Windows 10: How to delete CAT files.

Discus and support How to delete CAT files. in Windows 10 Support to solve the problem; [img] I booted into Linux Mint but failed to delete them. I booted into Windows PE but failed to delete them. I used PowerRun to run the following... Discussion in 'Windows 10 Support' started by Matthew Wai, Apr 14, 2020.

  1. MATTHEW WAI
    Matthew Wai Win User

    How to delete CAT files.


    How to delete CAT files. [​IMG]


    I booted into Linux Mint but failed to delete them.
    I booted into Windows PE but failed to delete them.
    I used PowerRun to run the following but failed to delete them.

    Code:
    How can I delete the CAT files?

    :)
     
    Matthew Wai, Apr 14, 2020
    #1
  2. FREEBOOTER
    FreeBooter Win User
    FreeBooter, May 25, 2020
    #2
  3. MATTHEW WAI
    Matthew Wai Win User
    How to delete CAT files.

    How to delete CAT files. [​IMG]


    I booted into Linux Mint but failed to delete them.
    I booted into Windows PE but failed to delete them.
    I used PowerRun to run the following but failed to delete them.

    Code:
    How can I delete the CAT files?
     
    Matthew Wai, May 25, 2020
    #3
  4. TOPGUNDCP
    topgundcp Win User

    How to delete CAT files.

    How can I clean these .MUM and .CAT files from failed updates?

    DISM /online /cleanup-image /startcomponentcleanup is used only clean up the component WinSXS folder and is advisable after every cummulative updates, It will clean up quite a bit of space.
    If you list all .mum & .cat files in deltail view, you'd see the date and also the KB in question. I have mine listed and most of them dated back in sept. 2017
    These files are owned by Trusted Installer and cannot be deleted even if you are the Administrator.
    Try:
    1. Take ownership of these files and delete them. If failed, go to step 2
    2. Download: PowerRun v1.3 (Run with highest privileges)
      then run. Click on the Command icon to run as Trusted Installer, cd to the folder then delete them.
    3. An easy way is to boot up Linux then delete them.

    If those KB's failed to update, you can safely delete them. Since I have a backup image, I booted into Linux and delete them all. Once back to Windows, Manually download the latest KB4093105 that update Windows to 16299.402 by passing all the updates in between.
    You can use this link from @EdTittel post #1 or use mine in post #2 of this link, whatever you feel comfortable:
    Download and Install Windows Update from Microsoft Update Catalog Windows 10 Tutorials

    FYI, Even in this folder, there are thousands of .mum, .cat files but they don't occupy much space. After delete all the .mum and .cat files in mine, Windows re-created 1,668 files just to install KB4093105 and occupy 22MB total.

    How to delete CAT files. [​IMG]
     
    topgundcp, May 25, 2020
    #4
Thema:

How to delete CAT files.

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