Windows 10: explorer.exe and sihost.exe crashes at startup (happens randomly)

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  1.    10 Dec 2015 #21

    jds63 said: View Post
    So basically at startup it is still happening File Explorer opens right up ? Not sure i understood it correctly your first paragraph.
    Unhook any external drives for now, Hard Drives, USB Flash or this tablet if hooked in anyway. Do not think it is a hradware problem, i think some software can be doing this or hooked device.
    Oops! I mean I booted my pc yesterday and there's no sihost.exe and explorer crashes or file explorer opens on its own. I hate typing on this phone. Hopefully I dont want to jinx myself when I'll boot my PC in about an half an hour. ><

    Anyway, I'll unhook my external hd and my tablet. Only mouse, wireless mouse receiver and keyboard should be hooked. Should I unhook the wireless mouse receiver too?
      My ComputerSystem Spec


  2. Posts : 3,033
    Windows 10 Pro 64 bit
       10 Dec 2015 #22

    RyougaLolakie said: View Post
    Oops! I mean I booted my pc yesterday and there's no sihost.exe and explorer crashes or file explorer opens on its own. I hate typing on this phone. Hopefully I dont want to jinx myself when I'll boot my PC in about an half an hour. ><

    Anyway, I'll unhook my external hd and my tablet. Only mouse, wireless mouse receiver and keyboard should be hooked. Should I unhook the wireless mouse receiver too?
    O.k. thanks. No can leave mouse and keyboard for now only. In past posts you also disabled 2 shell extensions maybe these were it. Again since did not happen in safe mode that it telling you it is some third party software,driver or shell extension causing this and most likely not hardware, but can be an external device to that is opening file explorer if have it plugged in at boot. Have to take a look at Auto Play in Control Panel to see how things are set.
      My ComputerSystem Spec


  3. Posts : 1
    Windows 10 Pro x64
       11 Dec 2015 #23

    For whatever it's worth: I saw exactly the same crashes on a clean install of Windows 10 Pro x64 here. I clean installed Version 1511 and it got directly updated to KB3116900. No other programs installed except Chrome, Dropbox and Office 365. No customizations yet.

    When the crash happens (doesn't happen on every boot), Windows boots up with an Explorer window already open and the Explorer icon flashing in the taskbar. Then the Explorer seems to crash and restart and the icon flashing stops. After that everything seem to be functioning normally. The faulting Explorer module is also "twinui.appcore.dll" (isn't that Modern UI App related?) and sihost.exe crashes as well.

    So whatever it is, it might not be related to your brownout, but to KB3116900. The update came 3 days ago so it might have been installed right before your crashes started. Oddly I don't see the same behavior on the two other machines I have. I think I'll sit back and wait. I have a feeling this might patch "itself" soon...

    EDIT: Maybe you can look if the update KB3116900 really got installed before the crashes started. It's Event ID 19 from source "WindowsUpdateClient".
    Last edited by Carst3n; 11 Dec 2015 at 07:22.
      My ComputerSystem Spec


  4. Posts : 3,033
    Windows 10 Pro 64 bit
       11 Dec 2015 #24

    twinui.appcore.dll is a common Windows file which is responsible for loading and processing the settings of related application or Windows function. This file has been around in Windows 0S way before Modern App you maybe referring to starting in Windows 8.

    KB3116900 https://support.microsoft.com/en-us/kb/3116900 What is listed from here.
    Cumulative update, has been few before this. Always cases were it happens to a choice few and not all who install a windows update, sometimes due to what is on those systems.

    If i have it correct an Event 19 is a successful update code.
      My ComputerSystem Spec

  5.    12 Dec 2015 #25

    jds63 said: View Post
    O.k. thanks. No can leave mouse and keyboard for now only. In past posts you also disabled 2 shell extensions maybe these were it. Again since did not happen in safe mode that it telling you it is some third party software,driver or shell extension causing this and most likely not hardware, but can be an external device to that is opening file explorer if have it plugged in at boot. Have to take a look at Auto Play in Control Panel to see how things are set.
    Yeah, definitely looks like it. I booted my PC not long after and the sihost.exe and explorer.exe crashes didn't happen again. I hope it kinda stays that way. I checked at Auto Play in the controll panel and everything is set to defaults except I switched PotPlayer to Windows Media Player for further troubleshooting.

    Carst3n said: View Post
    For whatever it's worth: I saw exactly the same crashes on a clean install of Windows 10 Pro x64 here. I clean installed Version 1511 and it got directly updated to KB3116900. No other programs installed except Chrome, Dropbox and Office 365. No customizations yet.

    When the crash happens (doesn't happen on every boot), Windows boots up with an Explorer window already open and the Explorer icon flashing in the taskbar. Then the Explorer seems to crash and restart and the icon flashing stops. After that everything seem to be functioning normally. The faulting Explorer module is also "twinui.appcore.dll" (isn't that Modern UI App related?) and sihost.exe crashes as well.

