New .tmp file each day that cannot be removed following recent update

  1.    28 Sep 2016 #1

    New .tmp file each day that cannot be removed following recent update

    I find successively each day a new .tmp file (now totalling five) in my Local>Temp folder that I am unable to remove. They started to appear following the major Windows update last week. Examples are wct2E7F.tmp, wct4C5E.tmp, etc. All have the same date and time of 26/08/2016 19:48 even though they occur daily. I obtain a "File Access Denied" window and message if I try to delete any of them.
      My ComputerSystem Spec

  2. Bree's Avatar
    Posts : 9,904
    10 Home x64 (1809) (10 Pro on 2nd pc)
       28 Sep 2016 #2

    No, no problem clearing my %temp% (and no wct----.tmp files either)

    Click image for larger version. 

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    This thread suggests the problem was around in Win7 as well as Win10 and may well involve the Norton Web Curator Tool.
      My ComputersSystem Spec

  3.    28 Sep 2016 #3

    I thank you for your reply.
    I do not use Norton, certainly. I wonder if you or anyone can advise me on how to obtain permission to delete such temporary files?
      My ComputerSystem Spec

  4.    28 Sep 2016 #4

    Temp files are often "locked" because the application that opened them still has them open. You would typically need to reboot to clear them if the app is long running (say a service, or something running in the background).

    If you've already rebooted, then it may be a permissions issue and use Disk Cleanup to remove them.
      My ComputerSystem Spec

  5. Bree's Avatar
    Posts : 9,904
    10 Home x64 (1809) (10 Pro on 2nd pc)
       28 Sep 2016 #5

    Of A well-behaved app that uses the %temp% folder should clean up after itself or, at least, let Disk Clean-Up do it for you. So that's the first to thing to try.

    The next step up is to take ownership of the file(s), grant yourself full control (if necessary) and try to delete them. Try again in Safe Mode if that fails. If you still can't because the files are in use, boot to a Command Prompt and try there.

    The nuclear option is to boot from a Linux Live USB and delete them from outside windows.

    Of course, that still doesn't answer the question of where they come from in the first place.
      My ComputersSystem Spec

  6.    29 Sep 2016 #6

    Bree (I apologise for misspelling your username in my previous reply)
    I thank you both for your constructive responses. I rebooted my PC and those particular .tmp files no longer appear. It is interesting to note: I have 'Shut down' my PC following each session since I first started to use Windows twenty years ago. Only recently have I observed perceived wisdom and chosen 'Sleep' mode instead. It seems to indicate neither option is necessarily better than the other for different reasons. I agree about the files themselves: we continue not to know what created them in the first instance.
      My ComputerSystem Spec


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