Why are there weird folders appearing on my PC?
Question by steven /

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.

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Answers (14)
  • steven

    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

  • Anonymous

    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 

  • sudhakar

    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 . 

  • Souleater

    so this means they are useless ?

    • Mike

      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.

  • Anonymous

    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

  • Souleater

    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 ;)

  • Bruce Epper

    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.

  • FrederickSzczepanski

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

  • Joseph Harry Ariola

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

  • FrederickSzczepanski

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

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