Windows 10: CreateExpBtn, err:A call to an OS function failed.

Discus and support CreateExpBtn, err:A call to an OS function failed. in Windows 10 BSOD Crashes and Debugging to solve the problem; Hi I've encountered this error twice already and every time I try to open file explorer there is a long delay about 10–20 seconds to open, this... Discussion in 'Windows 10 BSOD Crashes and Debugging' started by James JacksonBY, Jun 16, 2025 at 8:07 AM.

  1. JAMES JACKSONBY
    James JacksonBY Win User

    CreateExpBtn, err:A call to an OS function failed.


    Hi I've encountered this error twice already and every time I try to open file explorer there is a long delay about 10–20 seconds to open, this includes launching from taskbar, this pc and even trying to open recycle bin. But the error message doesn't appear that oftenEdition Windows 10 Pro Version 2009 Installed on ‎1/‎8/‎2025 OS Build 19045.5965 chrome would freeze when trying to upload a file, so I uploaded them herehttps://ibb.co/WNxjx73Shttps://ibb.co/Ps830HPG

    :)
     
    James JacksonBY, Jun 16, 2025 at 8:07 AM
    #1
  2. RAJ-O
    Raj-O Win User

    hcsshim:CreateExpBtn, err:A call to an OS function failed. :prepareLayer - failed failed in Win32: Incorrect function. (0x1)

    Docker build is failing on Windows 10.

    OS Name: Microsoft Windows 10 Pro

    OS Version: 10.0.18362 N/A Build 18362

    docker build .

    Sending build context to Docker daemon 3.248GB

    Step 1/16 : FROM mcr.microsoft.com/windows/servercore:ltsc2019

    ---> fdf6432edbdc

    Step 2/16 : LABEL maintainer *** Email address is removed for privacy ***

    ---> Running in f8b0c59188bf

    hcsshim:CreateExpBtn, err:A call to an OS function failed. :prepareLayer - failed failed in Win32: Incorrect function. (0x1)

    In many forum, it says it could be due to vmcompute.dll or
    C:\Windows\System32\drivers\cbfs4.sys

    I don't have cbfs4.sys in my system. Any suggestion?
     
    Raj-O, Jun 16, 2025 at 8:13 AM
    #2
  3. MICHAEL.TOMLINSON4
    Michael.Tomlinson4 Win User
    hcsshim:CreateExpBtn, err:A call to an OS function failed. :prepareLayer - failed failed in Win32: Incorrect function. (0x1)

    Same problem, I also don't have those DLLs.
     
    Michael.Tomlinson4, Jun 16, 2025 at 8:13 AM
    #3
  4. 颖陈C
    颖陈C Win User

    CreateExpBtn, err:A call to an OS function failed.

    ERR CORE OXC1900107

    ERR CORE OXC1900107 WIN10 UPDATE FAILED
     
    颖陈C, Jun 16, 2025 at 8:13 AM
    #4
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CreateExpBtn, err:A call to an OS function failed.

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