VeraCrypt 1.26.29 BSOD "SYSTEM_THREAD_EXCEPTION_NOT_HANDLED (0x7E)"

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Assessment

Difficulty
4/5
Estimated time
3-5 days
Newbie friendliness
45/100
Issue type
Bug
Clarity
Mostly clear
Activity status
Active
Tech stack
c

Research direction

The report names VeraCrypt 1.26.29, Windows 11 IoT Enterprise 25H2, and a Movespeed 4 TB SSD, but no source files or tests. Start by reproducing the BSOD while opening the encrypted drive and collecting diagnostic details; compare behavior across the affected drive and the other drives mentioned. Done means identifying a reproducible cause and verifying a fix prevents the crash.

Written by the indexing model from the issue text.

Description

bug

I am experiencing a recurring issue when trying to open a fully encrypted drive. It is a 4 TB Movespeed SSD (model YSSDHB-4TN7000).

Until last month, I would turn on the computer and immediately open the drive to start working. This September, however, whenever I do this, the computer triggers a BSOD.

As shown in the following image: https://imgur.com/biJ1qNL

What I don't understand is that I have other drives encrypted in the same way (NVMe SSDs and HDDs), yet this problem seems to occur only with this specific drive. In fact, one of the other NVMe SSDs is also a Movespeed model.

I used the Hiren’s BootCD tool on a USB drive on the same computer and attempted to decrypt it; it worked fine.

It might be due to a Windows update from the last few months. I can't say for sure.

Windows 11 IoT Enterprise 25H2 26200.6550
VeraCrypt 1.26.29
If you need more details, please let me know.

Note: It does happen with the other drives sometimes, but very rarely.

Dominant language
C
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