General Enable or Disable Launch Folder Windows in a Separate Process in Windows 11


Open_folder_banner.png

This tutorial will show you how to enable or disable launch folder windows in a separate explorer process by default for your account in Windows 10 and Windows 11.

Each process running in Windows is assigned a unique decimal number called the process ID (PID) to identify an active process. This number is used to specify the process when for example attaching a debugger to it.

By default, all File Explorer windows, including the desktop shell, run in a single explorer.exe process. If one File Explorer window hangs or crashes, it will cause all File Explorer windows running in the same process to hang or crash until the process restarts.

You are able to use the Open in new process context menu to manually open folder windows (File Explorer) in a new process.

If you like, you can enable to launch folder windows in a separate process by default. This way each explorer.exe process will have its own process ID (PID) to improve stability of the explorer shell.

Separate explorer processes appear to no longer work for the new File Explorer with tabs.



Contents

  • Option One: Enable or Disable Launch Folder Windows in a Separate Process in Folder Options
  • Option Two: Enable or Disable Launch Folder Windows in a Separate Process using REG file


EXAMPLE: Same or separate explorer.exe process (PID) for folder windows (File Explorer) in Task Manager

Launch_fodler_windows_in_same_process.png

Launch_fodler_windows_in_separate_process.png





Option One

Enable or Disable Launch Folder Windows in a Separate Process in Folder Options


1 Open Folder Options.

2 Click/tap on the View tab. (see screenshot below)

3 Check (enable) or uncheck (disable - default) Launch folder windows in a separate process for what you want.

4 Click/tap on OK.

Launch_folder_windows_in_a_separate_process.png





Option Two

Enable or Disable Launch Folder Windows in a Separate Process using REG file


1 Do step 2 (enable) or step 3 (disable) below for what you would like to do.

2 Enable Launch Folder Windows in a Separate Process

A) Click/tap on the Download button below to download the file below, and go to step 4 below.​

Enable_Launch_folder_windows_in_a_separate_process.reg


(Contents of REG file for reference)
Code:
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"SeparateProcess"=dword:00000001

3 Disable Launch Folder Windows in a Separate Process

This is the default setting.


A) Click/tap on the Download button below to download the file below, and go to step 4 below.​

Disable_Launch_folder_windows_in_a_separate_process.reg


(Contents of REG file for reference)
Code:
Windows Registry Editor Version 5.00

[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"SeparateProcess"=dword:00000000

4 Save the .reg file to your desktop.

5 If you have Smart App Control turned on, you will need to unblock the downloaded REG file.

6 Double click/tap on the downloaded .reg file to merge it.

7 When prompted, click/tap on Run, Yes (UAC), Yes, and OK to approve the merge.

8 Either restart the explorer process, sign out and sign in, or restart the computer to apply.

9 You can now delete the downloaded .reg file if you like.


That's it,
Shawn Brink


 

Attachments

Last edited:
The article above shows explorer work as it should, and as it did in former windows versions. That however is not how it's working.

When I view explorer in Processes, every window is under one process.
When I view Details there are two processes that appear to be the desktop manager in one, and all the folder windows in another.

I have checked many times, the option is enabled. It's the first thing I do post-install.

When logged in as a standard user with admin rights. this remains the case however I launch a window (e.g. with cmd.exe).

If however I launch cmd.exe as Administrator and enter "explorer.exe" things work as they should. Given the risk that working as Administrator presents, that is not something I want to, or should, do.
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    PC/Desktop
    CPU
    Intel NUC
    Monitor(s) Displays
    LG TV
    Screen Resolution
    1360x768
    Hard Drives
    512MB SSD
Hello @leopardtail, and welcome. :alien:

