The11thHour - 2024-04-15

OS: Windows 11 Professional 22H2
VeraCrypt-Version: 1.26.7 (latest stable)

Hello,

as soon as I try to start an encryption of the main OS partition (C:) of my newly bought Lenovo laptop (1 week old, fresh installation, did not install anything else before) by selecting the menu entry, I get this error message:

"The system partition/drive does not appear to be encrypted (neither partially nor fully)."
(screenshot attached)

The Windows 11 system has no online accounts (doing the Shift+F10 trick in setup), and BitLocker is disabled. I also disabled FastBoot (as recommended by the VeraCrypt installer), and SecureBoot in BIOS.

I can not even reach the "encryption test" mode. VeryCrypt seems to be completely blocked, and not able to encrypt my system partition.
What could possibly cause this? Anyone else having this problem? Is there any solution?
Thank You and greetings... :-)