Beware: Win 11 Setup Allows Creation of Invalid System Name

hsehestedt

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Just noticed that the GUI during Windows installation allows you to create an invalid system name. The ability to name the system during setup is new and apparently not fully debugged yet. Supposedly an underscore is invalid in a system name, but I was able to create a name such as "Win11_VM1". Note that after setup, you can rename it to something else and then an underscore will not be accepted.

Just thought I would mention it in case anyone names a system with an underscore and then has difficulties. Have not verified but my guess is that maybe names with underscores are not valid when trying to access a machine over the network.
 

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  • Operating System
    Windows 11 21H2
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    Intel i7-11700K
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    Windows 11 21H2
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    Laptop
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    HP Spectre x360 15-BL012DX
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    Intel i7-7500U
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    32GB
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    RAM Upgraded from 16GB to 32GB WiFi Upgraded from WiFi 5 to WiFi 6 SSD upgraded from 512GB NVMe SSD to 1TB Seagate FireCuda 510 NVMe SSD

Bree

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Supposedly an underscore is invalid in a system name, but I was able to create a name such as "Win11_VM1"
The use of an underscore is perfectly valid in a NetBIOS name, but is not a valid DNS name. So it is allowed in a computer's name, but MS recommend not to use it.

I had an underscore in one of my PC's names for years, first set when it was running W7 and carried over into its W10 upgrade (changed to a '-' now). Didn't cause any problems on my local network, but then I never tried to access it remotely from the web.

Microsoft said:
NetBIOS computer names can contain all alphanumeric characters except for the extended characters that are listed in Disallowed characters. Names can contain a period, but names can't start with a period....
...DNS names can contain only alphabetical characters (A-Z), numeric characters (0-9), the minus sign (-), and the period (.). Period characters are allowed only when they are used to delimit the components of domain style names....
....Avoid the use of underscores (_) in domain names. Applications might be very RFC obedient and reject the name, and will not install or work in your domain.....

And how did I end up with a non-standard name? Well you are allowed to (with a warning) in Windows 7/8/10/11 if you do it through the Control Panel.

1632061750470.png
 
Last edited:

My Computers

System One System Two

  • Operating System
    Windows 11 Home
    Computer type
    Laptop
    Manufacturer/Model
    Acer Aspire 3 A315-23
    CPU
    AMD Athlon Silver 3050U
    Memory
    8GB
    Graphics Card(s)
    Radeon Graphics
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    laptop screen
    Screen Resolution
    1366x768 native resolution, up to 2560x1440 with Radeon Virtual Super Resolution
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    1TB HDD
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    Edge, Firefox
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    fully 'Windows 11 ready' laptop. Windows 10 C: partition migrated from my old unsupported 'main machine' then upgraded to 11. Now 11 has been released it has been re-imaged back to 10 and awaits the upgrade to be offered in Windows Update.


    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.
  • Operating System
    Windows 11 Pro
    Computer type
    Laptop
    Manufacturer/Model
    Dell Lattitude E4310
    CPU
    i5 M 520
    Motherboard
    0T6M8G
    Memory
    4GB
    Screen Resolution
    1366x768
    Hard Drives
    500GB HDD
    Browser
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    unsupported machine: Legacy bios, MBR, TPM 1.2, upgraded from W10 to W11 using W10/W11 hybrid install media workaround.


    My SYSTEM THREE is a Dell Latitude 5410, i7-10610U, 32GB RAM, 512GB ssd, Windows 11 Pro.

hsehestedt

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Thanks, Bree. It just would be nice if they were consistent in their application of rules.
 

My Computers

System One System Two

  • Operating System
    Windows 11 21H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Intel i7-11700K
    Motherboard
    ASUS Prime Z590-A
    Memory
    128GB Crucial Ballistix 3200MHz DRAM
    Graphics Card(s)
    No GPU - CPU graphics only (for now)
    Sound Card
    Realtek (on motherboard)
    Monitor(s) Displays
    HP Envy 32
    Screen Resolution
    2560 x 1440
    Hard Drives
    1 x 1TB NVMe Gen 4 x 4 SSD
    1 x 2TB NVMe Gen 3 x 4 SSD
    2 x 512GB 2.5" SSDs
    2 x 8TB HD
    PSU
    Corsair HX850i
    Case
    Corsair iCue 5000X RGB
    Cooling
    Noctua NH-D15 chromax.black cooler + 10 case fans
    Keyboard
    CODE backlit mechanical keyboard
    Mouse
    Logitech MX Master 3
    Internet Speed
    300Mb down / 20Mb up
    Browser
    Chromium Edge
    Antivirus
    Windows Defender
    Other Info
    Additional options installed:
    WiFi 6E PCIe adapter
    ASUS ThunderboltEX 4 PCIe adapter
  • Operating System
    Windows 11 21H2
    Computer type
    Laptop
    Manufacturer/Model
    HP Spectre x360 15-BL012DX
    CPU
    Intel i7-7500U
    Memory
    32GB
    Graphics card(s)
    Dual Intel HD 620 and Nvidia GeForce 940MX
    Sound Card
    Built-in Realtek HD Audio
    Monitor(s) Displays
    4k 15-inch
    Screen Resolution
    4k (3840 x 2160)
    Hard Drives
    1TB Seagate FireCuda 510 NVMe SSD
    Internet Speed
    300Mb down / 20Mb up
    Browser
    Chromium Edge
    Antivirus
    Windows Defender
    Other Info
    RAM Upgraded from 16GB to 32GB WiFi Upgraded from WiFi 5 to WiFi 6 SSD upgraded from 512GB NVMe SSD to 1TB Seagate FireCuda 510 NVMe SSD

johnlgalt

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Thanks, Bree. It just would be nice if they were consistent in their application of rules.

