So this computer is jammed up with administrative micro-management, and I can't use WinRAR to do the zip stuff. I am installing optifine by renaming minecraft.jar to minecraft.zip and using the file explorer to change the contents, but that's where the problems start. I can't drag the contents of the optifine.zip to the minecraft.zip, but when I try to extract the minecraft.zip I only get 534 files of the original 1000 something. When I extract the optifine.zip it extracts them all, but when I put them in the minecraft.zip it doesn't give me the option to "copy and replace all", instead it asks me if I would like to replace for 10 files, then a blank window pops up saying "compressing files" and that's it.
It's driving me insane, and I can't find any problems like it by search. Any help is appreciated, thanks!
Go to start
Type in CMD
In CMD type the following as I do:
When you've done that, find your admin account (not the one you're on now, as that isn't admin)
Then, type this in, including the star (I will use Admin as an example, you just type in the admins name, like Jake, Harold, or whatever):
net user Admin *
Then it will prompt you to change the password.
Type in 1234
Then type it again
Note, it will look like you aren't typing anything, but really it's just hiding the characters so be careful.
Then when you're done, restart the computer, login as admin with the new password, and then change the guest status to admin status for the account you're currently using.
A .jar file is, quite literally, a zip file, in the same way that a .docx file is a zip file. They are simply renamed. Of course they have extra information and metadata in the form of files within that zip file, but from the perspective of a Archive program, it's a zip file and that extra stuff isn't important.