In the context of the installer, when run on a system with no internet connection, there is no settings server to contact.
Yes the installer says it has no internet, but the network connection is only used to suggest the correct locale based on geo location from your public ip address.
The only thing that resembles a settings server, would be the xfce settings service but that would only be an issue if the ISO image was incomplete. From somewhere in the thread I saw a mention that the ISO was check-summed and found to be OK.
This leaves the USB media containing the ISO.
I believe I saw a guide on the forum to verify if the image written to ISO matches the checksum of the downloaded file - a doubled check.
A completely different option is to use the Manjaro get-iso script (is available from the repo with manjaro-get-iso package. Or you can run it on any other system with Python (Applications / Manjaro Get Iso · GitLab)
If I recall correct - the script will first verify the signature then copy the ISO to the destination e.g. a mounted USB and after the copy it will use sha256 to verify if the ISO was copied correct.
When run it produce an output similar to this
$ get-iso xfce
==> Storage dir: /run/media/fh/Ventoy
==> Working dir: /tmp/tmpmkp4ebuf
-> Processing xfce ISO
--> Required space on tmpfs: 4223 MiB
--> Required space on storage: 4223 MiB
--> Download: manjaro-xfce-26.0-minimal-260104-linux618.iso.sha256
--> Download: manjaro-xfce-26.0-minimal-260104-linux618.iso
--> Download: manjaro-xfce-26.0-minimal-260104-linux618.iso.sig
-> Wait for signature verification to complete...
--> Signature verified.
--> Moved 'manjaro-xfce-26.0-minimal-260104-linux618.iso.sha256' to '/run/media/fh/Ventoy'
--> Moved 'manjaro-xfce-26.0-minimal-260104-linux618.iso.sig' to '/run/media/fh/Ventoy'
--> Moved 'manjaro-xfce-26.0-minimal-260104-linux618.iso' to '/run/media/fh/Ventoy'
-> Wait for checksum to complete...
--> Checksum verified. manjaro-xfce-26.0-minimal-260104-linux618.iso: OK
-> Cleaning up...
==> ISO file: manjaro-xfce-26.0-minimal-260104-linux618.iso
==> Storage : /run/media/fh/Ventoy
If a failure occur during download the download is discarded
$ get-iso xfce -f
==> Storage dir: /run/media/fh/Ventoy
==> Working dir: /tmp/tmpw30iqntn
-> Processing xfce ISO
--> Required space on tmpfs: 5123 MiB
--> Required space on storage: 5123 MiB
--> Download: manjaro-xfce-26.0-260104-linux618.iso.sha256
--> Download: manjaro-xfce-26.0-260104-linux618.iso
<###> Network Error: HTTPSConnectionPool(host='download.manjaro.org', port=443): Read timed out.
--> Download: manjaro-xfce-26.0-260104-linux618.iso.sig
<###> Download failed... cleanup up and exit!
Retry the download
$ get-iso xfce -f
==> Storage dir: /run/media/fh/Ventoy
==> Working dir: /tmp/tmpkvwf__hd
-> Processing xfce ISO
--> Required space on tmpfs: 5123 MiB
--> Required space on storage: 5123 MiB
--> Download: manjaro-xfce-26.0-260104-linux618.iso.sha256
--> Download: manjaro-xfce-26.0-260104-linux618.iso
--> Download: manjaro-xfce-26.0-260104-linux618.iso.sig
-> Wait for signature verification to complete...
--> Signature verified.
--> Moved 'manjaro-xfce-26.0-260104-linux618.iso.sha256' to '/run/media/fh/Ventoy'
--> Moved 'manjaro-xfce-26.0-260104-linux618.iso.sig' to '/run/media/fh/Ventoy'
--> Moved 'manjaro-xfce-26.0-260104-linux618.iso' to '/run/media/fh/Ventoy'
-> Wait for checksum to complete...
--> Checksum verified. manjaro-xfce-26.0-260104-linux618.iso: OK
-> Cleaning up...
==> ISO file: manjaro-xfce-26.0-260104-linux618.iso
==> Storage : /run/media/fh/Ventoy
This is strange, I just downloaded the official minimal xfce ISO, with no issues, and just a few days ago I tested another issue, claiming the same failure to boot the latest ISO.
I will download the full ISO as well and test it - I usually use an older Clevo N141WU to test - it is not as old as your systems - but it will tell me if it boots or not - and I will be using Ventoy as my boot medium.
ADDENDUM:
Depending on the system you are using - you may need to either use the eject button in the file manager or execute sync command to ensure all data is flushed to the device before removing it. In any case wait until the command completes before detaching the device.
Since some time all Manjaro systems comes with the package udev-usb-sync. The sole purpose of this package is to detect when removable device is attached and adjust cache and buffer to match the device expected write speed as close as possible. The presence of the script will ensure that data is flushed almost immediately to the device.
EDIT 2026-01-15T15:32:00Z
I have now tested both ISO on the mentioned Clevo N141WU. Both ISO start as expected from a Ventoy formatted removable device.
Test system short info/specification
System:
Host: manjaro Kernel: 6.18.3-2-MANJARO arch: x86_64 bits: 64 compiler: gcc
v: 15.2.1
Desktop: Xfce v: 4.20.1 tk: Gtk v: 3.24.51 wm: xfwm4 dm: LightDM
Distro: Manjaro base: Arch Linux
CPU:
Info: quad core model: Intel Core i7-8550U bits: 64 type: MT MCP
arch: Coffee Lake rev: A cache: L1: 256 KiB L2: 1024 KiB L3: 8 MiB
Speed (MHz): avg: 400 min/max: 400/4000 cores: 1: 400 2: 400 3: 400 4: 400
5: 400 6: 400 7: 400 8: 400 bogomips: 31999
Flags-basic: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
Device-1: Intel UHD Graphics 620 vendor: CLEVO/KAPOK driver: i915 v: kernel
arch: Gen-9.5 ports: active: eDP-1 empty: DP-1,HDMI-A-1,HDMI-A-2
bus-ID: 00:02.0 chip-ID: 8086:5917
Device-2: Chicony USB2.0 Camera driver: uvcvideo type: USB rev: 2.0
speed: 480 Mb/s lanes: 1 bus-ID: 1-4:2 chip-ID: 04f2:b649
Display: x11 server: X.org v: 1.21.1.21 compositor: xfwm4 v: 4.20.0
driver: X: loaded: modesetting alternate: fbdev,vesa dri: iris gpu: i915
display-ID: :0.0 screens: 1
Screen-1: 0 s-res: 1920x1080
Monitor-1: eDP-1 model: AU Optronics 0x403d res: 1920x1080 hz: 60 dpi: 158
diag: 354mm (13.9")
API: EGL v: 1.5 platforms: device: 0 drv: iris device: 1 drv: swrast gbm:
drv: iris surfaceless: drv: iris x11: drv: iris inactive: wayland
API: OpenGL v: 4.6 compat-v: 4.5 vendor: intel mesa v: 25.3.2-arch1.1
glx-v: 1.4 direct-render: yes renderer: Mesa Intel UHD Graphics 620 (KBL
GT2) device-ID: 8086:5917
Info: Tools: api: eglinfo,glxinfo de: xfce4-display-settings
x11: xprop,xrandr
This does not imply anything but the fact that I cannot reproduce the issue.
I realise the fact that you both have issues with the XFCE ISO on your systems, but I have no idea what may cause it - none, what-so-ever.