Windows 11 Insider Preview 10.0.22000.132 (co_release) error (0xc1420121)

wshirbeeny

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When installing Windows 11 Insider Preview 10.0.22000.132 August 12 I received an error during installation percent 72%.
error code (0xc1420121).
1628956657879.png After this stage, I recieved following message
1628956780959.png
 

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My Computer

System One

  • Operating System
    windows 10
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    Gigabyte
    CPU
    INTEL i7 10700K
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    Gigabyte Z490 vision D
    Memory
    G-SKILL TRIDENTZ 32GB 2600MHz
    Graphics Card(s)
    NVIDIA RTX 2070 SUPER FOUNDERS EDITION
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    REALTEK
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    LENOVO Q27h-10
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    2560 X 1440
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    SAMSUNG EVO PLUS m.2 1T
    PSU
    NZXT C650
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    Thermaltake Core P3 ATX Tempered Glass CA-1G4-00M6WN-05,Snow
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    be quiet! SHADOW ROCK SLIM Silent Wings CPU Cooler - 160W TDP
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BunnyJ

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My Computer

System One

  • Operating System
    Windows 11 Home
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    PC/Desktop
    Manufacturer/Model
    Banna Junior 7K - X Series
    CPU
    Ryzen 7 2700X
    Motherboard
    Asus Crosshair VII Hero, X470
    Memory
    Gskill 32GB, 16GBX2 PC3000
    Graphics Card(s)
    GeForce GTX TITAN X 12GB
    Sound Card
    Realtek (R) Audio
    Monitor(s) Displays
    Viotek 32" Curved, ViewSonic 27"
    Screen Resolution
    1080P
    Hard Drives
    Primary Samsung 256 SSD
    PSU
    EVGA BQ 700w 80+ Bronze
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    NZXT 510
    Cooling
    Stock AMD cooler
    Keyboard
    Corsair
    Mouse
    Amazon Generic with Cord
    Internet Speed
    Download: 240.78 mbps Upload: 12.02 mbps Ping: 15ms
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    Firefox and Edge
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    Defender

johnlgalt

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Hi, @wshirbeeny, and Welcome to the 11 forum!

First and foremost, before anything else - how much free space is on your storage for C:\?
 

My Computers

System One System Two

  • Operating System
    Windows 10 Pro X64
    Computer type
    PC/Desktop
    Manufacturer/Model
    HomeBrew
    CPU
    AMD Ryzen 9 3950X
    Motherboard
    MSI MEG X570 GODLIKE
    Memory
    4 * Corsair Vengeance 32 GB 3600 MHz
    Graphics Card(s)
    eVGA GeForce GTX 970 SSC ACX 2.0 (04G-P4-3979-KB)
    Sound Card
    Realtek® ALC1220 Codec
    Monitor(s) Displays
    2 * Lenovo LT2323pwA Widescreeen
    Screen Resolution
    2* 1920*1080
    Hard Drives
    3x Sabrent Rocket PCIe Gen4 NVMe M.2 1 TB SSD (SB-ROCKET-NVMe4-1TB)
    SanDisk Ultra SDSSDHII-960G-G25 960 GB SATA III SSD
    Crucial MX100 CT256MX100SSD1 256GB SATA III SSD
    2 * Seagate Barracuda 7200.12 ST31000528AS 1TB 7200 RPM --> RAID1
    PSU
    PC Power & Cooling’s Silencer Series 1050 Watt, 80 Plus Platinum
    Case
    Fractal Design Define 7 XL Dark ATX Full Tower Case
  • Operating System
    Windows 10 x64 Pro build 21H1
    Computer type
    Laptop
    Manufacturer/Model
    Dell Latitude E5470
    CPU
    Intel(R) Core(TM) i5-6300U CPU @ 2.40GHz, 2501 Mhz, 2 Core(s), 4 Logical Processor(s)
    Motherboard
    Dell
    Memory
    16 GB
    Graphics card(s)
    Intel(R) HD Graphics 520
    Sound Card
    Intel(R) HD Graphics 520 + RealTek Audio
    Monitor(s) Displays
    Dell laptop display 15"
    Screen Resolution
    1920 * 1080
    Hard Drives
    Toshiba 128GB M.2 22300 drive
    INTEL Cherryvill 520 Series SSDSC2CW180A 180 GB SATA III SSD
    PSU
    Dell
    Case
    Dell
    Cooling
    Dell
    Mouse
    Logitech MX Master (shared) | Dell TouchPad
    Keyboard
    Dell
    Internet Speed
    AT&T LightSpeed Gigabit Duplex
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    Edge Chromium | Chrome | Firefox Nightly | Brave
    Antivirus
    Defender + MB4

wshirbeeny

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1628957291269.png535 GB free
 

