certificate ubuntu 22 about multios-usb

[foxhacker0000]

i did all works like document i dont know why this error

[Mexit]

Hi,

With SB disabled, there is no need to install certificates - everything should work.
Turn off SB and check again please.

[foxhacker0000]

i disabled SB (secure boot) not work

[Mexit]

Check the downloaded image is correct, and the new version of Ubuntu 23.04.
Upload some screenshots of the errors

[foxhacker0000]

error image screenshot

[JonnyTech]

https://askubuntu.com/questions/1456460/verification-failed-0x1a-security-violation-while-installing-ubuntu

Please make sure that you fully disable Secure Boot - and try a newer download from Ubuntu.

[foxhacker0000]

i did it sir not work

[Mexit]

error image screenshot

If you see such a message it means that SB is still active.

When disabling SB in the bios, remember to save the settings.

[foxhacker0000]

i disabled secure boot and saved
same error again

motherboard:
z270p-d3

[Mexit]

Did you manage to get it working?