    So whatever it is, it might not be related to your brownout, but to KB3116900. The update came 3 days ago so it might have been installed right before your crashes started. Oddly I don't see the same behavior on the two other machines I have. I think I'll sit back and wait. I have a feeling this might patch "itself" soon...

    EDIT: Maybe you can look if the update KB3116900 really got installed before the crashes started. It's Event ID 19 from source "WindowsUpdateClient".
    I'm honestly glad you're having the same problem as mine. In fact, I did have KB3116900 update on my installed updates, but I don't see event ID 19 from source "WindowsUpdateClient" on my event viewer. If the explorer.exe and sihost.exe crashes again in the next boot, hopefully Microsoft will fix that in the next update. At least its not caused by a brownout at least.

    jds63 said: View Post
    twinui.appcore.dll is a common Windows file which is responsible for loading and processing the settings of related application or Windows function. This file has been around in Windows 0S way before Modern App you maybe referring to starting in Windows 8.

    KB3116900 https://support.microsoft.com/en-us/kb/3116900 What is listed from here.
    Cumulative update, has been few before this. Always cases were it happens to a choice few and not all who install a windows update, sometimes due to what is on those systems.

    If i have it correct an Event 19 is a successful update code.
    Thanks for the additional information, jds63. You're also a great help too. Also, thank you, Carst3n for shining in on this situation.
    I'll still keep an eye on those sihost.exe and explorer.exe crashes on the next boot.
      My ComputerSystem Spec


  6. Posts : 3,033
    Windows 10 Pro 64 bit
       12 Dec 2015 #26

    Your Welcome BTW. You know when you say crashes you never had a BSOD or Windows box come on the screen telling you of these crashes, believe you saw them in the Event Viewer.

    These paths that you listed are Microsoft, none are specifying another programs path as culprit

    Faulting application path: C:\WINDOWS\Explorer.EXE
    Faulting module path: C:\WINDOWS\System32\twinui.appcore.dll


    Faulting application path: C:\WINDOWS\system32\sihost.exe
    Faulting module path: C:\WINDOWS\SYSTEM32\ntdll.dll

    Not sure what Shell extension Classic Shell puts in your context menu or even Pot Player. Maybe the cause is these programs themselves.
    I would check through Event viewer on all past errors to see if ever comes across a different Faulting Application path or module then these.

    Using Pot Player is your choice if Windows Media Player or Movie & TV app are not playing or media or not to your liking. Similart idea with Classic Shell for those who do not like Start Menu although it has been improved since Win 10. Up to you, keep an eye on it and with also Event Viewer.

    CCleaner might be good enough for now for disabling shell extensions. Sometimes the result of a conflicting shell extensions causes explorer.exe to crash resulting in a solid color screen for a few seconds then back to normal desktop and a Pop up saying explorer.exe stopped responding.
    This was never your result even though one faulting path was explorer.exe, basically part of the same path as the other.
    In my thoughts as said before something on the system i believe is triggering file explorer to open like when you connect an external device and autoplay is set to open it in file explorer, maybe a startup item.
      My ComputerSystem Spec

  7.    03 Feb 2016 #27

    same exact thing here id error 1000 start up with explorer page open..looks like another OS glitch, mine opened with 'This PC' open showing all the drives etc. thought I left the pc on all night til l looked at the Event Viewer.
      My ComputerSystem Spec

  8.    18 Feb 2016 #28

    tazmo8448 said: View Post
    same exact thing here id error 1000 start up with explorer page open..looks like another OS glitch, mine opened with 'This PC' open showing all the drives etc. thought I left the pc on all night til l looked at the Event Viewer.
    I'm also glad I'm not the only one with this problem. Does the error 1000 shows the faulting module name of ntdll.dll on sihost.exe and twinui.appcore.dll on explorer.exe?

    And I thought that I was free from all that but right now it just happened. Same sihost.exe and explorer.exe crash with file explorer open at start up. This time though when it happened, I was using Classic Shell to use the start menu. So I'd disabled Classic Shell in the start-up menu. Right now, I haven't had the crash yet but I'll let you know what happens.
      My ComputerSystem Spec

  9.    18 Feb 2016 #29

    it just seems to come and go on its own....not too often though. i'm thinking it's just another glitch that will be addressed along with the others as time goes by.
      My ComputerSystem Spec

  10.    21 Feb 2016 #30

    tazmo8448 said: View Post
    it just seems to come and go on its own....not too often though. i'm thinking it's just another glitch that will be addressed along with the others as time goes by.
    I kinda hope so too and you know what, it happened again. This time I didnt use classic shell. Same error as always.
      My ComputerSystem Spec


 
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