I'm seeing the same thing with all explorer windows using the same process ID even with Launch folder windows in a separate process enabled.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro for Workstations
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom self build
    CPU
    Intel i7-8700K 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING (11GB GDDR5X)
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G75 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2,
    4TB Samsung 990 PRO M.2,
    TerraMaster F8 SSD Plus NAS
    PSU
    Seasonic Prime Titanium 850W
    Case
    Thermaltake Core P3 wall mounted
    Cooling
    Corsair Hydro H115i
    Keyboard
    Amazon Basics Wired Full Keyboard MD005
    Mouse
    Logitech MX Master 4
    Internet Speed
    2 Gbps Download and 100 Mbps Upload
    Browser
    Chrome and Edge
    Antivirus
    Microsoft Defender
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    CyberPower CP1500PFCLCD
    Galaxy S23 Plus phone
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Surface Laptop 7 Copilot+ PC
    CPU
    Snapdragon X Elite (12 core) 3.42 GHz
    Memory
    16 GB LPDDR5x-7467 MHz
    Monitor(s) Displays
    15" HDR
    Screen Resolution
    2496 x 1664
    Hard Drives
    1 TB SSD
    Internet Speed
    Wi-Fi 7 and Bluetooth 5.4
    Browser
    Chrome and Edge
    Antivirus
    Microsoft Defender
I you restore Classic File Explore in Windows 11 using the method provided here (option 3 in my case), the option "launch folder windows in a separate process" works, showing different PID for each window (I recommend restarting the computer for all modifications and options to take effect). As stated in the first post, this option does not seem to work for the new tabbed File Explorer.
 

My Computer

System One

  • OS
    Win 11 Pro 23H2
    Computer type
    PC/Desktop
    CPU
    13700K
    Motherboard
    MAG Z790 TOMAHAWK WIFI (7D91vHH - 0x12F)
    Memory
    32GB DDR5 Kingston Fury Renegade @6400
    Graphics Card(s)
    MSI GeForce RTX 4070 Ti Gaming X Slim White 12G
    Sound Card
    Creative Sound Blaster Z SE
    Monitor(s) Displays
    ASUS VA24DQ
    Hard Drives
    WD Black SN850X 2TB (main)
    SAMSUNG SSD 990 Pro 2TB
    WD Blue 1TB 7200rpm
    PSU
    Corsair RM1000x SHIFT
    Case
    DeepCool CH560 WH
    Cooling
    Noctua NH-D15S
    Keyboard
    Ducky One 3 Pro Nazca Line
    Mouse
    Logitech G403 HERO
If it's better to run explorer.exe in different processes, then why it comes disabled by default?
Any caveat or side effect if one runs it on certain scenarios?
TIA
 

My Computer

System One

  • OS
    Windows 10
run this (when using tabbed explorer):
Or you can just use this:
Code:
rem 1 - Launch folder windows in a separate process
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced" /v "SeparateProcess" /t REG_DWORD /d "1" /f

rem 0 - All of the components of Windows Explorer run a single process / 1 - All instances of Windows Explorer run in one process and the Desktop and Taskbar run in a separate process
reg add "HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer" /v "DesktopProcess" /t REG_DWORD /d "1" /f
 

My Computer

System One

  • OS
    Home26H2Can
    Computer type
    PC/Desktop
    CPU
    AMD Ryzen 5 8600G (07/24)
    Motherboard
    ASROCK B650M-HDV/M.2 (07/24) BIOS 4.21 AGESA ComboAM5 1.3.0.1 (04/26)
    Memory
    2x32GB Kingston FURY DDR5 5600 MHz CL36 @5200 CL36 (07/24)
    Graphics Card(s)
    ASROCK Radeon RX 6600 Challenger D 8G @48FPS (08/24)
    Sound Card
    Creative Sound BlasterX AE-5 Plus (05/24)
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    24" Philips 24M1N3200ZS/00 (05/24)
    Screen Resolution
    1920×1080@165Hz via DP1.4
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    Kingston KC3000 NVMe 2TB (05/24)
    ADATA XPG GAMMIX S11 Pro 512GB (07/19)
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    Seasonic Core GM 550 Gold (04/24)
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    Fractal Design Define 7 Mini with 3x Noctua NF-P14s/12@555rpm (04/24)
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    Noctua NH-U12S with Noctua NF-P12 (04/24)
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    HP Pavilion Wired Keyboard 300 (07/24) + Rabalux 76017 Parker (01/24)
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    Logitech M330 Silent Plus (01/26)
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    Edge, Brave for YouTube, LibreWolf for FB
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    Notifier: Xiaomi Mi Band 9 Milanese (10/24)
    FlexCore USB-C 3.2 Gen 1 (M) to LAN (F) (08/25)
If it's better to run explorer.exe in different processes, then why it comes disabled by default?
Any caveat or side effect if one runs it on certain scenarios?
TIA

