Windows 8 and 8.1 Forums


Oh my..What is the appdata folder for?

  1. #1


    Posts : 11
    Windows 8.1

    Oh my..What is the appdata folder for?


    Bear with me as this is something I have never experienced being around computers for about 17 years. I am not a professional just a casual user who has learned a thing or two along the way.

    I have a 2TB HDD (1.79TB). Last night or so I just happened to be in Windows Explorer and I noticed the amount of space it said I used and immediately I knew something had to be wrong....it was claiming I was using more than 800GB of space when in reality I am not even using 200GBwith anything I have installed or downloaded with the computer. With some basic research into the drive I noticed it said my users folder....then MY name in particular...was using 780GB of space. Now a little more info before I proceed on that...

    About a week ago and more I started having trouble with Tuneup Utilities 2014 as it would crash when I tried to update it and then I could no longer even open the program. There would be times when I would come back to my PC after a long period of time several hours or so....and there would LITERALLY be HUNDREDS of boxes open on my screen saying error with tuneup utilities. I still thought nothing of it again and simply planned to uninstall it and mess with it later. Now...while I am trying to figure out why my PC Is showing me as using so much space when I am not I obviously think there is some hidden folders so I right click and highlight the hidden box...this option once applied actually seemed to do the opposite of what it used to do for me years back whenever I would be using it for whatever reason...instead of showing hidden files it actually hid ALL OF MY FILES and made it look like I never used the PC before. I freaked out for a second and simply clicked the box to undo it which scared the heck out of me. But while it was unhiding and hiding the files I noticed it blazing through file names so quickly that you can't read any of them. Yet both times I noticed it seemed to be just BLAZING through Tuneup Utility files that looked awfully familiar to the error I had been getting so many times. Immediately I make a connection.

    So finally when I go into the Appdata folder. To my untrained eye...it appears this folder exists to somehow log anytime a program messes up? I clicked a folder called "roaming" which I also have a question for....why is there a roaming folder? I am using a desktop and it never moves....either way in this roaming folder was a tuneup utility folder with 800gb of crash files!!!! For WEEKS...every minute my PC was running...tuneup utilities would make 3 files...1 file 1KB... 1 file 111KB...1 file 96MB. YES, 3 files per minute...EVERY MINUTE the pc is running.

    TL DR. Is there a reason to to believe I have a virus? Why is there a roaming folder for SOME programs inside of appdata yet other programs folders are shown in two other folders called Local and Local Low?

    What is the purpose of the appdata folder and whats the benefit of using it? Assuming I could turn it off that is.

    Can I safely delete the files in there taking up ridiculous amounts of space and more importantly somehow change it so it would no longer make a save and document every time i crashed? Back before I uninstalled tuneup...I was getting sometimes 5 error messages in 10 seconds....turns out every SINGLE time it did that it created some kind of log about it and a HUGE One at that. How do you turn that off? There has to be a way to turn it off as I dont see any benefit as to saving to my HD a strange file each time something crashes.

    I have never had anything like this ever happen in my life...and I have dealt with some pretty weird PC issues I was able to fix going blind.

      My System SpecsSystem Spec

  2. #2


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    If you mess around with junk like Tune-up utilities, you should expect trouble. Delete all those files in Roaming. And next time you want to know exactly what's on your C partition, use this program: WinDirStat - Windows Directory Statistics
      My System SpecsSystem Spec

  3. #3


    Posts : 11
    Windows 8.1


    WHy dont you like Tuneup?
      My System SpecsSystem Spec

  4. #4


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    Quote Originally Posted by PHub88 View Post
    WHy dont you like Tuneup?
    Because it can ruin any good system.
      My System SpecsSystem Spec

  5. #5


    Posts : 308
    64-bit Windows 8


    Believe me, the AppData folder is very necessary! It's where Windows keeps all its records of what goes on in your computer. If you were going to delete that folder, you'd have no computer left, because the System couldn't run. For example:
    "AppData\Roaming\Microsoft\Internet Explorer\Quick Launch"
    ....................is your Quick Launch toolbar.
    "AppData\Roaming\Microsoft\Internet Explorer\Quick Launch\User Pinned\TaskBar"
    ....................is your pinned Taskbar icons.
    "AppData\Roaming\Microsoft\Windows\Start Menu\Programs"
    ....................is the links to all your Desktop apps and their data.
    "AppData\Local\Microsoft\Windows\Application Shortcuts"
    ....................is your Metro apps and their data.
    "AppData\Local\Microsoft\Windows\appsFolder.itemdata-ms"
    ....................is your Start Screen.
    AppData is a "System Folder" maintained by Windows for its own use. Don't ever alter or delete the contents of anything in it. And the same goes for everything that's outside your user folder, such as C:\ProgramData, C:\ProgramFiles, and C:\Windows.
      My System SpecsSystem Spec