My Computer

System One

  • Operating System
    windows 10
    Computer type
    PC/Desktop
    Manufacturer/Model
    Gigabyte
    CPU
    INTEL i7 10700K
    Motherboard
    Gigabyte Z490 vision D
    Memory
    G-SKILL TRIDENTZ 32GB 2600MHz
    Graphics Card(s)
    NVIDIA RTX 2070 SUPER FOUNDERS EDITION
    Sound Card
    REALTEK
    Monitor(s) Displays
    LENOVO Q27h-10
    Screen Resolution
    2560 X 1440
    Hard Drives
    SAMSUNG EVO PLUS m.2 1T
    PSU
    NZXT C650
    Case
    Thermaltake Core P3 ATX Tempered Glass CA-1G4-00M6WN-05,Snow
    Cooling
    be quiet! SHADOW ROCK SLIM Silent Wings CPU Cooler - 160W TDP
    Keyboard
    Logitech MX keys
    Mouse
    Logitech MX master 3
    Internet Speed
    160 Mbps
    Browser
    Microsoft edge
    Antivirus
    Norton 360

johnlgalt

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Cool Definitely not a space thing, which is one of the causes for this error message.

In searching online, I see this post: Error Code 0xc1420121 Couldn’t Install Windows 10 Feature Update

Though it says Windows 10, it applies to Win11, as the error message is the same.

have you tried any troubles shooting on your own? If so, any of those listed stesp (don't download anything they offer to download on their page, just follow the steps in the Basic Toubleshooting section (the mini menu at the top is clickable to take you there directly).
 

My Computers

System One System Two

  • Operating System
    Windows 10 Pro X64
    Computer type
    PC/Desktop
    Manufacturer/Model
    HomeBrew
    CPU
    AMD Ryzen 9 3950X
    Motherboard
    MSI MEG X570 GODLIKE
    Memory
    4 * Corsair Vengeance 32 GB 3600 MHz
    Graphics Card(s)
    eVGA GeForce GTX 970 SSC ACX 2.0 (04G-P4-3979-KB)
    Sound Card
    Realtek® ALC1220 Codec
    Monitor(s) Displays
    2 * Lenovo LT2323pwA Widescreeen
    Screen Resolution
    2* 1920*1080
    Hard Drives
    3x Sabrent Rocket PCIe Gen4 NVMe M.2 1 TB SSD (SB-ROCKET-NVMe4-1TB)
    SanDisk Ultra SDSSDHII-960G-G25 960 GB SATA III SSD
    Crucial MX100 CT256MX100SSD1 256GB SATA III SSD
    2 * Seagate Barracuda 7200.12 ST31000528AS 1TB 7200 RPM --> RAID1
    PSU
    PC Power & Cooling’s Silencer Series 1050 Watt, 80 Plus Platinum
    Case
    Fractal Design Define 7 XL Dark ATX Full Tower Case
  • Operating System
    Windows 10 x64 Pro build 21H1
    Computer type
    Laptop
    Manufacturer/Model
    Dell Latitude E5470
    CPU
    Intel(R) Core(TM) i5-6300U CPU @ 2.40GHz, 2501 Mhz, 2 Core(s), 4 Logical Processor(s)
    Motherboard
    Dell
    Memory
    16 GB
    Graphics card(s)
    Intel(R) HD Graphics 520
    Sound Card
    Intel(R) HD Graphics 520 + RealTek Audio
    Monitor(s) Displays
    Dell laptop display 15"
    Screen Resolution
    1920 * 1080
    Hard Drives
    Toshiba 128GB M.2 22300 drive
    INTEL Cherryvill 520 Series SSDSC2CW180A 180 GB SATA III SSD
    PSU
    Dell
    Case
    Dell
    Cooling
    Dell
    Mouse
    Logitech MX Master (shared) | Dell TouchPad
    Keyboard
    Dell
    Internet Speed
    AT&T LightSpeed Gigabit Duplex
    Browser
    Edge Chromium | Chrome | Firefox Nightly | Brave
    Antivirus
    Defender + MB4
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