Hello, :alien:

Running exlorer.exe in separate processes is just for better stability. This way if one explorer.exe process should hang or crash, it won't affect the other processes.
 

My Computers

System One System Two

  • OS
    Windows 11 Pro for Workstations
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom self build
    CPU
    Intel i7-8700K 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING (11GB GDDR5X)
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G75 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2,
    4TB Samsung 990 PRO M.2,
    TerraMaster F8 SSD Plus NAS
    PSU
    Seasonic Prime Titanium 850W
    Case
    Thermaltake Core P3 wall mounted
    Cooling
    Corsair Hydro H115i
    Keyboard
    Amazon Basics Wired Full Keyboard MD005
    Mouse
    Logitech MX Master 4
    Internet Speed
    2 Gbps Download and 100 Mbps Upload
    Browser
    Chrome and Edge
    Antivirus
    Microsoft Defender
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    CyberPower CP1500PFCLCD
    Galaxy S23 Plus phone
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Surface Laptop 7 Copilot+ PC
    CPU
    Snapdragon X Elite (12 core) 3.42 GHz
    Memory
    16 GB LPDDR5x-7467 MHz
    Monitor(s) Displays
    15" HDR
    Screen Resolution
    2496 x 1664
    Hard Drives
    1 TB SSD
    Internet Speed
    Wi-Fi 7 and Bluetooth 5.4
    Browser
    Chrome and Edge
    Antivirus
    Microsoft Defender
Running exlorer.exe in separate processes is just for better stability.
Yes. That's what I meant. Having better stability is a good thing. Then I wonder why is not the default configuration.
This way if one explorer.exe process should hang or crash, it won't affect the other processes.
Yes. I understand this.
 

My Computer

System One

  • OS
    Windows 10
Yes. That's what I meant. Having better stability is a good thing. Then I wonder why is not the default configuration.

Yes. I understand this.

One reason is that it doesn't appear to work anymore with the new File Explorer with tabs. :(
 

My Computers

System One System Two

  • OS
    Windows 11 Pro for Workstations
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom self build
    CPU
    Intel i7-8700K 5 GHz
    Motherboard
    ASUS ROG Maximus XI Formula Z390
    Memory
    64 GB (4x16GB) G.SKILL TridentZ RGB DDR4 3600 MHz (F4-3600C18D-32GTZR)
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING (11GB GDDR5X)
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G75 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 990 PRO M.2,
    4TB Samsung 990 PRO M.2,
    TerraMaster F8 SSD Plus NAS
    PSU
    Seasonic Prime Titanium 850W
    Case
    Thermaltake Core P3 wall mounted
    Cooling
    Corsair Hydro H115i
    Keyboard
    Amazon Basics Wired Full Keyboard MD005
    Mouse
    Logitech MX Master 4
    Internet Speed
    2 Gbps Download and 100 Mbps Upload
    Browser
    Chrome and Edge
    Antivirus
    Microsoft Defender
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    CyberPower CP1500PFCLCD
    Galaxy S23 Plus phone
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Surface Laptop 7 Copilot+ PC
    CPU
    Snapdragon X Elite (12 core) 3.42 GHz
    Memory
    16 GB LPDDR5x-7467 MHz
    Monitor(s) Displays
    15" HDR
    Screen Resolution
    2496 x 1664
    Hard Drives
    1 TB SSD
    Internet Speed
    Wi-Fi 7 and Bluetooth 5.4
    Browser
    Chrome and Edge
    Antivirus
    Microsoft Defender

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