Solved Wrong association for .dat files


kapriss

kapriss

Member
Local time
11:41 AM
Posts
37
Location
Paris
OS
Windows 11 Pro 25H2
Hello,
I just noticed that the .dat files have been associated with Corel WP !

.dat files wrong association.webp

I guess I should fix it, but have no idea how :(
Please help !
 
Windows Build/Version
Windows 11 Pro 25H2

My Computers

System One System Two

  • OS
    Windows 11 Pro 25H2
    Computer type
    PC/Desktop
    CPU
    Intel(R) Core(TM) i5-14600K (3.50 GHz)
    Motherboard
    MSI B760M GAMING PLUS WIFI
    Memory
    16.0 GB (15.7 GB usable)
    Screen Resolution
    1920 x 1080
    Hard Drives
    SDD Kingston NV3 - 2 To
    Seagate BarraCuda - 4 To - 256 Mo
    PSU
    Fox Spirit HG 650
    Case
    Fractal Design Node 804 Black Window
    Cooling
    be quiet! Pure Rock 3 Black
    Keyboard
    azerty
    Browser
    Chrome
  • Operating System
    Windows 11 Pro Version 24H2
    Computer type
    Laptop
    Manufacturer/Model
    THINKPAD-7HMUUS84
    CPU
    Intel(R) Core(TM) i5-10400H CPU @ 2.60GHz (2.59 GHz)
    Screen Resolution
    3840 X 2160
Hello, :alien:

You can use option 2 in the tutorial below to clear and reset your "User choice" default app for .dat files.

www.elevenforum.com

Reset and Restore Default Apps for File Types in Windows 11

This tutorial will show you how to reset and restore the default app association of a file type for your account in Windows 10 and Windows 11. A default app is the program that Windows has assigned to open a file or link type with by default when you open it. Default apps you choose will only...
www.elevenforum.com www.elevenforum.com
 

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
kapriss said:
Hello,
I just noticed that the .dat files have been associated with Corel WP !

View attachment 151673

I guess I should fix it, but have no idea how :(
Please help !
Click to expand...
Hey Kapriss,
A .dat file can be anything compiled, a video, a driver, and others.
I even have mine to open in notepad.
What do you want the file to open with?

Screenshot 2025-11-05 184251.webp
 

My Computers

System One System Two

  • OS
    All Branches but Release
    Computer type
    Laptop
    Manufacturer/Model
    Acer Nitro ANV15-51
    CPU
    AMD Ryzen 7 7735HS 3200-4500 Mhz 8 cores x 2
    Motherboard
    Sportage_RBH
    Memory
    32 GB DDR5
    Graphics Card(s)
    Radeon Graphic / NVIDIA GeForce RTX 4060 8 GB GDDR6
    Sound Card
    AMD/Realtek(R) Audio
    Monitor(s) Displays
    Integrated Monitor (15.3"vis)
    Screen Resolution
    FHD 1920X1080 16:9 144Hz
    Hard Drives
    KINGSTON OM8SEP4512Q-AA 1TB
    Western Digital 256GB
    PSU
    19V DC 6.32 A 120 W
    Cooling
    Dual Fans
    Mouse
    MS Bluetooth
    Internet Speed
    Fiber 1GB Cox -us & 1GB Orange-fr
    Browser
    Edge Canary- Firefox Nightly-Chrome Dev-Chrome Dev
    Antivirus
    Windows Defender
  • Operating System
    Windows 11 Beta
    Computer type
    Laptop
    Manufacturer/Model
    Asus X751BP
    CPU
    AMD A9-9420
    Memory
    8 GB of DDR4
    Graphics card(s)
    AMD Radeon R5
    Screen Resolution
    1600x900
    Hard Drives
    Seagate 1 TB
@Brink
@OAT
Thanks to both of you.
I never actually need to open these files, I shall select text file too, WP looks weird to me !
 

My Computers

System One System Two

  • OS
    Windows 11 Pro 25H2
    Computer type
    PC/Desktop
    CPU
    Intel(R) Core(TM) i5-14600K (3.50 GHz)
    Motherboard
    MSI B760M GAMING PLUS WIFI
    Memory
    16.0 GB (15.7 GB usable)
    Screen Resolution
    1920 x 1080
    Hard Drives
    SDD Kingston NV3 - 2 To
    Seagate BarraCuda - 4 To - 256 Mo
    PSU
    Fox Spirit HG 650
    Case
    Fractal Design Node 804 Black Window
    Cooling
    be quiet! Pure Rock 3 Black
    Keyboard
    azerty
    Browser
    Chrome
  • Operating System
    Windows 11 Pro Version 24H2
    Computer type
    Laptop
    Manufacturer/Model
    THINKPAD-7HMUUS84
    CPU
    Intel(R) Core(TM) i5-10400H CPU @ 2.60GHz (2.59 GHz)
    Screen Resolution
    3840 X 2160
  • Like
Reactions: OAT
Glad we could help. :shawn:
 

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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