do you have the latest java version?
do you experience wifi lag?
do you have a lot of metal near you? (Metal blocks signal, like in an elevator)
do you live near a really big wifi consuming object?
is your router shitty?
do you have a lot of computers connected to your wifi?

are you getting the .minecrft.tmp file did not move to minecraftlauncher.exe message?

If you are getting that message launch the program again and get that window open that gives you that message. leave it on your screen and move it to the side. go to bottom left and click your window icon. find file explorer or my computer. using the message as a guide map find that file location. It goes something like this. open c drive, click program files, click minecraft, click temp file, click roaming and so on and so on until you reach the file they are talking about. once you find the file dont open it. Highlight the file namein your message its usually like minecraftinstaller.tmp just rename it to the name listed usually something like MinecraftInstaller.exe . The computer will usually ask if you really want torename it and you say yes. Then close all windows a including the message window. Next reopen minecraft and it should work. Sometimes you have to restart the computer once but then its fine. hope this helps. :)

Update your java if that doesn't work come back here, dont reboot there a easier fix im sure

have you also tried uninstalling minecraft and then download a fresh copy from mojang? make sure you have your mojang sign in and info before doing this in case you need your parents help or need to locate this info first. also here is a link to go read about a possible solution.

link text

also here is a youtube step by step to possible fix your issue

link text

Are you admin on your computer?

have you tried all the alternative download versions and the non-java version?i use the non-java on one computer and the java one on the other because of their needs

Are you having issues downloading? What are you using to download the installer? What is your OS? What is your browser?

If the file is downloading properly, but won't install. Have you tried re downloading the installer? Have you tried the legacy launcher?
https://minecraft.net/en-us/download/alternative

Posting what steps you take to get the bug, any error messages you get, and optionally screenshots will help us help you.

ok bro ill try to help standby

ok give me a short update what you have done so far.
usually i can just select uninstall programs in control panel then uninstall minecraft completely. i then restart computer. next i do a file search for minecraft. if i find any files i delete them, i restart again and repeat until they are all gone. don't forget to empty your recycle bin. also i run ccleaner to make sure all my temp files are deleted along with any cookies or malware. it is a free program i have used for years. once i have done all that i go to mojang and download a fresh copy of minecraft. fyi file extensions in your browser can interfere. sometimes you can just use internet explorer to get the download then go back to the regular browser you use.

before you do all this restart delete stuff if you dont have ccleaner get it and run it then restart your computer, try running minecraft and right down exactly what the fault message says. i think you are having old mnecraft files interfering with the restart. also check your download folder for multiple copy's you can delete. i hope this helps, ive been then when i updated to windows 10 and it took forever to get it right

here watch this

If i had to make a guess i would say you have multiple copies interfering or your browser is blocking a full download.

i would run ccleaner, then do a full uninstall of all minecraft, then download a fresh copy from mojang and go from there. it feels like you got multiple folder or download copies interfering. some are in temp folders, some in program folders some in recycle bin some in downloads, and when it tries to start it selects the wrong version and has a conflict.if i was there i could look, fro here i am just guessing based on whats has happened to me in the past. i was using firefox browser and it caused all kinds of issues. so i cleared everyting out, used internet explorer for download and finally got it to work

I feel your pain, its like all you want to do is play, you try everything and still nothing. everybody has advice your hope goes up and then more frustration. I will try to stay online as long as I can and try to walk you thru this step by step until we can get you playing again :)

which
browser did you use? chrome, explorer? firefox?

i use this link

https://piriform.zendesk.com/hc/en-us/articles/115000184428-Windows-10-Compatibility-Issues

god i hate that fucking edge. use internet explorer or google chrome, edge and contana love to decide what you need behind closed doors, screw that, download chrome browser or standard internet explorer and lets get you playing, man i hate that, i had to turn mine off....