:lmao: :lmao: :lmao: :lmao: :lmao:

Wait, a minute, wait a minute, let me catch my breath.

Whoo, OK.

You *do* realize what you just asked for and whom you asked it of, right?

:lmao: :lmao: :lmao: :lmao: :lmao:

Oh, gosh. I needed that. I quite literally fell out of my chair upon reading that.
 

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
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    2 * Lenovo LT2323pwA Widescreeen
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    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
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    2 * Seagate Barracuda 7200.12 ST31000528AS 1TB 7200 RPM --> RAID1
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    PC Power & Cooling’s Silencer Series 1050 Watt, 80 Plus Platinum
    Case
    Fractal Design Define 7 XL Dark ATX Full Tower Case
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    Windows 10 x64 Pro build 21H1
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    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
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    Defender + MB4

Stigg

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    Windows 10 Pro
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    Stigg's Build
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    Intel Core i9-10900X
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    GIGABYTE X299X DESIGNARE 10G
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    Corsair 64 GB (4 x 16 GB) CMW64GX4M4C3000C15 Vengeance RGB Pro 3000Mhz DDR4
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    Realtek ALC1220
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    Samsung 27" FHD LED FreeSync Gaming Monitor (LS27F350FHEXXY)
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    1920 x 1080
    Hard Drives
    Samsung 970 Pro Series 1TB M.2 2280 NVMe SSD
    Western Digital Red Pro WD8003FFBX-68B9AN0 8 TB, 7200 RPM, SATA-III
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    Corsair HX1200 1200W 80 Plus Platinum
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    Fractal Design Define 7 Black Solid Case
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    Noctua NH-D15 Chromax Black
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    Razer Ornata V2
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    Razer DeathAdder Essential
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    FTTN 100Mbps / 40Mbps
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    Mozilla Firefox
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    N/A
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    Logitech BRIO 4k Ultra HD USB-C Webcam
  • Operating System
    Windows 10 Pro
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    Laptop
    Manufacturer/Model
    ASUS ROG Zephyrus M GM501GS
    CPU
    Core i7-8750H
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    Zephyrus M GM501GS
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    SK Hynix 32 GB (2 x 16 GB) HMA82GS6CJR8N-VK 16 GB DDR4-2666 DDR4 SDRAM
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    NVIDIA GeForce GTX 1070
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    Realtek ALC294
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    AU Optronics B156HAN07.1 [15.6" LCD]
    Screen Resolution
    1920 x 1080
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    Samsung MZVKW512HMJP-00000 512 GB, PCI-E 3.0 x4
    Samsung SSD 860 QVO 4TB 4 TB, SATA-III
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    N/A
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    N/A
    Cooling
    N/A
    Mouse
    Razer DeathAdder Essential
    Keyboard
    PC/AT Enhanced PS2 Keyboard (101/102-Key)
    Internet Speed
    FTTN 100Mbps / 40Mbps
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    Mozilla Firefox
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    N/A
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    USB2.0 HD UVC Webcam

johnlgalt

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I can't control what I read that others post - because I don't know what part is gonna trigger another laughing attack....

Although, technically, that comment wasn't heavy at all. Maybe I need to ease up on (reading) the flippant commentary? :ROFLMAO:
 

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
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    Defender + MB4

hsehestedt

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Maybe my expectations are too high. For example, how many years should I expect it to take to transfer over all the Control Panel bits so we have one consistent place to go for everything?

I know, you can stop laughing now.
 

My Computers

System One System Two

  • Operating System
    Windows 11 21H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Home Built
    CPU
    Intel i7-11700K
    Motherboard
    ASUS Prime Z590-A
    Memory
    128GB Crucial Ballistix 3200MHz DRAM
    Graphics Card(s)
    No GPU - CPU graphics only (for now)
    Sound Card
    Realtek (on motherboard)
    Monitor(s) Displays
    HP Envy 32
    Screen Resolution
    2560 x 1440
    Hard Drives
    1 x 1TB NVMe Gen 4 x 4 SSD
    1 x 2TB NVMe Gen 3 x 4 SSD
    2 x 512GB 2.5" SSDs
    2 x 8TB HD
    PSU
    Corsair HX850i
    Case
    Corsair iCue 5000X RGB
    Cooling
    Noctua NH-D15 chromax.black cooler + 10 case fans
    Keyboard
    CODE backlit mechanical keyboard
    Mouse
    Logitech MX Master 3
    Internet Speed
    300Mb down / 20Mb up
    Browser
    Chromium Edge
    Antivirus
    Windows Defender
    Other Info
    Additional options installed:
    WiFi 6E PCIe adapter
    ASUS ThunderboltEX 4 PCIe adapter
  • Operating System
    Windows 11 21H2
    Computer type
    Laptop
    Manufacturer/Model
    HP Spectre x360 15-BL012DX
    CPU
    Intel i7-7500U
    Memory
    32GB
    Graphics card(s)
    Dual Intel HD 620 and Nvidia GeForce 940MX
    Sound Card
    Built-in Realtek HD Audio
    Monitor(s) Displays
    4k 15-inch
    Screen Resolution
    4k (3840 x 2160)
    Hard Drives
    1TB Seagate FireCuda 510 NVMe SSD
    Internet Speed
    300Mb down / 20Mb up
    Browser
    Chromium Edge
    Antivirus
    Windows Defender
    Other Info
    RAM Upgraded from 16GB to 32GB WiFi Upgraded from WiFi 5 to WiFi 6 SSD upgraded from 512GB NVMe SSD to 1TB Seagate FireCuda 510 NVMe SSD

johnlgalt

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No, I can't. I really can't!

<BREATHE> :lmao:
 

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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