Opened 10 years ago
Closed 8 years ago
#13068 closed defect (obsolete)
Windows 8.1 DWM crash and black screen (0x8898009b)
| Reported by: | Vic Lee | Owned by: | |
|---|---|---|---|
| Component: | VMM | Version: | VirtualBox 4.3.12 |
| Keywords: | Cc: | ||
| Guest type: | Windows | Host type: | Windows |
Description
Steps to reproduce:
- Host running Windows 8.1 or 2012r2 with all updates
- Guest running Windows 8.1 (fresh install) with all updates
- Guest set to use 2 vCPUs
- Boot and login to desktop in the guest
- Mount/unmount an iso file repeatedly from the GUI "Devices" menu
When performing step 5 DWM will crash several times and then the screen is completely black. The only way to restore is VM hard reset. The event viewer shows several such DWM error logs:
The Desktop Window Manager has encountered a fatal error (0x8898009b)
Log Name: Application
Source: Desktop Window Manager
Event ID: 9020
Please also note that it won't happen when using only 1 vCPU; and I actually found a workaround by changing the system boot argument:
bcdedit /set useplatformclock true
The issue seems to a CPU clock issue, and should has nothing to with the iso mounting itself. The iso mounting just somehow trigger the bug.
Attachments (1)
Change History (3)
by , 10 years ago
| Attachment: | VBox.log.1 added |
|---|
comment:1 by , 10 years ago
comment:2 by , 8 years ago
| Resolution: | → obsolete |
|---|---|
| Status: | new → closed |
Please reopen if still relevant with a recent VirtualBox release.


Maybe related ticket: #13088