.jpg & .mp4 files - Default associated program - some will show thumbnail images, some will not - Windows 11


@bobcollard & @Dru2 & @johnlgalt

First of all, thanks to all of you for your attempt to help but believe it or not, it was not even related to photo images, mp4 videos as I managed to fix it by accident and I noticed it did it to .bat files as well so basically the preview function for thumbnails was broken. But anyways, this was how I fixed it by accident.

A few months ago when I was on Windows 10 21H1, I changed my display scaling to 225%, I updated to Windows 11 22000.051 via Windows Update on July 3, 2021 and all the previews of photo jpg, mp4 videos and .bat files were working but as mentioned, some after a certain size work and some did not which was after I updated to Windows 11 22000.065 on July 9, 2021 using the UUDump.net ISO method as the Windows Update and the cab files method failed as I had posted on KB5004745 Windows 11 Insider Preview Dev Build 10.0.22000.65 - July 8

Since Windows 11 no longer had the up/down arrows for opened apps, not to be confused with the system tray as I am talking about the left half of the taskbar, I was curious what it looked like if I changed the display scaling to 250% which is what is recommended so I did, nothing happened other than I ran out of desktop space so I rebooted and everything works correctly now for image previews of all jpg's, mp4's and even the .bat files which I never realized had thumbnail previews. So after that, I changed the display scaling back to 225% and it's working fine ever since both before and after rebooting.

2021-07-13_14-14-15.jpg
 

My Computer

System One

  • OS
    Windows XP/7/8/8.1/10/11, Linux, Android, FreeBSD Unix
    Computer type
    Laptop
    Manufacturer/Model
    Dell XPS 15 9570
    CPU
    Intel® Core™ i7-8750H 8th Gen Processor 2.2Ghz up to 4.1Ghz
    Motherboard
    Dell XPS 15 9570
    Memory
    32GB using 2x16GB modules
    Graphics Card(s)
    Intel UHD 630 & NVIDIA GeForce GTX 1050 Ti with 4GB DDR5
    Sound Card
    Realtek ALC3266-CG
    Monitor(s) Displays
    15.6" 4K Touch UltraHD 3840x2160 made by Sharp
    Screen Resolution
    3840x2160
    Hard Drives
    Toshiba KXG60ZNV1T02 NVMe 1024GB/1TB SSD
    PSU
    Dell XPS 15 9570
    Case
    Dell XPS 15 9570
    Cooling
    Stock
    Keyboard
    Stock
    Mouse
    SwitftPoint ProPoint
    Internet Speed
    Comcast/XFinity 1.44Gbps/42.5Mbps
    Browser
    Microsoft EDGE (Chromium based) & Google Chrome
    Antivirus
    Windows Defender that came with Windows
@bobcollard & @Dru2 & @johnlgalt

First of all, thanks to all of you for your attempt to help but believe it or not, it was not even related to photo images, mp4 videos as I managed to fix it by accident and I noticed it did it to .bat files as well so basically the preview function for thumbnails was broken. But anyways, this was how I fixed it by accident.

Thank you. Glad you solved it :)
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 23H2 (Build 22631.3296)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom built
    CPU
    Intel i9-9900K
    Motherboard
    Gigabyte Aorus Z390 Xtreme
    Memory
    32G (4x8) DDR4 Corsair RGB Dominator Platinum (3600Mhz)
    Graphics Card(s)
    Radeon VII
    Sound Card
    Onboard (ESS Sabre HiFi using Realtek drivers)
    Monitor(s) Displays
    NEC PA242w (24 inch)
    Screen Resolution
    1920 x 1200
    Hard Drives
    5 Samsung SSD drives: 2X 970 NVME (512 & 1TB), 3X EVO SATA (2X 2TB, 1X 1TB)
    PSU
    EVGA Super Nova I000 G2 (1000 watt)
    Case
    Cooler Master H500M
    Cooling
    Corsair H115i RGB Platinum
    Keyboard
    Logitech Craft
    Mouse
    Logitech MX Master 3
    Internet Speed
    500mb Download. 11mb Upload
    Browser
    Microsoft Edge Chromium
    Antivirus
    Windows Security
    Other Info
    System used for gaming, photography, music, school.
  • Operating System
    Win 10 Pro 22H2 (build 19045.2130)
    Computer type
    PC/Desktop
    Manufacturer/Model
    Custom Built
    CPU
    Intel i7-7700K
    Motherboard
    Gigabyte GA-Z270X-GAMING 8
    Memory
    32G (4x8) DDR4 Corsair Dominator Platinum (3333Mhz)
    Graphics card(s)
    AMD Radeon R9 Fury
    Sound Card
    Onboard (Creative Sound Blaster certified ZxRi)
    Monitor(s) Displays
    Dell U2415 (24 inch)
    Screen Resolution
    1920 x 1200
    Hard Drives
    3 Samsung SSD drives: 1x 512gig 950 NVMe drive (OS drive), 1 x 512gig 850 Pro, 1x 256gig 840 Pro.
    PSU
    EVGA Super Nova 1000 P2 (1000 watt)
    Case
    Phantek Enthoo Luxe
    Cooling
    Corsair H100i
    Mouse
    Logitech MX Master
    Keyboard
    Logitech MK 710
    Internet Speed
    100MB
    Browser
    Edge Chromium
    Antivirus
    Windows Security
    Other Info
    This is my backup system.
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