Why are there weird folders appearing on my PC?

steven November 2, 2011

I have weird folders that just appeared out of no where with names like 515f03d5c18f1136b1e4. When I try to access to see what the are or delete them it says I don’t have permission even when I run as an admin.

  1. steven
    January 9, 2012 at 1:50 am

    sorry been awhile they are located in the C: drive and i have 70 of these files and they never disappeare with reboot or completion of updates

  2. Anonymous
    November 3, 2011 at 10:02 am

    if you want to delete them then try with unlocker

    if you have microsoft security then perhaps is mpasdlta.vdm: most recent delta signature set of AntiSpyware definitions.

    if you find these folders anywhere underneath your Windows directory, leave them alone 

  3. sudhakar
    November 3, 2011 at 7:56 am

    These folders are mostly created by windows itself .........for installing updates.These folders are either created in c or any other drive depending required space . 

  4. Souleater
    November 3, 2011 at 6:35 am

    so this means they are useless ?

    • Mike
      November 3, 2011 at 7:00 am

      If they really are from Windows they should disappear "all by themselves" once your system is fully updates.

      You could delete them manually but this may disrupt update installations and they will most likely reappear sometime soon.

  5. Anonymous
    November 3, 2011 at 6:19 am

    These folders are temp files from windows and dot. Net installation.

    Most of the time they are virus free.

    If you can't delete them, use unlocker software. It will surely get rid of these folders

  6. Souleater
    November 3, 2011 at 5:31 am

    im using windows 7, these folders appear on several of my many hd's, no security prog or check ever found something alarming, so i think we solved this mystery ;)

  7. FrederickSzczepanski
    November 3, 2011 at 4:54 am

    Especially if they aren't taking up much space... (in response to Joseph Harry Ariola's post)

  8. Bruce Epper
    November 3, 2011 at 4:54 am

    Some security updates that are applied using Windows Update will sometimes leave these folders and files behind (generally in the root of the C: drive).  They are only used to install the updates and can be safely deleted after the system has been rebooted.

  9. Joseph Harry Ariola
    November 3, 2011 at 4:52 am

    a good general rule is to not delete anything you didn't add. You can however delete those preceded by a dollar sign: ($)

  10. FrederickSzczepanski
    November 3, 2011 at 4:49 am

    I would run Malwarebytes just in case... especially if the randomly-named folders are within Temp, Local, AppData, or other folders in that path. 

  11. Souleater
    November 3, 2011 at 4:39 am

    you have adjusted to see system files, havent you ? in deed windows seems to create folders like that, i have them, too, at least some of them seem to have system-related content, so i decided not to try to delete

  12. Andrew
    November 3, 2011 at 4:37 am

    The poster above is along the right lines - in Windows XP, certain security updates are installed in the main directory as seemingly gobblydook. Unfortunately, there's nothing you can (or really should) do about them, seeing as they keep your computer safe.

  13. Jeff Fabish
    November 3, 2011 at 2:19 am

    Hmm, the name was randomly generated so perhaps it was a Windows update (that's how they name their temp folders). Restart and see if they are still there. If they are, what location are they stored in? 

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