load an ancient coremod in 1.12.2, this is not going to work

Where are you getting your mods?

No, please do NOT automate Forge installation.

Toss it out and follow a tutorial that's not a pile of poo. I recommend Cadiboo and Cubicoder's tutorials.

There is no other way than getting the new installer.

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

Provide a new log?

Update to the latest version of Java 8: https://adoptopenjdk.net

How can you tell it's not loading mods?

Please don't necro old threads, if you have an issue make your own thread.

Try removing Optifine

What launcher are you using? Please provide a screenshot.

That would require trusting the client, which you should never do.

Why do you think this would be different between IDEs?

Please provide your installer log, it will have the same name as the installer but with .log on the end: Installer: forge-{version}-installer.jar Log: forge-{version}-installer.jar.log Note: If you have Windows Explorer set to hide file extensions(as is the default setting), they will look like this: Installer: forge-{version}-installer Log: forge-{version}-installer.jar

I don't recommend changing to the Jar Launcher because it is outdated and not guaranteed to work with Forge. The Native launcher is what is targeted now. Also there is a video of me going through the steps if you find the written steps confusing.

Foamfix appears to be colliding with another coremod.

It looks like you had OTG installed at one point and then removed it. Unfortunately OTG installs a component of itself into a 1.12.2 folder in your mods folder that tries to run whether the rest of the mod is there or not, and when the rest of the mod is NOT there you get this error. Just remove the otgcore file from the 1.12.2 folder.

You should not be extracting Forge. Just run the installer and make a launcher profile/installation, then select Forge as the version.

There is no need for anything chromium to be packed with Forge. Quick reminder that anything Forge is Open Source on GitHub.

There is nothing Lex or any other member of the Forge team can do without resources they don't have. Couple that with the fact that many of those sites are hosted in countries that don't abide by US Copyright law... Best I can do is recommend that you and your friends read up on the StopModReposts project and install their browser extension, which will alert you when you visit a site they've blacklisted. Beyond that, have them run anti-virus scans

Do you have Java installed? If you have Java installed and it still shows in Windows explorer as an archive, try this: https://johann.loefflmann.net/en/software/jarfix/index.html