Win10 UEFI PreBoot-Auth fails always

[MalteHillmann]

Hello!

I've just setup a new PC with Windows 10 1709 x64 and tried to do a full system encryption. In Windows everything works fine. Also VeraCrypt changes keyboard layout to QWERTY. After reboot it boots correctly the VeraCrypt UEFI-Boot-loader which asks for password and PIM. I entered the same password as before (tried that password multiple times, including removing and adding system encryption).
The boot-loader shows always an authentication failure.

Can you help me with this issue? Is there any debug mode for the test boot-loader? It does not show any errors.

Thank you very much.

Kind regards

[AlexeiScherbakov]

1. SecureBoot enabled?
2. Is public key added to UEFI BIOS? (https://github.com/veracrypt/VeraCrypt-DCS/tree/master/SecureBoot)

[MalteHillmann]

@AlexeiScherbakov

1. Yes SecureBoot is enabled
2. I've tried it again with manually added keys, but the problem persisted.

So i tried to use some very easy password like "abc". Its working.
I tried another password like "abcABC". Its NOT working.
Some tests later I found the problem:
If i type: [a][b][c][shift][a][b][c] (while holding down shift) it does NOT work. But when I type: [a][b][c][shift][a][shift][b][shift][c] it succeeds!

I think you might have a problem with the recognition of the shift key?

Kind regards

[jgoggan]

@michaeljgray How are 264 (where someone has the Veracrypt bootloader installed, but has trouble with a SHIFT KEY) and 269 (where no one can install Veracrypt at all because it won't pass the pre-test and never EVER even ASKS for a password) duplicates of each other? They don't even seem close to the same thing!

[ghost]

@jgoggan they’re not related. I commented on the wrong one by accident :(

Thanks for pointing it out!

[idrassi]

VeraCrypt bootloader doesn’t handle the shift key for reading capital letters. This is done by the machine’s BIOS. VeraCrypt bootoader receives the characters typed from the BIOS.
So the issue is on the BIOS side and not VeraCrypt especially that using shift key to type capital letters is know to work on our side and also other users.

Is it possible to know your BIOS/motherboard model? Are you using external keyboard? This will help record this in incompatibility list.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[MalteHillmann]

Is it possible to know your BIOS/motherboard model? Are you using external keyboard? This will help record this in incompatibility list.

The board is an "GIGABYTE AORUS GA-AX370-Gaming K7".
I found out, that the problem is gone when using USB keyboard instead of PS/2.