*I've had a friend teach me about batch files, I'm good on that, but I still can't download the developer tool.

I have tried inserting the batch file into the command prompt, but I'm not sure if I'm doing it right.

I've tried running the developer installation wizard thing, and it won't work. It opens up for a flash and then it crashes with no error message. The batch file works, though. I've been working with a friend, and we found a way to open the game from the folder file without steam and the launcher, which works, but it lacks the updated mods that I want to play the game. I'm still looking to repair my Microsoft Framework, etc., because other games like Terraria, don't work as well due to somewhat similar issues.

I believe that the problem has to be between the launcher and the game, as third-party launchers have failed to work as well with the same problems. I'm able to start up the game by going through the file and directly starting the game up, but I need mods to play with friends. I can't figure out a way to use mods without a launcher and would like to get some more help. I hope that this helps to solve the issue. Thanks.

Please?

Should I attempt to contact Microsoft for any solutions?

And I do have "C:\Windows\Microsoft.NET\Framework\v4.0.30319\System.dll"
Should I delete it?

I have replaced the files correctly and have failed to run Arma III, also tried deleting the other system file, and then failed to run it again.

Also, I just attempted to run my Arma 3 in compatibility mode and an error came up. Here are the details:
Package ID: PCWDiagnostic
Path: C:\WINDOWS\Diagnostics\Index\PCWDiagnostic.xml
Error Code: 0x80070002
Source: Engine
User: DESKTOP-FB87KV4
Context: Restricted

Browsing through the files, my files are different from "System" and on. I have "System.Management.Automation". If that's the correct file, then I have the "v4.0_3.0.0.031bf3856ad364e35" file, then all I have in that file is an application extension called: "System.Management.Automation.dll". C:\Windows\Microsoft.NET\assembly\GAC_MSIL\System.Management.Automation\v4.0_3.0.0.031bf3856ad364e35
Maybe my version is different, as I have "v4.0_3.0.0.0...", and my system needs update?
Here's the "System.Management.Automation" file if you need it:

Okay here is the link: https://www.virustotal.com/en/file/d07b38d66c73ecda293c93643795a1f5d8b93d1e8685b243955cb0c31acddfb1/analysis/

Hello? It's still not working and I've tried it again and again.

I have run the commands several times as suggested by the link you sent me and then restarted my computer. It seemed to work, saying that it found and repaired systems and such. I then tried running Arma 3 and it didn't work. I then tried re-downloading Microsoft .NET Framework and using the repair tool, but to no effect.

Uninstalling and installing it again has not worked. The file doesn't even appear in the Microsoft Control Panel - Uninstall Programs. I've also tried repairing it which doesn't work.

I've tried that before and it always says that I have it already installed on this computer (version 4.6.2 or later). Should I just try to uninstall it?

I have tried verifying the game cache, I've uninstalled all anti virus programs, redownloaded, deleted all system files and redownloaded, restarted computer...