Q: What is the issue?
Running the ChemDraw activation script on certain Windows 11 25H2 systems may trigger a BSOD with:
“Bug Check 0x20001 – HYPERVISOR_ERROR"
Q: Which systems are affected?
Confirmed on:
- Fresh Windows 11 25H2 installations
- OS Build: 26200.8514
- HP EliteBook Series 8 G1i
Q: Which systems are not affected?
- In-place upgrades from Windows 11 23H2 to 25H2
- Systems with existing ChemDraw activations
Q: What is the root cause?
The issue appears to be related to Windows 11 25H2 (Build 26200.8514) and Hypervisor/VBS components, not ChemDraw itself.
Q: What is the recommended fix?
Install:
- 2026-06 Security Update (KB5094126)
- Updated OS Build: 26200.8655
- Release Date: June 9, 2026
Q: How do I apply the fix?
Install KB5094126 via Windows Update or deploy a newer Windows 11 image that includes the update.
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