  6. #6


    Posts : 11
    Windows 8.1


    i have to at least be able to delete the 800 freaking gigs it put in for a program I no longer have right?

    http://oi42.tinypic.com/66xheg.jpg

    It literally was creating 3 files per minute of 97 MB every single minute my PC was running. Its gotta be safe to delete those? Also....theres no way to prevent programs from recording crashes as files?
      My System SpecsSystem Spec

  7. #7


    Posts : 1,875
    Windows 10 Pro Prieview x64


    I would delete them and uninstall tuneup.
      My System SpecsSystem Spec

  8. #8


    Germany/Florida
    Posts : 4,514
    Vista and Win7


    Quote Originally Posted by adamf View Post
    I would delete them and uninstall tuneup.
    Absolutely.
      My System SpecsSystem Spec

  9. #9


    Posts : 308
    64-bit Windows 8


    Uninstall that software FIRST. Then, if any files that it created for its own purposes are still there afterwards, I guess you could safely delete those. But only if you're SURE that the files you're deleting have to do ONLY with the tuneup utility and not with anything ELSE. Don't just see a lot of files and ASSUME that they shouldn't be there just because you don't know what they are. Back when I first installed Windows, I looked through all of its system folders and I immediately noticed that the AppData folder was very large. Don't worry about it. A Windows system is enormously complex. Mine contains over 140,000 files, including about 3,000 in the Appdata folder. And I have no errors, crashes, or problems of any kind.

    In any event, don't get any ideas about deleting the whole AppData folder, or the whole Roaming folder, because they also contain other things that are needed by other apps and by the Windows system itself. A folder doesn't do anything; it just sits there. Programs may cause crashes, but folders don't. That tuneup utility may be a problem, but the AppData folder is not a problem. It's supposed to be there. It's part of the Windows system, and it's always been there. Every Windows user has an AppData folder. There are many programs running on your computer all the time, and they all use the AppData folder to store everything they need to store. That's why it's so big.
      My System SpecsSystem Spec

  10. #10


    Posts : 11
    Windows 8.1


    Yeah I got rid of Tuneup and all those files...I still can't believe an error like that exists. Easily the weirdest thing I have encountered in the history of me being around computers.

    Tuneup creating 3 files per minute...every SINGLE minute that my PC was running for approx 3 weeks. 24,000 files taking up 800 gigabytes. Just...wow...
      My System SpecsSystem Spec

Page 1 of 2 12 LastLast
Oh my..What is the appdata folder for?
Related Threads
Hi everybody. I updated my OS to windows 8.1. I noticed that I wasn't able to use any windows app as a cross is appearing on every app. I was searching for solutions on the internet. I found some solution posted on a website which I followed but it actually made the condition worse. I somehow...
I have installed an application on the following path : "C:\Users\Ron Wolpa\AppData\Roaming\uTorrent\uTorrent.exe" (this is the path I got by right clicking the application icon and selecting properties). However I canīt find this location and Windows explorer only gives the following path...
Hello, On my PC, I made a new user account for the rest of my family to use (I don't want to use a Guest account). The account type is just Standard. I recently noticed that my brother is lurking through my Application Data folder on my account using the standard user account I made for them. ...
my Libraries folder is missing from AppData. i'm showing hidden files. this post says it should be found in /Users/<your username>/AppData/Roaming/Microsoft/Windows/ Unable to create the file "New Library.library.ms - Windows 7 Help Forums How to restore my libraries folder? This happens...
Solved Move appdata folder all users in User Accounts and Family Safety
I have moved all of the user file from the c: on to any hard drive can move appdata folder as well also is there way new users file are automatically on the other drive
AppData Folder in General Support
How do I access app data folder in 8.1. I cant find it. I need to manually remove some folders hiding in there containing, amongst other things, snap do bug.???? I used to check it regularly in 7, but cant find it in 8 and now 8.1.:sarc: Spy Hunter 4 is finding these things but says deleted then...
Solved Set permissions to \<user>\AppData\Local\Temp folder in User Accounts and Family Safety
Hi all. I have this problem: every time the Windows 8 starts it seems that i loose the permissions to the temp folder. As a result some applications using that folder to launch (for example Google drive) fail giving me an error. Another example are some installation files not starting because the...
Eight Forums Android App Eight Forums IOS App Follow us on Facebook