Personalization Change Number of Taskbar Thumbnails to Show before Stacked as List in Windows 11


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takbar_settings_banner.png

The taskbar is a horizontal bar at the bottom of your desktop in Windows 11 that shows the Start menu, Search, Task View, Widgets, Chat, File Explorer, Microsoft Edge, and Microsoft Store icons aligned to the center by default. The taskbar corner includes the notification area icons, Quick Settings (Win+A), and Notification Center (Win+N) with the clock and calendar.

When you have one or more windows open for an app, you can hover over or click/tap on the app's icon on the taskbar to see thumbnail previews of the open windows.

The taskbar will only show thumbnail previews of so many open windows for an app before the threshold is reached and will then afterwards automatically show a stacked list of the open windows.

The taskbar thumbnail threshold limit will vary depending on what you have set for your screen resolution and DPI scaling level.

Here are some default taskbar thumbnail threshold limits based on screen resolution with default DPI:
  • 800x600 = 8 open windows
  • 1024x768 = 10 open windows
  • 1920x1080 = 16 open windows
This tutorial will show you how to change the taskbar thumbnail threshold limit for number of thumbnail previews to show before stacked as list for your account in Windows 10 and Windows 11.


EXAMPLE: Taskbar showing thumbnail previews or stacked list of open windows for app

Taskbar_thumbnail_previews.jpg
Taskbar_list.jpg




Here's How:

1 Open Registry Editor (regedit.exe).

2 Navigate to the key below in the left pane of Registry Editor. (see screenshot below)

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Taskband

NumThumbnails-1.png

3 Do step 4 (change) or step 5 (default) below for what you would like to do.

4 Change Taskbar Thumbnail Threshold

A) In the right pane of the Taskband key, double click/tap on the NumThumbnails DWORD to modify it. (see screenshot below step 2)​

If you don't have a NumThumbnails DWORD, then right click or press and hold on an empty area in the right pane of the Taskband key, click/tap on New and DWORD (32-bit) Value, type NumThumbnails, and press Enter.


B) Select (dot) Decimal, type a number you want for the taskbar thumbnail threshold, click/tap on OK, and go to step 6 below. (see screenshot below)​

If you type 0 (zero) it will be the same as 1 to show in list mode after you open two instances.


NumThumbnails-2.png

5 Restore Default Taskbar Thumbnail Threshold

A) In the right pane of the Taskband key, right click or press and hold on the NumThumbnails DWORD, and click/tap on Delete. (see screenshot below step 2)​

B) Click/tap on Yes to confirm, and go to step 6 below. (see screenshot below)​

NumThumbnails-3.png

6 Close Registry Editor.

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


That's it,
Shawn Brink


 

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Bug locker

Active member
Local time
6:21 PM
Posts
104
Location
Athens
OS
Windows 11 Pro
Hi.
When i hover the mouse over my browsers thumbnails (Edge & Vivaldi) i see only one preview , while they have open many tabs.
At Outlook , explorer and other apps i see all previews. I have NumThumbnails value with 16 data , and 1920x1080 res.
Is that normal ? If not , how i can fix it ?
Thanks. :)
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    HP Pavilion 17 cd2205nw
    CPU
    Intel 113700H
    Memory
    16GB
    Graphics Card(s)
    NVIDIA RTX 3050 ti
    Screen Resolution
    1980x1020
    Hard Drives
    Micron 512GB
    Mouse
    Logitech
    Internet Speed
    100Mbs
    Browser
    Vivaldi , Edge
    Antivirus
    Norton 360

Brink

Administrator
Staff member
MVP
Thread Starter
Local time
10:21 AM
Posts
5,571
OS
Windows 11 Pro for Workstations
Hi.
When i hover the mouse over my browsers thumbnails (Edge & Vivaldi) i see only one preview , while they have open many tabs.
At Outlook , explorer and other apps i see all previews. I have NumThumbnails value with 16 data , and 1920x1080 res.
Is that normal ? If not , how i can fix it ?
Thanks. :)

Hello mate, :-)

That's normal for a browser. You'll only see a thumbnail preview of the currently open tab in each separate browser window.
 

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
    16 GB (8GBx2) G.SKILL TridentZ DDR4 3200 MHz
    Graphics Card(s)
    ASUS ROG-STRIX-GTX1080TI-O11G-GAMING
    Sound Card
    Integrated Digital Audio (S/PDIF)
    Monitor(s) Displays
    2 x Samsung Odyssey G75 27"
    Screen Resolution
    2560x1440
    Hard Drives
    1TB Samsung 980 PRO M.2,
    1TB Samsung 970 EVO Plus M.2,
    6TB WD Black WD6001FZWX
    8TB WD MyCloudEX2Ultra NAS
    PSU
    Seasonic Prime Titanium 850W
    Case
    Thermaltake Core P3 wall mounted
    Cooling
    Corsair Hydro H115i
    Keyboard
    Logitech wireless K800
    Mouse
    Logitech MX Master 3
    Internet Speed
    1 Gbps Download and 35 Mbps Upload
    Browser
    Google Chrome
    Antivirus
    Microsoft Defender and Malwarebytes Premium
    Other Info
    Logitech Z625 speaker system,
    Logitech BRIO 4K Pro webcam,
    HP Color LaserJet Pro MFP M477fdn,
    Linksys EA9500 router,
    Motorola MB8611 cable modem,
    APC SMART-UPS RT 1000 XL - SURT1000XLI,
    Galaxy S20 Ultra 5G phone
  • Operating System
    Windows 11 Pro for Workstations
    Computer type
    Laptop
    Manufacturer/Model
    HP Spectre x360 2in1
    CPU
    i7-1065G7 3.9 GHz
    Memory
    16 GB LPDDR4-3200
    Graphics card(s)
    Intel Iris Plus
    Sound Card
    Intel SST
    Monitor(s) Displays
    13.3" 4K UWVA AMOLED multitouch
    Screen Resolution
    3840 x 2160
    Hard Drives
    512 GB PCIe NVMe M.2 SSD
    Browser
    Google Chrome
    Antivirus
    Windows Defender and Malwarebytes Premium

Bug locker

Active member
Local time
6:21 PM
Posts
104
Location
Athens
OS
Windows 11 Pro
Hello mate, :)

That's normal for a browser. You'll only see a thumbnail preview of the currently open tab in each separate browser window.
Thanks ! :) (y)
 

My Computer

System One

  • OS
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    HP Pavilion 17 cd2205nw
    CPU
    Intel 113700H
    Memory
    16GB
    Graphics Card(s)
    NVIDIA RTX 3050 ti
    Screen Resolution
    1980x1020
    Hard Drives
    Micron 512GB
    Mouse
    Logitech
    Internet Speed
    100Mbs
    Browser
    Vivaldi , Edge
    Antivirus
    Norton 360
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